TM-11-5895-224-15

TM-11-5895-224-15
TM 11-5895-224-15
DEPARTMENT
OF
THE
ARMY
TECHNICAL
MANUAL
O P E R A T O R ’ S , ORGANIZATIONAL, FIELD
A N D D E P O T MAINTENANCE
MANUAL
OPERATIONS CENTRAL AN/MSC-32
b
This copy is a reprint which includes current
pages
HEADQUARTERS,
from
Changes
5
through
DEPARTMENT
15
MAY
9.
OF
1961
THE
ARMY
WARNING
HIGH VOLTAGE
is used in
this equipment.
DEATH ON CONTACT
may result if safety precautions
are not observed.
EXTREMELY
DANGEROUS POTENTIALS
EXIST IN THE FOLLOWING UNITS:
Power and signal entrance box
Power distribution panel
Teletypewriter TT-4 (*) /TG
Reperforator-Transmitter,
Teletypewriter TT-76 (*)/GGC
Terminal, Telegraph TH-5/TG
Intercommunication Station
LS-147 (*) /FI
115
115
115
115
volts
volts
volts
volts
ac
ac
ac
dc
560 volts dc
270 volts dc
WARNING
VENTILATION IS ESSENTIAL
To prevent asphyxiation, Operations Central AN/MSC-32 must be ventilated at all
times when occupied.
DON'T TAKE CHANCES !
CHAPTER 2
INSTALLATION A N D PREOPERATIONAL PROCEDURES
Section I.
INSTALLATION, CONNECTION, AND TESTING OF
INSTALLED EQUIPMENT
9. General
a. When an AN/MSC-32 is received, uncrate and check it ( para 10) ; then perform
the tests given in paragraph 17. When an
S-184/MSC-32 is received, perform the procedures outlined in ( 1 ) through (4) below.
(1) Uncrate and check the equipment
(para 10).
(2) Install and interconnect the following
equipment:
(a) SB-22(*)/PT (para 11).
(b) TA-312/PT (para 12).
(c) TH-5/TG’s (para 13).
(d) TT-76(*)/GGC (para 14).
(e) TT4 (*)/TG’s (para 15.
(3) Store the TA-125/GT ( para 16a)
and the J-1077A/U (para 16b);
check the LS-147 ( *) /FI connections
(para 16c).
(4) Check the equipment (para 17).
b. The signal duct contains all the wiring
required to connect the equipment to the external line circuits. All wiring is appropriately marked and prepared for connection. The
signal schematic-wiring diagram (fig. 42) SUP
plements the information given in the connection procedures. The power duct contains
power receptacles appropriately marked for
each piece of equipment that requires ac
power.
c. A tool kit (para 5b and fig. 2) is used
for equipment installation and connection.
Note. Ground (para 20) and connect the power (para
21) to the shelter before using the lights or the convenience receptacles.
1 o. Uncrating and Checking
a. Uncrating Shelter (fig. 22).
(1) Remove the panels of the crate by re20
moving the bolts. First remove the
front and rear panels; then remove
the top and side panels.
(2) Remove the four lag screws that
secure the base of the crate to the
shelter.
(3) Remove the sling assembly (fig. 26)
from its package on the floor of the
shelter (fig. 15).
(4) Use a device capable of lifting 3,000
pounds to remove the shelter from
the base of the crate. Attach the
sling assembly to the lifting eyes on
the top corners of the shelter (par:
19a) and raise the shelter off tht
base of the crate.
(5) Remove the base of the crate and
lower the shelter.
(6) Remove the sling assembly from the
shelter and the lifting device.
b. Checking Shelter Contents. Check the
the contents of the shelter against the packing
list. If the packing list is not available, use
the table of components ( para 5) to check the
equipment that probably was packed.
II. Installation and Connection of
SB-22(*)/PT
a. Remove the front cover of the SB–
22 (*) /PT (TM 11–5805–262–12) .
b. Remove headset-handset (H-81/U or H144/U) from the front cover and store the
cover.
c. Open the rear cover of tile SB–22 ( * ) /PT
and install four Batteries BA–30 in the battery
case.
Figure 12.1. Operations Central AN/MSC-32, roadside
wall, elevation drawing (Modified Shelter).
17
Figure 15. Operations Central AN/MSC-32 floor plan
(Modified Shelter).
19
Figure 43. Modification of TT-76/GGC and TT-4/TG No. 1
cabling-schematic diagram.
25
Changes in force: C5, C6, C7, C8 and C9
TM 11-5895-224-15
CHANGE
HEADQUARTERS,
DEPARTMENT OF THE ARMY
WASHINGTON, DC 10 August 1983
No. 9
OPERATOR’S, ORGANIZATIONAL, DIRECT
SUPPORT, GENERAL SUPPORT,
AND DEPOT MAINTENANCE MANUAL
INCLUDING REPAIR PARTS AND
SPECIAL TOOLS LISTS
OPERATIONS CENTRAL AN/MSC-32
(NSN 5895-00-021-2090)
TM 11-5895-244-15, 15 May 1961, is changed as follows:
Page 3. Paragraph 1.1, change paragraph heading to:
Consolidatd Index of Army Publications and Blank
Forms. In first sentence change “310-4” to “310-1”.
Page 3. Paragraph 2.1 is Superseded as follows:
2.1 Reporting Errors and Recommending
can help improve this manual. If you find any mistakes
you know of a way to improve the procedures, please
let us know. Mail your letter or DA Form 2028 (Recommended Changes to Publications and Blank Forms) direct
to: Commander, US Army Communications-Electronics
Command and Fort Monmouth, ATTN: DRSEL-ME-MP,
Fort Monmouth, New Jersey 07703.
part of the sling assembly) above the center
support on the cargo bed side rail of the truck.
(2) Use the hook at the end farthest from the turnbuckle and hook each of the sling assemblies
to a tiedown eye of the shelter.
(3) Secure the sling hooks to the tiedown ring
(B, fig. 26).
(4) Follow the procedures given in (1) through
(3) above to secure the other side of the shelter.
(5) Tighten all turnbuckles evenly by hand; then
turn each turnbuckle an additional one-half
turn with a bar or rod inserted in the turnbuckle slot.
Page 3. Paragraph 2-4 is superseded as follows:
2.4 Reporting Equipment Improvement Recommendations (EIR)
If your Operations Central AN/MSC-32 needs improvement, let us know. Send us an EIR. You, the user, are the
only one who can tell us what you don’t like about your
equipment. Let us know why you don’t like the design.
Put it on an SF 368 (Quality Deficiency Report). Mail it
to Commander, US Army Communications-Electronics
Command and Fort Monmouth, ATTN: DRSEL-ME-MP,
Fort Monmouth, New Jersey 07703. We’ll send you a
reply.
Page 29. Paragraph 19. Delete subparagraph b and
substitute:
b. Securing AN/MSC-32 on Truck (fig. 26).
(1) Install the tiedown ring assembly (A, fig. 26)
CAUTION
Do not overtighten the turnbuckles.
(6) Raise and secure the truck tailgate.
Delete figure 26 and substitute the new figure 26.
Page 39. Change the title of “Section I” to OPERATOR’S AND
ORGANIZATIONAL PREVENTIVE
MAINTENANCE.
Page 39. Paragraph 30. Delete paragraph 30 and substitute:
30. General
NOTE
Refer to TM 750-244-2 for proper procedures
for destruction of this equipment to prevent
enemy use.
a. Operator/crew preventive maintenance is the systematic care, servicing and inspection of equipment to pre-
* This change supersedes TM 11-5895-224 ESC, 16 Jun 75 and C3, 11 July 63.
1
C9, TM 11-5895-224-15
Figure 26. Tiedown ring assembly and sling assembly connection diagram, exploded view
vent the occurrence of trouble, to reduce downtime, and to
maintain equipment in serviceable condition. To be sure
that your operations central is always ready for your mission, you must do scheduled preventive maintenance
checks and services (PMCS).
(1) BEFORE OPERATION, perfom your B PMCS
to be sure that your equipment is ready to go.
(2) When an item of equipment is reinstalled after
removal, for any reason, perform the necessary B PMCS to
be sure the item meets the readiness reporting criteria.
(3) Use the ITEM NO. column in the PMCS table
to get the number to be used in the TM ITEM NO. column
on DA Form 2404 (Equipment Inspection and Maintenance
Worksheet) when you fill out the form.
b. Organizational preventive maintenance procedures are
designed to help maintain equipment in serviceable condition. They include items to be checked and how to check
them. These checks and services, described in paragraph 33,
2
outline inspections that are to be made at specific monthly
(M) intervals.
c. Routine checks like CLEANING, LUBRICATION,
DUSTING, WASHING, CHECKING FOR FRAYED
CABLES, STOWING ITEMS NOT IN USE, COVERING
UNUSED RECEPTACLES, CHECKING FOR LOOSE
NUTS AND BOLTS AND CHECKING FOR COMPLETENESS are not listed as PMCS checks. They are things that
you should do any time you see they must be done. If you
find a routine check like one of those listed in your PMCS,
it is because other operators reported problems with this
item.
NOTE
When you are doing any PMCS or routine checks,
keep in mind the warnings and cautions.
WARNINGS
Never operate the generator or shelter until it
has been properly grounded. Electrical defect
C9, TM 11-5895-224-15
in the load lines or equipment can cause death
by electrocution when contact is made with
an ungrounded system.
Adequate ventilation should be provided while
using TRICHLOROTRIFLUOROETHANE. Prolonged breathing of vapor should be avoided.
The solvent should not be used near heat or open
flame; the products of decomposition are toxic
and irritating. Since TRICHLOROTRIFLUOROETHANE dissolves natural oils, prolonged contact
with skin should be avoided. When necessary, use
gloves which the solvent cannot penetrate. If the
solvent is taken internally, consult a physician
immediately.
Compressed air is dangerous and can cause serious
bodily harm if protective means or methods are
not observed to prevent a chip or particle (of
whatever size) from being blown into the eyes or
unbroken skin of the operator or other personnel.
Goggles must be worn at all times while cleaning
with compressed air. Compressed air shall not be
used for cleaning purposes except where reduced
to less than 29 pounds per square inch gage (psig)
and then only with effective chip guarding and
personnel protective equipment. Do not use
compressed air to dry parts when trichlorotrifluoroethane has been used.
NOTES
The PROCEDURES column in your PMCS charts
B - Before
Interval
Item
No.
B
Item to be
Inspected
instruct how to perform the required checks and
services. Carefully follow these instructions and,
if tools are needed or the chart so instructs, get
organizational maintenance to do the necessary
work.
If your equipment must be in operation all the
time, check those items that can be checked and
serviced without disturbing operation. Make the
complete checks and services when the equipment can be shut down.
d. Deficiencies that cannot be corrected must be reported to higher category maintenance personnel. Records
and reports of preventive maintenance must be made in
accordance with procedures given in TM 38-750.
Page 39. Paragraphs 31 and 32. Delete paragraphs 31 and
32 and substitute:
31. Operator/Crew Preventive Maintenance Checks
and Services
Perform before operation PMCS if you are operating the
item for the first time.
NOTE
The checks in the interval column are to be performed in the order listed.
32. Operator/Crew Preventive Maintenance Checks
and Service Chart
M - Monthly
Procedures: Check for and have
repaired or adjusted
as necessary
Equipment is
Not Ready/Available
if:
1
Completeness
Check for completeness.
Major operating component is
missing.
2
Exhaust Blowers
Check operation.
One or more blowers inoperative.
3
Manual Telephone
Switchboard
SB-22/PT,
SB-22A/PT
Perform operational checks as described
in TM 11-5805-262-12.
Switchboard inoperative or four
or more linepacks inoperative.
4
Teletypewriter (two)
TT-4A/TG,
TT-4B/TG
Perform operational checks as described
in TM 11-5815-206-12.
Teletypewriters cannot
communicate.
5
Teletypewriter
ReperforatorTransmitter
Perform operational checks as described
in TM 11-2225.
Fails to feed tape or tears tape.
*Do this check before each deployment to a mission location. This will permit any existing problems to be corrected before
the mission starts. The check does not need to be done again until redeployment.
3
C9, TM 11- 5895-224-15
B - Before
M – Monthly
TM 11-5805-201-12.
TM 11-5805-246-10.
*Do this check before each deployment to a mission location. This will permit any existing problems to be corrected before
the mission starts. The check does not need to be done again until redeployment.
Page 40. Paragraph 33. Delete paragraph 33 and substitute.
33. Organizational Preventive Maintenance Checks
and Services Chart
TM 11-5805-246-20.
TB 43-0125
Page 52. Paragraph 54b, line 4. Delete “Patch Wet, Shelter, Electrical Equipment,” and substitute: Repair Kit, Electrical
Equipment Shelter MK-680/G.
Page 57. Delete Section II.
Page 58. Appendix I. Delete appendix I and substitute:
APPENDIX I
REFERENCES
The following references are applicable for the operator and repair technician of Operations Central AN/MSC-32:
DA Pam 310-1
Consolidated Index of Army Publications and Blank Forms.
SB 11-6
Primary Battery Supply Data.
SB 11-573
Painting and Preservation Supplies Available for Field Use for Electronics
Command Equipment.
TB 11-6625-666-50
Inspection Requirements for Repaired Electrical Indicating Instruments.
4
TM 11-5895-244-15
TB 43-0118
TB 11-6625-666-50
TB 43-0124
Field Instructions for Painting and Preserving Electronics Command Equipment Including Camouflage Pattern Painting of Electrical Equipment Shelters.
Inspection Requirements for Repaired Electrical Indicating Instruments.
Maintenance and Repair Procedure for Shelters, Electrical Equipment S-141/(G and
S-141B/G (NSN 5410-00-752-9698), S-144G, S-144A/G, S-144B/G, S-144C/G and
S-144D/G (5410-00-542-2532), S-250/G (5410-00-999-4935), S-250/G (Shielded)
(5410-00-489-6076), S-280/G (5410-00-999-5269), S-280A/G (5410-00-999-6022),
S-280B/G (5410-00-117-2868), S-280B/G (Shielded) (5410-00-001-4093) and
S-280C/G, S-318/G (5410-00-763-2339) and S-318A/G (5410-00-116-7086).
TM 11-2138
Terminal Box TA-125/GT; Telephone Repeating Coil Assembly TA-145/GT; Maintenance Kit MX-842/GT; and Switchboard Signal TA-123/GT.
TM 11-5410-206-14P
Operator’s, Organizational, Direct Support and General Support Maintenance Repair
Parts and Special Tools List (Including Depot Maintenance Repair Parts and Special
Tools): Shelters, Electrical Equipment, S-141/G and S-141B/G.
TM 11-5805-201-12
Operator and Organizational Maintenance Manual: Telephone Set TA-312/PT (NSN
5805-00-543-0012).
TM 11-5805-201-20P
Organizational Maintenance Repair Parts and Special Tool Lists: Telephone Set TA312/PT (NSN 5805-00-543-0012).
TM 11-5805-201-35
Direct Support, General Support, and Depot Maintenance Manual Including Repair
Parts and Special Tool Lists: Telephone Set TA-312/PT (NSN 5805-00-543-0012).
TM 11-5805-201-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools) for Telephone Set
TA-312/PT (NSN 5805-00-543-0012).
TM 11-5805-246-10
Operator’s Manual: Terminal, Telegraph TH-5/TG.
TM 11-5805-246-20
Organizational Maintenance Manual: Terminal, Telegraph TH-5/TG.
TM 11-5805-246-20P
Organizational Maintenance Repair Parts and Special Tools Lists: Terminals, Telegraph TH-5/TG (FSN 5805-246-8734) and TH-5A/TG (5805-020-5720).
TM 11-5805-246-35
Direct Support, General Support, and Depot Maintenance Manual: Terminal, Telegraph TH-5/TG.
TM 11-5805-246-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools Lists): Terminals,
Telegraph, TH-5/TG (FSN 5805-246-8734) and TH-5A/TG (5805-020-5720).
TM 11-5805-262-12
Operator’s and Organizational Maintenance Manual: Switchboards, Telephone,
Manual SB-22/PT (NSN-5805-00-257-3602) and SB-22A/PT (5805-00-715-6171)
and Adapter, Tone Signaling, TA-977/PT (5805-01-040-9653).
TM 11-5805-262-20P
Organizational Maintenance Repair Parts and Special Tool Lists: Switchboards, Telephone, Manual SB-22/PT (NSN 5805-00-257-3602) and SB-22A/PT (5805-00-7156171).
Direct Support, General Support, and Depot Maintenance Manual: Switchboards,
Telephone, Manual SB-22/PT (NSN 5805-00-257-3602) and SB-22A/PT (5805-00715-6171).
TM 11-5805-262-35
Change
9
5
TM 11-5895-244-15
TM 11-5805-262-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools
Lists (Including Depot Maintenance Repair Parts and Special Tools) for Switchboards, Telephone, Manual SB-22/PT (NSN 5805-00-257-3602) and SB-22A/PT
(5805-00-715-6171).
TM 11-5805-354-24P
Organizational, Direct Support and General Support Maintenance (Repair and Special
Tools): Terminal Box, TA-125/GT (FSN 5805-538-0777).
TM 11-5810-221-12P
Operator’s and Organizational Maintenance Repair Parts and Special Tools Lists Including Maintenance Allocation Chart: Communications Security Equipment
TSEC/KW-7, TSEC/KW-7 with KWX-10/TSEC (NSN 5810-00-998-5760).
TM 11-5810-221-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools List
(Including Depot Maintenance Repair Parts and Tools) for Communications Security Equipment, TSEC/KY-8 (NSN 5810-00-007-7951).
TM 11-5815-206-ESC
Equipment Serviceability Criteria: Teletypewriter Set AN/PGC-1 and Teletypewriters
TT-4A/TG, TT-4B/TG, TT-4C/TG, and TT-335/TG.
TM 11-5815-206-12
Operator’s and Organizational Maintenance Manual for Teletypewriter Sets, AN/
PGC-1 and AN/PGC-3 and Teletypewriters TT-4A/TG, TT-4B/TG, TT-4C/TG,
TT-335/TG, TT-537/TG, TT-698/TG, TT-698A/TG, TT-698B/TG, TT-722/TG
and TT-722A/TG.
TM 11-5815-206-20P
Organizational Maintenance Repair Parts and Special Tools List for Teletypewriter
Sets, AN/PGC-1 (NSN 5815-00-198-5963), AN/PGC-3 (5815-01-012-8773)
Teletypewriters, TT-4A/TG, TT-4B/TG, and TT-4C/TG (5815-00-198-4438), TT335/TG (5815-00-878-8449), TT-537/TG)5815-00-926-7378), TT-698/TG, TT698A/TG, TT-698B/TG, (5815-01-008-9628) and TT-722/TG, TT-722A/TG (581501-017-9172).
TM 11-5815-206-34
Direct Support and General Support Maintenance Manual: Teletypewriter Sets AN/
PGC-1 (NSN 5815-00-198-5963), AN/PGC-3 (5815-00-012-8773), and Teletypewriters TT-4A/TG, TT-4B/TG, TT-4C/TG (5815-00-198-4438), TT-335/TG (581500-878-8449), TT-537/G (5815-00-926-7378), TT-698/TG, TT-698A/TG, TT698B/TG (5815-01-008-9628) TT-722/TG, TT-722A/TG (5815-01-017-9172).
TM 11-5815-206-34P-1
Direct Support and General Support Maintenance Repair Parts and Special Tools List
(Including Depot Maintenance Repair Parts and Special Tools) for Teletypewriter
Sets, AN/PGC-l (NSN 5815-00-198-5963), AN/PGC-3 (5815-01-012-8773); Teletypewriters, TT-4A/TG, TT-4B/TG, TT-4C/TG (5815-00-198-4438), TT-698/TG,
TT-698A/TG, TT-698B/TG (5815-01-008-9628) and TT-722/TG, TT-722A/TG
(5815-01-017-9172).
TM 11-5815-206-34P-2
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools) for Teletypewriter
TT-335/TG (NSN 5815-00-878-8449).
TM 11-5815-238-12
Operator’s and Organizational Maintenance Manual: Teletypewriter Sets, AN/GGC-3
(NSN 5815-00-503-3309), AN/GGC-3A (5815-00-581-9751), AN/GGC-53 (5815-01012-8772) and AN/GGC-53A (5815-01-017-0956) and Teletypewriter Reperforator.
Transmitters, TT-76/GGC (5815-00-503-2760), TT-76A/GGC, TT-76B/GGC, TT76C/GGC (5815-00-553-6061), TT-699/GGC (5815-01-012-8446), TT-699A/GGC
TT-699B/GGC and TT-699C/GGC (5815-01-017-9166).
6
Change 9
TM 11-5895-224-15
TM 11-5815-238-35
Direct Support, General Support, and Depot Maintenance Manual: Teletypewriter Sets,
AN/GGC-3 (NSN 5815-00-503-3309), AN/GGC-3A (5815-00-581-9751),
AN/GGC-53 (5815-01-012-8772) and AN/GGC-53A (5815-01-017-0956) and Teletypewriter Reperforator-Transmitters, TT-76/GGC (5815-00-503-2760), TT76A/GGC, TT-76B/GGC, and TT-76C/GGC (5815-00-553-6061), TT-699/GGC
(5815-01-012-8446), TT-699A/GGC, TT-699B/GGC, and TT-699C/GGC (5815-01017-9166).
TM 11-5815-238-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools): Teletypewriter Sets
AN/GGC-3 (NSN 5815-00-503-3309), AN/GGC-3A (5815-00-581-9751),
AN/GGC-53 (5815-00-012-8772), and AN/GGC-53A (5815-01-017-0956) and Teletypewriter Reperforator-Transmitters TT-76/GGC (5815-00-503-2760), TT76A/GGC (5815-00-553-6061), TT-76B/GGC (5815-00-553-6061), TT-76C/GGC
(5815-00-503-2760), TT-699/GGC (5815-01-012-8446), TT-699A/GGC (5815-01017-9166), TT-699B/GGC (5815-01-017-9166) and TT-699C/GGC (5815-01-0179166).
TM 11-5830-221-12
Operator’s and Organizational Maintenance Manual: Intercommunication Stations
LS-147A/FI, LS-147B/FI, LS-147C/FI, and LS-147D/FI (NSN 5830-00-752-5357).
TM 11-5830-221-24P
Organizational, Direct Support, and General Support Maintenance Repair Parts and
Special Tools Lists for Telecommunication Station LS-147C/FI (NSN 5830-00-7525357).
TM 11-5830-221-35
Field and Depot Maintenance Manual: Intercommunication Stations LS-147A/FI,
LS-147B/FI, LS-147C/FI, and LS-147D/FI.
TM 11-5965-206-14P
Operator’s, Organizational, Direct Support and General Support Maintenance Repair
Parts and Special Tools Lists (Including Depot Maintenance Repair Parts and
Special Tools), Headset Microphone H-91A/U (FSN 5965-669-6871), Handset
Headset H-144/U, H-144A/U, H-144B/U and H-144C/U (FSN 5965-682-2769) and
Headset-Microphone H-210/G (FSN 5965-892-1068).
TM 11-5965-224-14P
Operator’s, Organizational, Direct Support and General Support Maintenance Repair
Parts and Special Tools List (Including Depot Maintenance Repair Parts and Special
Tools) Handsets, H-60/PT (FSN 5965-669-9145) and H-165/U (5965-543-1837).
TM 11-5965-271-50
Depot Maintenance Manual: Handsets TS-9-(*), TS-10-(*), TS-11-(*), TS-12-F,
TS-13-(*), TS-14-(*), TS-15-(*), H-22-B/U, H23-(*/U), and H-60/PT.
TM 11-6105-200-50
Depot Maintenance Manual for Fractional Horsepower Motors.
TM 11-6110-201-12P
Operator’s and Organizational Maintenance Repair Parts and Special Tools Lists for
Distribution Boxes J-1077/U and J-1077A/U (NSN 6110-00-985-7574).
TM 11-6110-201-34P
Direct Support and General Support Maintenance Repair Parts and Special Tools Lists
(Including Depot Maintenance Repair Parts and Special Tools) for Distribution
Boxes J-1077/U and J-1077A/U (NSN 6110-00-985-7574).
7
C9, TM 11-5895-224-15
TM 11-6625-203-12
Operator’s and Organizational Maintenance Manual: Multimeter AN/URM-105 and
AN/URM-105C (Including Multimeter ME-77/U and ME-77C/U).
TM 38-750
The Army Maintenance Management System (TAMMS).
TM 43-0139
Painting Instructions for Field Use.
TM 740-90-1
Admininstrative Storage of Equipment.
TM 750-244-2
Procedures for Destruction of Electronics Material to prevent Enemy Use.
8
By Order of the Secretary of the Army:
JOHN A. WICKHAM, JR.
General, United States Army
Chief of Staff
Official:
ROBERT M. JOYCE
Major General, United States Army
The Adjutant General
DISTRIBUTION:
To be distributed in accordance with Special List.
TM 11-5895-224-15
HEADQUARTERS,
DEPARTMENT OF THE ARMY
WASHINGTON 25, D. C., 15 May 1961
TECHNICAL MANUAL
No. 11-5895-224-15
OPERATIONS CENTRAL AN/MSC-32
Paragraph
C HAPTER
C
1.
I.
II.
General
--------------------------------------------------------------------Description and data --------------------------------------------------------
HAPTER
2.
INSTALLATION AND PREOPERATIONAL PROCEDURES
I.
II.
III.
CHAPTER 3.
C
Installation, connection, and testing of installed equipment ------------------Preoperational procedures - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Signal connections
OPERATING
INSTRUCTIONS
--------------------------------------------
1,2
3-8
3
3-19
9-17
18-21
22, 23
20-27
27-31
31, 32
24-29
33-38
HAPTER
4.
MAINTENANCE INSTRUCTIONS
Section
I.
II.
Operator’s maintenance ------------------------------------------------------ 30-45
Organizational, field, and depot maintenance --------------------------------- 46-54
39-44
44-53
THEORY
55,56
54, 55
56
57
C HAPTER
C
INTRODUCTION
Section
Section
Page
5.
------------------------------------------------------------------
HAPTER
6.
SHIPMENT AND LIMITED STORAGE AND DEMOLITION
TO PREVENT ENEMY USE
Section
I.
II.
Shipment and limited storage - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 57.58
Demolition of materiel to prevent enemy use -------------------------------- 59,60
APPENDIX I.
II.
III.
Index
REFERENCES
MAINTENANCE
BASIC
ISSUE
-------------------------------------------------------------------ALLOCATION
ITEMS
LIST
58-61
--------------------------------------------------
62-67
-----------------------------------------------------
60-72
73-75
1
CHAPTER 1
INTRODUCTION
Section I.
I. Scope
a. This manual describes Operations Central
AN/MSC-32 and covers its installation, operation, theory, and maintenance. It also includes
imtructions for installing components not provided as part of Shelter, Electrical Equipment
S-184/MSC-32 (fig. 5). Except for the shelter and its components, major components of
the AN/MSC-32 are covered in detail in their
respective manuals (appx I).
b. Official nomenclature followed by (*) is
used to indicate all models of the equipment
covered in this manual. Thus, Switchboard,
Telephone, Manual SB-22(*)/PT represents
Switchboards, Telephone, Manual SB-22/PT
and SB-22A/PT; Reperforator-Transmitter,
Teletypewriter TT-76(*)/GGC represents Reperforator-Transmitters, Teletypewriter TT76/GGC, TT-76A/GGC, and TT/76B/GGC;
Intercommunication Station LS-147(*)/FI
represents Intercommunication Stations LS147A/FI, LS-147B/FI, LS-147C/FI, and LS147D/FI; Teletypewriter TT-4(*)/TG represents Teletypewriters TT-4A/TG and TT4B/TG.
2. Forms and Records
a. Unsatisfactory Equipment Report. Fill
out and forward DA Form 468 (Unsatisfac-
GENERAL
tory Equipment Report) on DD Form 787-1
(Electronic Equipment Report--Signal Equipment) to the Commanding Officer, U. S. Army
Signal Materiel Support Agency, ATTN:
SIGMS-ML, Fort Monmouth, N. J., as prescribed in AR 700-38 (for DA Form 468) and
in AR 700-39 (For DD Form 787-1).
b. Report of Damaged or Improper Shipment. Fill out and forward DD Form 6 (Report of Damaged or Improper Shipment), as
prescribed in AR 700-58.
c. Preventive Maintenance Forms. Prepare
preventive maintenance forms for the major
components of Operations Central AN/MSC32, as specified in their respective technical
manuals (appx I).
d. Parts List Form. Forward DA Form
2028 (Recommended Changes to DA Technical
Manual Parts Lists or Supply Manual 7, 8, or
9) direct to the Commanding Officer, U. S.
Army Signal Materiel Support Agency,
ATTN: SIGMS-ML, Fort Monmouth, N. J.,
with comments on parts listings in appendixes
II and III.
e. Comments on Manual. Forward all other
comments on this publication direct to the
Commanding Officer, U. S. Army Signal Materiel Support Agency, ATTN: SIGMS-PA2d
Fort Monmouth, N. J.
Section II. DESCRIPTION AND DATA
3. Purpose and Use
Operations Central AN/MSC-32 (para 5) is
an air- or vehicular-transportable field communication operations office. The AN/MSC-32
contains telephone switchboard, teletypewriter,
and local telephone circuits (fig. 1). Display
board facilities required by the signal operations officer to plan, engineer, and control an
area-type communication system are provided.
The AN/MSC-32 is normally used with Operations Center, Communications AN/MSC-81 at
corps and army signal centers.
3
Figure 1.
C’enttra[ .1 ,Y/.WSC-SI,
4.
Power requirements . . . . . . ...115 vac, 60 cps,
1-phase,
3-wire.
Power consumption (max):
Lights . . . . . . . . . . . . . . . . . . . .310 w.
Exhaust blowers. . . . . .. . . . . 300 w.
Electric heaters . . . .3,000 w.
Equipment:
Terminals, Telegraph
TH-5/TG (3) . . 180 w.
Teletypewriters TT4(*)/TG (2) . . . . . . . . . 320 w.
Reperforator-Transmitter, Teletypewriter
TT-76(*)/GGC. . . . . 150 w.
Intercommunication Station LS-147(*)/FI . . . 32 w.
Total . . . . . . . . . .4,292
4
signal circuiteo block diagram,
Communication facilities:
Telephone
(TA-312/PT) . . 4 circuits.
Switchboard
(SB-22 (*) /PT) . . . . . . . . 12 circuits.
Intercommunication
(LS-147(*)/FI
.
1
circuit.
Teletypewriter
(TT-4 (*) /TG,
TT-76(*)/GGC)
.
3
circuits.
Weight:
AN/MSC-32 . . . . . . . . . ..2,761 lb.
S-184/MSC-32 . . . . . . . . . . . . . . 1,200 lb.
Outside dimensions of shelter:
Length . . . . . . . . . . . . . . . . . . . ..138 in.
Width
.
.
Height
.
.
.
.
.
.
80
..
in.
5. Components
a. Major Components.
Quantity
(es)
Quantil
(es)
Item
Figure
No.
Swit&brd, Telephone, Manual
13
1
Fire extinguisher, 2% lb
11
1
Fire extinguisher, 5 lb
14
1
First aid kit
14
3
Folding chair
15
Grease pencil (5 colors)
11, 12
2
Ground rod
14
2
Ground strap (cabinet No. 1)
2
1
Hand brush
14
1
Hand lantern
14
Hardware (in 5 bags)
2
1
Intercommunication Station I, S147(*)/FI
13, 18
1
[adder assembly
15
1
Line cord (15 ft), with duplex
receptacle (cabinet No. 5)
2
1
Operations board
11
3
Patch cord, black, 2-ft (cabinet
No. 4)
3
3
Patch cord, red, 2 ft (cabinet
No. 4)
3
3
Patch cord, white, 2 ft (cabinet
No. 4)
3
3
Patch cord, green, 2 ft (cabinet
No. 4)
3
3
Patch cord, gray, 2 ft (cabinet
No. 4)
3
1
?atch panel
13
1
?encil sharpener
14
1
?ower cable assembly (100 ft )
with reel
3
?ower cable grip
2
1
‘ower distribution nanel
10, 14
1
ihelter, Electrical Equipment
S-141/G (modifted )
5
lignal cable grip
2
1
ledge hammer
14
1
ledge hammer handle, spare
14
1
ling easembly
15, 26
sB-22(’)/P’l
1
Shelter, Electrical Equipment
%lMms- (b below)
8.
Terminal, Telegraph TI-I-5/TG
13
4
Telephone Set ‘1’A-312/PT
iq storage cabinet)
11
10
(3
Telety~writer TT-4 (* )/TG
1
19
Reperforat -Transmitter, Teletypewriter W-76 (*)/GGC
13
Terminal Box TA-125/GT (in
cabinet No, 11)
12
b. Shelter Components.
Quntity
((MI)
Figure
No.
Item
I
Axe
14
Blackout curtain assembly
14
Cable Assembly, Telephone CX4566/G (25o ft ) with Reel
RC-4W/u
3
Cable stub, SB-22/PT (S-ft)
23
ft)
2
Cable Assembly, Telephone CX4760/IJ (15 ft ) (cabinet No. 6)
2
Chad bin
13
Cl&k, $-day
13
Cnble stub, ~wer
(cabinet No. 6)
(15
Cord, audio, 8 ft
Cushion, foam
7
Desk tray
13, 14
Distribution
Box
—1077A/U
Dr~light
No. 2)
(25
ft)
12
13
13
15
Drain plug wrench
(cabinet
Figure
No.
Item
2
Exhaust blower
13
2
potlight
16
Electric heater
12, 13, 17
1
tntus board
12
5
Quantit
(es)
Figure
Item
No.
—
1
;wi]el chair
12
1
rape basket
12
5
relephone connecting cord, 4 ft
2
2
teletypewriter
black 6 ft
connecting
cord,
2
2
l%letypewriter connecting
red, 6 ft
cord,
2
1
teletypewriter
6
l’iedown strap
2
1
rool roll kit including:
2
patch panel
13
1 bag, with 10 pockets
6. Description of Operations Central
AN/MSC-32
The components of Operations Central AN/
MSC-32 (para 5) are housed in Shelter, Electrical Equipment S-184/MSC-32 (fig. 5). External connections (cable and field wire) are
made either at the binding post signal entrance box or at the power and signal entrance box. Alternating-current (ac) power
for the shelter must be obtained from a nearby
shelter or other local source. Figures 6 and
7 are interior views of the AN/MSC-32; the
location of interior components are shown in
figures 11 through 16. The major components
of the AN/MSC-32 are described in paragraph 7 and the shelter components in paragraph 8.
1 adjustable wrench, 8 in.
1 Allen wrench set
1 Knife TL29
1 lineman’s pliers
1 long-nosed
pliers
1 screwdriver,
2 in.
1 screwdriver,
4 h.
1 screwdriver,
6 in.
1 socket wrench set
1 vise-grip pliers, 7 in.
1
rube pin straightener
14
1
l’ube puller, 7 pins
14
1
rube puller, 9 pins
14
2
Wastebasket
12
1 set
I’ethnical manuals
components (para
for
5)
1 set
Running spares including:
2 fluorescent lamps,
(24 h.) ( f i g . 16)
major
4
20 w
6 fluorescent lamp starters
FS-2 (fig. 16)
8 glowlamps, NE-46 (cabinet No. I )
2 Incandescent lamps, 80 w
(cabinet No. 1)
1
6
POWER INDICATOR
NEON LAMP, NE-34
(cabinet No. 1)
7. Description of Major Components of
AN/MSC-32
a. Shelter, Electrical Equipment S-184/
MSC-32 (fig. 5 and 23). The shelter is a component of the AN/MSC-32 in which all other
components (para 5) are installed. All equipment racks and mountings, ac power receptacles, and signal wiring required for mounting and operating the AN/MSC-32 components are installed in the shelter. Storage
areas and installed mounting fixtures are provided for running spares and accessory items.
The shelter can be transported by helicopter
or truck and is fully insulated, watertight, and
airtight. Two lightweight exhaust blower
vents, equipped with hinged covers and rain
shields (not shown), are on the outside f ront
wall. A two-section door at the rear permits
entrance to the shelter. The upper section of
the door is used when the AN/MSC-32 is
truck-mounted and the tailgate is up.
(1) Lighting. Eight flourescent light fixtures, installed in the ceiling (fig.
16), provide lighting for the shelter.
A nightlight is mounted near the
teletypewriter patch panel (fig. 13).
(2) Entrance boxes. The power and signal entrance box (fig. 8) and the
binding post signal entrance box (fig.
9) are mounted in the exterior wall
of the shelter (fig. 5). Each entrance box cover is equipped with
TM 5895-224-15-16
Figure 2.
7
box (fig. 9) contains 21 pairs of
binding posts for optional use in
connecting signal circuits to the
shelter components. Entrance to
the rear of the binding post signal
entrance box is provided on the
interior rear wall of the shelter
when the signal entrance panel
(fig. 14) is removed.
(3) Power distribution panel (fig. 10).
The power distribution panel contains
metering and control circuits for the
ac distribution circuits.
(4) Power and signal wiring (fig. 11, 12,
and 13). Ac power is distributed
through power ducts to the various
ac power outlets. Signal wiring is
distributed through signal ducts to
the various components.
TM 5895-224-15-2
F i g u r e 3 . Shelter, Electrical Equipment, S-184/MSC-W,
cable a88emb&?8, ree~a, and patch eorda.
folding slide panels (not shown) for
weather protection and secured, with
captive-screw-type fasteners.
(a) The power and signal entrance box
(fig. 8) contains receptacles and
binding posts for connecting ac
power and signal circuits to the
shelter components. It also contains a duplex convenience outlet
receptacle (115V AC) equipped
with a spring-loaded watertight
cover. Entrance to the rear of the
power and signal entrance box is
provided on the interior rear wall
when the power entrance panel
(fig. 14) is removed.
(b) The binding post signal entrance
8
b. Switchboard, Telephone, Manual SB-22
(*)/PT (fig. 13). The SB-22(*)/PT (TM
11-5805-262-12 ) is a local battery telephone
switchboard used to switch 12 telephone or
voice-f requency (vf) teletypewriter circuits.
c. Telephone Set TA-312/PT (fig. 24).
The TA-312/PT’s are used for local telephone
communication. One TA-312/PT (less carrying case) is mounted on the curbside wall
(fig. 11). Three TA-312/PT’s are stored
in a storage cabinet; when required for use,
they are placed on the tabletop (fig. 12 and
13) adjacent to a PHONE jack.
d. Terminal, Telegraph TH-5/TG (fig. 13).
The TH-5/TG’s (TM 11-5805-246-10) are
used to send and receive vf teletypewriter
signals for the teletypewriters (e and f below) .
e. Teletypewriter TT-4(*)/TG (fig. 13).
The TT-4(*)/TG’s (TM 11-5815-206-12) are
used to send (keyboard) and receive (printed
page) dc teletypewriter signals.
f. Reperforator-Transmitter, Teletypewriter
TT-76(*)/GGC (fig. 13). The TT-76(*)/GGC
(TM 11-2225) is used to send (keyboard or
transmitter distributor) and receive (tape)
dc teletypewriter signals.
g. Terminal Box TA-125/GT. The TA125/GT (TM 11-2138) is stored in a storage
cabinet. It is a 24-pair terminal box used to
interconnect field-wire circuits during patching, testing, and monitoring procedures.
Figure 4.
TM 5805-285-15-5
Figure 5.
TM 5895-224-15-11
TM 5895-224-15-3
F i g u r e 6 . 0perni?iou8 Central A N/MSC-.3%’, interior reor view.
8. Description of Shelter Components
a. Electric Heaters (fig. 17). The heaters
are secured in their mounting bases on the
floor of the shelter (fig. 12 and 13). Each
heater contains a 1.5-kilowatt heating element
and a fan for air circulation. Horizontal
louvers on the front of each heater are adjustable to deflect the airstream. Operating controls are on the top of each heater.
b. Intercommunication Station LS-147(*)/
FI ( f i g . 1 8 ) .
The
LS-147(*)/FI
provides
two-way nonprivate communication in a system that consists of other LS-147(*)/FI’s or
equivalent equipment.
c. Exhaust Blowers. Two exhaust blowers
10
(fig. 13) are equipped with removable covers
(not shown) which muffle the sound when the
exhaust blowers are operating. Exhaust vents
to the outside of the shelter are provided.
d. Distribution Box J-1077A/U. The J1077A/U (fig. 13) is a terminal box which
can be used to connect field wires to a 26-pair
cable connector.
e. Clock. An 8-day luminous-dial 24-hour
clock is mounted on the f ront wall (fig. 13).
A knob on the left-hand side is used for winding and setting the clock.
f. Patch Panel (fig. 13 and 19). The patch
panel provides a means of rearranging the
SB-22(*)/PT and the TH-5/TG circuits.
TM 5895-224-15-4
F i g u r e 7 . Opemtbna Central A N/MSC-$%?, interior
f rent
view.
11
Figure 8. Power and +al entranee box.
g. Teletypewriter Patch Panel (fig.
2 0 ) . The teletypewriter patch panel
a means of connecting the cords of
4A(*)/TG’s and the TT-76(*)/GGC
teletypewriter circuits.
13 and
provides
the TTto the
h. TH-5/TG Subdistribution Panel (fig. 12
and 21). The panel distributes and controls
ac power to the TM-5/TG’s.
i. Cords and Cables.
12
(1) Power cable assembly and reel (fig.
The power cable assembly is
3).
wound on a reel, which is secured to
the floor at the front of the shelter
(fig. 7 and 15). It is a 100-foot,
3-conductor cable with a watertight
power connector on each end.
(2) Power cable stub (fig. 2). The power
cable stub is a 15-foot, 3-conductor
F i g u r e 9 . Binding post signal entrance boz.
cable with a watertight power connector one end, and red, white,
and black prepared leads on the other
end.
(3) C a b l e A s s e m b l y , T e l e p h o n e C X 4566/G and Reel RC-485/U (fig. 3).
The CX-4566/G is 250-feet long and
is equipped with a 26-pair cable connector on each end.
(4) C a b l e A s s e m b l y , T e l e p h o n e C X 4760/U (fig. 2). The CX-4760/U is
a 26-pair cable stub that is 15 feet
long and is equipped with a 26-pair
cable connector on one end and prepared leads on the other end.
(5) S B - 2 2 /PT cable stub (fig. 23). The
SB-22/PT cable stub is 3 feet long;
and is equipped with a 26-pin connector on one end and prepared leads
on the other end.
(6) Patch cords (fig. 3). The patch cords
are two-conductor cords, equipped
with telephone plugs at each end.
(7) Telephone and teletypewriter connecting cords (fig. 2). The telephone (4
feet and teletypewriter (6 feet) connecting cords are two-conductor cords
equipped with telephone plugs on one
end and prepare leads on the other
end.
13
14
Figure 10.
TM 5895-223-15-14
Figure 11.
TM5895-224-15-5
Figure 12.
TM5895-224-15-6
Figure 13.
TM5895-224-15-7
Figure 14.
TM5895-224-15-8
Figure 15.
TM5895-224-15-9
Figure 16.
TM5895-224-15-10
Figure 17.
TM5805-285-15-17
Figure 18.
TM5805-285-15-18
17
18
TM5895-224-15-12
Figure 19.
TM5895-224-15-13
Figure 21.
Figure 20.
TM5895-224-15-14
19
CHAPTER 2
INSTALLATION A N D PREOPERATIONAL PROCEDURES
Section I.
INSTALLATION, CONNECTION, AND TESTING OF
INSTALLED EQUIPMENT
9. General
a. When an AN/MSC-32 is received, uncrate and check it ( para 10) ; then perform
the tests given in paragraph 17. When an
S-184/MSC-32 is received, perform the procedures outlined in (1) through (4) below.
(1) Uncrate and check the equipment
(para 10).
(2) Install and interconnect the following
equipment:
(a) SB-22(*)/PT (para 11).
(b) TA-312/PT (para 12).
(c) TH-5/TG’s (para 13).
(d) TT-76(*)/GGC (para 14).
(e) TT4 (*)/TG’s (para 15.
(3) Store the TA-125/GT ( para 16a)
and the J-1077A/U (para 16b);
check the LS-147 ( *) /FI connections
(para 16c).
(4) Check the equipment (para 17).
b. The signal duct contains all the wiring
required to connect the equipment to the external line circuits. All wiring is appropriately marked and prepared for connection. The
signal schematic-wiring diagram (fig. 42) SUP
plements the information given in the connection procedures. The power duct contains
power receptacles appropriately marked for
each piece of equipment that requires ac
power.
c. A tool kit (para 5b and fig. 2) is used
for equipment installation and connection.
Note. Ground (para 20) and connect the power (para
21) to the shelter before using the lights or the convenience receptacles.
1 0. Uncrating and Checking
a. Uncrating Shelter (fig. 22).
(1) Remove the panels of the crate by re20
moving the bolts. First remove the
front and rear panels; then remove
the top and side panels.
(2) Remove the four lag screws that
secure the base of the crate to the
shelter.
(3) Remove the sling assembly (fig. 26)
from its package on the floor of the
shelter (fig. 15).
(4) Use a device capable of lifting 3,000
pounds to remove the shelter from
the base of the crate. Attach the
sling assembly to the lifting eyes on
the top corners of the shelter (par:
19a) and raise the shelter off tht
base of the crate.
(5) Remove the base of the crate and
lower the shelter.
(6) Remove the sling assembly from the
shelter and the lifting device.
b. Checking Shelter Contents. Check the
the contents of the shelter against the packing
list. If the packing list is not available, use
the table of components ( para 5) to check the
equipment that probably was packed.
II. Installation and Connection of
SB-22(*)/PT
a. Remove the front cover of the SB–
22 (*) /PT (TM 11–5805–262–12).
b. Remove headset-handset (H-81/U or H144/U) from the front cover and store the
cover.
c. Open the rear cover of tile SB–22 ( * ) /PT
and install four Batteries BA–30 in the battery
case.
TM 5805-285-15-24
Figure 22. Shelter, Elect&al Equipment S-18~\MflC42B typkal crating dtigram.
d. Remove the cable clamps that hold the
SB-22/PT cable stub in place (fig. 23).
the hole in the SB-22/PT mounting rack until
the connector reaches the hole.
e. Disconnect the connector of the SB-22/PT
cable stub from its receptacle in the signal
duct (fig. 13) and pull the cable up through
f. Place the SB-22(*)/PT on the tabletop
near the prepared leads of the cale stub and
make the following connections.
21
TM 5895-224-15-18
F i g u r e 2 3 . Shelter, Electrical h’qwip,ent S-184/.JIS(!4?, fquipment nt.o unting
22
f acilitiey
Connect a wire to the GRD binding
post on the rear of the SB-22(*)/PT.
Connect the prepared leads from the
SB-22/PT cable stub to the SB22(*)/PT binding posts according to
the following chart:
t3F3-22/PT cable stub
wire
desfmation
1
2
3
4
5
6
7
8
9
10
11
12
Wire
color
Wht-blu, Wht+rn-blu
~t-brn-blu, wht-gy-blu
Wht-grn, wht-orn-grn
Wht-grn-blk, wht-yd-grn
Wbt-brn-grn, wbt-gy-grn
Wht-blu-blk, wht-yd-blu
Wht-brn, wht-grn
Wht-blk, wbt-orn
Wht-brn-gy, wht-brn-vio
Wht-ycl, wht-blu-grn
Wht-rd, wht-gy
~t-blk-rd, wht-orn-red
SB-22(’)/PI?
Binding post
pair
1
2
3
4
.5
6
7
g. Remove the wingnuts that secure the retaining bar in the SB-22(*)/PT mounting
rack (fig. 13), and raise the retaining bar.
h. slide the SB-22(*)/PT into the mounting rack; replace the retaining bar and secure it in place with the wingnuts.
i. Pull the SB-22/PT cable stub and connect the SB-22/PT cable stub connector to
the receptacle in the signal duct (fig. 13).
Replace the cable clamps to hold the SB22/PT cable stub in place.
j. Connect the ground wire (f(1) above) to
a screw in the signal duct.
k. Connect the handset-headset (b above) to
the SB-22(*)/PT and perform the preinstallation checks (TM 11-5805-262-12).
12. Installation and Connection of
TA-312/PT
T O install the TA-312/PT (designated
PHONE 4) in its mounting bracket (fig. 11
and 23), follow the procedures in a below.
When the TA-312/PT’s are to be used at the
status board (fig. 12) or in front of the
shelter (fig. 13), position each TA-312/PT
near the desired PHONE jack and perfom the
procedures in b below.
a. Installation.
(1) Loosen the wingnut on the side of
the mounting bracket.
(2) Rotate the clamping arm upward to
gain access to the flathead screw on
the side of the mounting. Tighten
the wingnut.
(3) Use a screwdriver to remove the
flathead screw that secures the holding plate (inside the mounting
bracket).
(4) Remove the TA-312/PT from its
carrying case; store the case.
(5) Insert the holding plate into the buzzer recess in the side of the TA312/PT.
(6) Place the TA-312PT in the mounting
bracket and replace the flathead
screw.
(7) Install two Batteries BA-30 in the
TA-312/PT and operate the LB-CBCBS switch to LB.
b. Connection.
(1) Connect the prepared leads of a telephone connecting cord (fig. 2) to
the LINE binding posts of the TA312/PT.
Connect PHONE 4 TA-312/PT tele-
TM5805-285-15-25
Figure 24.
23
phone connecting cord
PHONE 4 jack (fig. 11).
plug
to
(3) Connect the other TA-312/PT’s telephone connecting cord plug to
PHONE 1, 2, or 3 jack (fig. 12 and
13) as desired.
13. Installation and Connection of
TH-5/TG
( fig. 13 and 23)
a. Installation.
(1) Remove the TH-5/TG front panel
and chassis assembly from its case
(TM 11-5805-246-10) .
(2) Remove the spare fuses from the
cover assembly and store the fuses in
a storage cabinet.
(3) Turn the TH-5/TG chassis over and
check to see that the bare strap is
connected between terminals D2 and
F2. Connect a strap between the
terminals if none is provided.
(4) Install each TH-5/TG in the TG5/TG equipment rack by lifting the
designation plate on the rack; slide
the TH-5/TG into the rack and
tighten the captive screws to secure
the chassis in position.
b. Connection.
(1) Connect the appropriate wire pair to
the TH-5/TG 2W binding posts according to the following chart:
Sig
———
Lksignation
106
104
206
204
306
304
mire _
_.—
color
Wht-yel-grn
Wht-grn-blk
Wht-gy-grn
Wht-brn-grn
Wht-yel-blk
Wht-blu-b:k
TI -5 I’m
.—.
No.
13indin&
post
1
1
2
2
3
3
6
4(
6
4
6
4
.—
(2) Connect the TH-5/TG power cord
connector into the associated receptacle on the TH-5/TG subdistribution panel (fig. 12 and 21).
24
14. Installation and Connection of
TT-76(*)/GGC
(fig. 13)
a. Remove the wooden shipping base and the
dust cover from the TT-76(*)/GGC (TM
11-2225).
b. Place the TT-76(*)/GGC in position on
the table top. Align the holes in the TT76(*)/GGC base with the holes in the tabletop. Secure the TT-76(*)/GGC in place with
the nuts and bolts provided; attach the nuts
at the underside of the tabletop.
c. Perform the appropriate preinstallation
services, and preparation for starting procedures (TM 11-2225).
Note. Use the TT-76/GGC receptacle and the ad,jacent
ground for power and ground connections (TM 11-2225).
d. Replace the dust cover on the TT-76(*)/
GGC and fasten the web strap across the top
of the dust cover.
e. Insert the TT-76(*)/GGC gray, black,
and red teletypewriter connecting cord plugs
into the TT-76 TD, TT-76 TR, and TT-76
REC jacks, respectively, on the teletypewriter
patch panel (fig. 13 and 20). Set the cords
into the associated cord clip.
15. Installation and Connection of
TT-4(*)/TG’s
(fig. 13)
a. Perform the appropriate service procedures upon receipt of equipment (TM 11-5815206-12) .
b. Remove the wingnuts from the underside of the TT-4(*)/TG tabletop (TT-4(*)/
TG No. 1) or mounting shelf (TT-4(*)/TG
No. 2) and remove the retaining bars.
c. Position the TT-4(*)/TG on the tabletop or mounting shelf. Place the retaining
bars in the packboard lashing hooks on the
TT-4(*)/TG and through the holes in the
tabletop or mounting shelf.
d. Replace and tighten the wingnuts.
e. Perform the appropriate preliminary installation and final installation procedures (TM
11-5815-206-12).
IVo~f. L’se the appropriate TT-4A/TG receptacle and
adjacent ground connections (TM 11-5815-206-12).
t. Use the teletypewriter connecting cords
(fig. 2) and make the connections at the TT-
(*)/TG for full-duplex vf operation (TM
11-5816-206-12).
g. Insert the TT-4(*)/TG black, and red
teletypewriter connecting cord plugs into the
TT-4A/TG (#l or #2, as applicable) SEND
and REC jacks, respectively, on the teletypewriter patch panel (fig. 13 and 20). Set the
cords into the associated cord clip.
16. Installation of TA-125/GT, J-1077A/U,
and Checking LS-147(*)/Fl Connections
a. Installation of TA-125/GT. Place the
TA-125/GT in its mounting bracket in storage
cabinet No. 12 and secure it in place with the
straps provided.
b. Installation of J-1077A/U. Place the
J-1077A/U in its mounting bracket (fig. 13)
and secure it with the straps provided.
c. Checking LS-147(*)/FI Connections.
Check to see that the telephone connecting
cord (fig. 2) is connected to the terminals in
the rear of the LS-147(*)/FI and that the
connecting cord plug is inserted into the INTERCOM jack in the signal duct (fig. 13).
Check to see that the LS-147(*)FI power
cord connector is inserted into the INTERCOM
receptacle.
17. Testing Equipment After Installation
a. Preliminary Procedure.
(1) Ground the shelter (para 20) and
make the power connections (para
21) before using the lights and convenience receptacles. For test purposes, any satisfactory ground may
be used in place of the ground rods
indicated.
(2) Energize the ac circuits (para 26).
~o~~. Refer to paragraph 25 for information covering the S-184/MSGS2 controls and
fnstrurnent.s,
(3) Connect the CX-4760/U connector to
the 26-pair cable receptacle in the
power and signal entrance box (para
23b).
(4) Remove the J-1077A/U from its
mounting (fig. 13) and place it close
to the prepared leads of the CX4760/U.
(5) Refer to figure 39 for color code of
wires identified with each cable pair
in the CX-4760/U. Connect the prepared leads of the CX-4760/U to the
J-1077A/U binding posts, starting
with binding posts pair No. 1 for
CX-4760/U pair 1. For example, connect CX-4760/U pair 1 (wht-blu (A)
and wht-orn-blu (B)) to binding post
pair No. 1 on the J-1077A/U; connect CX-4760/U pair 2 (wht-brnblu (A) and wht-gy-blu (B)) to
binding post pair No. 2 on the J1077A/U, etc.
b. SB-22(*)/PT Circuits.
(1) Remove a TA-312/PT from the storage cabinet.
(2) Use field wire and connect the TA312/PT to binding posts pair No. 1
at the J-1077A/U and perform the
SB-22 (*)/PT talking and ringing
tests (TM 11-5805-262-12).
(3) Patch the LINES SB-22/PT jack
No. 1 at the patch panel (fig. 19) to
PHONE 4 jack. Perform the talking and ringing tests between the
PHONE 4 TA-312/PT (fig. 11) and
the TA-312/PT at the J-1077A/U
((2) above).
(4) Remove the connections to binding
posts pair No. 1 at the J-1077A/U
and connect the TA-312/PT to binding posts pairs No. 2 through 12, in
turn. For each SB-22(*)/PT line,
perform the talking and ringing tests
((2) and (3) above).
c. PHONE 1 Through PHONE 4 Circuits.
(1) Remove a TA-312/PT from the storage cabinet. Connect the prepared
leads of a telephone connecting cord
(fig. 2) to the LINE binding posts
of the TA-312/PT.
(2) Connect the TA-312/PT (b(2)
above) to binding posts pairs No.
22 through 24, at the J-1077A/U in
turn. Connect the TA-312/PT ((1)
above), in turn, to PHONE 1
through PHONE 3 jacks at the signal duct (fig. 12 and 13). Perform
25
the signaling and ringing tests between the TA-312/PT’s.
(3) Connect t h e T A - 3 1 2 / P T ( b ( 2 )
above) to binding posts pair No. 25
at the J-1077A/U and perform the
signaling and ringing tests between
the TA-312/PT and the PHONE 4
TA-312/PT (mounted) (fig. 11).
(4) Disconnect and store the TA-312/
PT’s used at the J-1077A/U and the
PHONE 3 jack.
d. TT-4(*)/TG
cuits.
and
TT-76(*)/GGC
Cir-
(1) TT-4(*)/TG No. 1.
(a) P a t c h L I N E S S P A R E S N o . 1 6
jack to TT-4A/TG No. 1 SEND
No. 10 jack at the patch panel;
patch LINES SPARES No. 17
jack to TT-4A/TG No. 1 REC No.
11 jack at the patch panel.
(b) Use field wire and connect, binding
posts pair No. 16 to No. 17 at the
J-1077A/U.
(c) Operate TT-4(*)/TG No. 1 for
full-duplex operation (TM 115815-206-12). Clear copy should
be received on the page printer.
(d) Remove the patch cords ((a)
and t h e s t r a p
above)
((b)
above).
(2) TT-4(*)/TG No. 2.
(a) P a t c h L I N E S S P A R E S N o . 1 8
jack to TT-4A/TG #2 SEND No.
12 jack at the patch panel; patch
LINES SPARES No. 19 jack to
TT-4A/TG #2 REC No. 13 jack
at the patch panel.
(b) Use field wire and connect binding
posts pair No. 18 to No. 19 at the
J-1077A/U.
(c) Operate TT-4(*)/TG NO. 2 for
full-deplex operation (TM 115815-206-12).
(Clear copy should
be received on the page printer.
(d) R e m o v e t h e p a t c h c o r d s ( ( a )
above)
and the strap ((b)
above).
(3) TT-76(*)GGC.
(a) P a t c h L I N E S S P A R E S N o . 2 0
26
(b)
(c)
(d)
(e)
(f)
jack to TT-76/GGC TO No. 1
jack at the patch panel; patch
LINES SPARES NO. 21 jack to
TT-76/GGC REC No. 16 jack at
the patch panel.
Use field wire and connect binding
posts pair No. 20 to No. 21 at the
J-1077A/U.
Operate the TT-76(*)/GGC transmitter distributor (TM 11-2225).
Clear copy should be received on
the tape.
Patch LINES SPARES No. 20
jack to TT-76/GGC TR No. 15
jack at the patch panel.
Operate the TT-76(*)/GGC keyboard (TM 11-2225). Clear copy
should be received on the tape.
Remove the patch cords ((a) a n d
(d) above) and the strap ( ( b )
above).
e. TH-5/TG Circuits.
Patch the TT-4A/TG #1 SEND No.
10 and REC No. 11 jacks at the
patch panel to TG-5/TG No.
SEND and REC jacks, respectively.
Patch the TT-4A/TG #2 SEND No.
12 and REC No. 13 jacks at the
patch panel to TG-5/TG No. 2
SEND and REC jacks, respectively.
Use field wire and connect binding
posts pair No. 13 to No. 14 at the
J-1077A/U.
Operate TH-5/TG No. 1 and No. 2
(para 27e).
Operate TT-4(*)/TG No. 1 and No.
2, in turn (TM 11-5815-206-12).
Clear copy should be received on the
page printers.
Insert one end of a patch cord, in
turn, into LINES TH-5/TG No. 13
and No. 14 jacks and TH-5/TG No.
1 and No. 2 jacks at patch panel,
while operating TT-4(*)/TG No. 1
((4)
above). Clear copy should be
received on TT-4(*)/TG No. 1 and
no copy should be received on TT4(*)/TG No. 2. Remove the patch
cord.
Patch LINES TH-5/TG No. 13 jack
to TH-5/TG No. 1 and patch LINES
TH-5/TG No. 14 to TH-5/TG No.
2 jack, in turn, at the patch panel
while operating the TT-4(*)/TG
No. 1. Clear copy should be received
on TT-4(*)/TG No. 1 and No. 2.
Remove the patch cord.
Remove the patch cord used in (2)
above and patch the TT-4A/TG #2
REC No. 13
SEND No. 12 and
jacks at the jack panel to TH-5/TG
No. 3 SEND and REC jacks, respectively.
Remove the field wire connection to
binding posts pair No. 14 at the
J-1077A/U and connect the wire to
pair No. 15.
Operate TH-5/TG No. 3 (para 27e).
Operate TT-4(*)/TG No. 1 and No.
2, in turn (TM 11-5815-206-12).
(12)
(13)
(14)
(15)
(16)
Clear copy should be received on
the page printers.
Insert one end of a patch cord, in
turn, into LINES TH-5/TG No. 15
and TH-5/TG No. 3 jacks at the
patch panel. Clear copy should be
received on TT-4(*)/TG No. 1 and
no copy should be received on TT4(*)/TG No. 2. Remove the patch
cord.
Patch LINES TH-5/TG No. 15 jack
to TH-5/TG No. 3 jack at the patch
panel.
Operate TT-4(*)/TG No. 1. Clear
copy should be received at TT-4(*)/
TG No. 1 and No. 3 page printers.
Remove the connections at the J1077A/U.
Remove the patch cords and turn
off the TT-4(*)/TG’s (TM 115815-206-12) and the TH-5/TG’s
(para 29c).
Section II. PREOPERATIONAL PROCEDURES
18. Siting
a. General. The location of Operations Central AN/MSC-32 in relation to other components of an area-type communications system depends on the tactical situation and local
terrain considerations.
b. Ground Installation. When the AN/MSC32 is to be installed on the mound, locate it
on fire, level, dry ground with good drainage.
Place the AN/MSC-32 on concrete blocks or
wooden beams, if possible, and position it to
facilitate connections to the entrance boxes.
c. Truck Installation. When the shelter is
installed on a truck (para 19), remove the
holder assembly from the shelter (fig. 15)
and secure it to the tailgate.
d. Power Unit Location. An ac source
power is rquired for the AN/MSC-32 (para
21); however, this does not include a generator set as a component. If a generator set
is available to supply ac power, locate the generator approximately 75 feet from the AN/
MSC-2 to minimize generator noise interference.
19. Installation of AN/MSC-32
Note. Four men are needed to install the shelter on
the ground or on a truck. A device capable of lifting
3,000 pounds is also required.
a. Lifting and Loading AN/MSC-32 (fig.
25). If the AN/MSC-32 is to be transported
by helicopter, follow only the procedures in
(1) through (4) below and observe the airlift warning notice mounted on the outside of
the shelter. If the shelter is to be installed
on a truck, follow the procedures in (1)
through (10) below.
(1) Use the sling center hooks to connect, the sling assembly to the shelter
lifting eyes.
(2) Place the sling assembly on top of
the shelter.
(3) Connect the four sling hooks to the
lifting ring.
(4) Place the lifting ring over the hook
on the lifting device.
Warning: To avoid injury to personnel and damage to equipment, only the
personnel engaged in the actual loading operation should be permitted near
27
Figure 25.
TM 5895-224-15-19
28
the truck the lifting device, and the
shelter. To eliminate confusion, all
instructions must come from the loading crew supervisor.
into position, and slowly lower it
onto the truck body.
long) to each rear towing eye.
Check to see that all tools and equipment are removed from the truck
body. Lower the truck tailgate.
S lO Wly lift the shelter from the
ground to a position high enough to
clear the body of the truck.
Back the truck into position under
the shelter.
W a r n i n g : All personnel must remain clear of the truck while the shelter is being lowered into position.
(9) Position a man at each of the ropes
((5) above) to guide the shelter
(10) Remove the lifting ring from the
lifting hook and disassemble the lifting ring and sling hooks. Remove the
sling center hooks from the shelter
lifting eyes and the ropes from the
shelter towing eyes.
b. Securing AN/MSC-32 on Truck (fig.
26). Secure the shelter on a truck as follows:
(1) Use the sling hooks farthest from
the turnbuckles and hook each of the
four sling hooks to a tiedown eye on
the shelter.
(2) Use the sling assembly cable attached to the tiedown eye at the
Not., “The entrance door of the shelter must
be ~t the rear of the truck and the front of
the shelter must be sgrdnst the front of the
truck body,
TM 5805-285-15-27
TM5805-285-15-27
Figure 26. A N/.lfSC-W secured on truck.
29
left-front of the shelter, and place
the sling hook nearest the turnbuckle
under the side rail and behind the
second cargo rack support from the
rear of the truck.
(3) Use the sling assembly cable that
is attached to the tiedown eye at
the left-rear of the shelter, and place
the sling hook nearest the turnbuckle
under the side rail and in front of
the second cargo rack support from
the front of the truck.
(4) Follow the procedures given in (2)
and (3) above to secure the right
side of the shelter.
(5) After the sling assembly has been
attached to the side rails of the truck,
tighten the turnbuckles.
Caution: Do not overtighten the
turnbuckles. To prevent the shelter
from twisting in the truck body,
equally tighten all the turnbuckles
at the same time.
(6) Raise and secure the truck tailgate.
c. Unloading AN/MSC-32. To unload the
AN/MSC-32 from a truck, reverse the procedures described in a and b above.
20. Grounding
The AN/MSC-32 must be properly grounded before input power is connected. Select a
grounding site that will not interfere with
the entrance door, the field wires, or the
power cable. Ground the AN/MSC-32 as
follows:
a. Loosen the captive screws and lift the
cover of the power and signal entrance box
(fig. 5).
b. Use the cover support to secure the cover
in the open position.
c. Remove a ground rod and the sledge
hammer (fig. 14) from their mountings.
d. Select a grounding site within 10 feet
of the power and signal entrance box and dig
a small hole, about 6 inches deep, at the site.
e. Remove any paint or grease from the
ground rod.
f. Drive the ground rod into the hole until
the tip of the ground rod is approximately 3
inches from the bottom of the hole.
30
g. Saturate the ground around the rod with
water.
h. Remove a 10-foot ground strap (fig. 2)
from storage cabinet No. 1.
i. Connect one end of the ground strap to
the ground rod. Connect the other end of the
ground strap to the bottom GROUND
TERMINAL in the power and signal entrance
box (fig. 8).
j. Replace the sledge hammer in its mounting (fig. 14).
21. Power Connections
Caution: Ground the shelter (para 20) before connecting power to the AN/MSC-32.
Ac power for the AN/MSC-32 may be obtained from a nearby shelter, or from a central or a commercial power source.
a. Preliminary Procedure.
(1) Operate all circuit breaker and
equipment switches to OFF.
(2) Remove and store the tiedown bar
(fig. 3). Remove the power cable assembly and reel from the shelter.
(3) Unwind the power cable assembly
from its reel and remove the connector covers. Store the cable reel.
b. Obtaining Power from Adjacent Shelter.
The total power consumption of the AN/
MSC-32 is 4,292 watts. Be sure that the
power source output rating for the adjacent
shelter is not exceeded when the AN/MSC-32
is connected.
(1) Operate the MAIN circuit breaker
switch on the power distribution
panel (fig. 10) to OFF.
(2) Remove the cover from the IN POWER 115V AC receptacle in the power
and signal entrance box (fig. 8) and
connect one end of the power cable.
(3) Remove the cover of the OUT POWER 115V AC receptacle in the power
and signal entrance box of the adjacent shelter and connect the other
end of the power cable.
c. Using Commercial Power.
(1) Turn off or disconnect the commercial power before making any connections.
(2) Remove the power cable stub (fig. 2)
from the storage cabinet. If the
power source is a 50- to 60-cycles per
second (cps), 120-240-volt, singlephase, three-wire distribution system,
connect the red and white leads of
the power cable stub to the neutral
bus bar and the black lead to one of
the 120-volt bus bar of the commercial source.
(3) If the power source is a 50- to 60cps, 120-208-volt, 3-phase, four-wire
distribution system, connect the red
and white leads of the power cable
stub to the neutral bus bar, and the
black lead to the phase-1, phase-2, or
phase-3 bus bar.
(4) Remove the cover from the connector
of the power cable stub and connect
the power cable stub to one end of
AN/MSC-32
p o w e r cable
the
assembly.
(5) Remove the cover from the IN POWER 115V AC receptacle in the power
and signal entrance box (fig. 8) and
connect the other end of the power
cable assembly.
Section III. SIGNAL CONNECTIONS
22. Circuit Connections
Circuits are connected at the AN/MSC-32
with a 26-pair cable at the 26-pair receptacle
(fig. 8) or with field wire at the binding post
signal entrance box (fig. 9).
a. In the power signal entrance box 26pair receptacle and in the binding post signal
entrance box binding posts, the SB-22(*) /PT
lines are terminated on pairs 1 through 12,
the No. 1, No. 2, and No. 3 TH-5/TG lines
(2W) are terminated on pairs 13, 14, and 15,
respectively, and the TT-4(*)/TG and TT76(*)/GGC lines may be terminated on pairs
16 through 21, as desired.
b. In the power and signal entrance box,
the local telephone lines (TA-312/PT) are
timinated on pairs 22 through 25. The intercommunication line (LS-147(*)/FI) is terminated on pair 26.
c. Refer to paragraph 23 for 26-pair cable
connecting procedures.
23. Connection Procedure for 26-Pair
Cables
To couple a connector of a 26-pair cable
to a connector of another 26-pair cable
(such as Cable Assemblies, Telephone CK4566/U (250 ft) and CX-4760/U (15 ft) (fig.
2)), use the procedure in a below. To couple
a connector on a 26-pair cable to the receptacle in the power and signal entrance box
(fig. 8) use the procedure in b below.
fig. 27
Caution: Handle the 26-pair connectors
carefully during the coupling and uncoupling
procedures. Do not force or twist the connectors during installation. Never drop or place
an uncovered 26-pair connector on the ground.
(1) Cover removal.
(a) Grasp the knurled collar on each
end of the connector and turn the
collars until the open position is
reached (A).
(b) Disengage the cam on top of the
cover from the slot on the connector collar. Lift and remove the
cover (B).
(2) Coupling procedure.
(a) Position the two 26-pair connectors so that the cams drop into
the slots of the knurled collars and
the male contacts are aligned with
the female contacts (C).
(b) Carefully press the two connectors
together (D).
(c) Lock the two connectors by turnthe knurled collars until the
closed position is reached (E).
(d) Lock the two connector covers together.
(3) Uncoupling procedure.
(a) Unlock the 26-pair connectors by
turning the knurled collars until
the open position is reached (A).
(b) Carefully pull
the connectors
apart.
31
(4) Cover replacement.
(a) U n l o c k t h e t w o c o n n e c t o r c o v e r s .
(b) Position the cover on top of the
26-pair connector.
(c) Engage the cam on the top of the
cover in the slot on the connector
collar (A).
(d) Lock the cover to the connector by
turning the collars until the closed
position is reached.
b. Coupling 26-Pair Connector to 26-Pair
The removal and reReceptacle (fig. 28).
placement procedures for a 26-pair receptacle
(A through D) are the same as those described for the 26-pair connector (a(1) above)
Connect and disconnect a 26-pair connector at
the 26-pair receptacle as follows:
Note. The cabIe end of the connectors is used as a
reference for clockwise or counterclockwise rotation.
(1) Connecting procedure.
(a) Remove the covers and lock them
together.
(b) Position the 26-pair connector on
the receptacle so that the cams
32
drop into the slots of the knurled
collars, and the male contacts are
aligned with the female contacts
(E and F).
(c) Carefully press the connector into
the receptacle (G).
(d) Turn the lever on the receptacle
knurled collar counterclockwise until the collar just engages the cam.
(e) T u r n t h e k n u r l e d c o l l a r o n t h e
connector clockwise until the sleeve
just engages the cam.
( f ) Simultaneously turn the receptacle
collar lever and the connector collar until the closed position is
reached (G).
(2) D i s c o n n e c t i n g p r o c e d u r e .
(a) Simultaneously turn the receptacle
collar lever and the connector collar until the open position is reached.
(b) C a r e f u l l y p u l l
the connectors
apart.
(c) Replace the covers (a(4) above).
Figure 27.
TM 5805-285-15-28
TM5805-285-15-29
Figure 28.
CHAPTER 3
OPERATING INSTRUCTIONS
24. General
This chapter contains operating procedures
for S-184/MSC-32 shelter component. Operating procedure for the major components
are contained in the applicable technical manuals (appx I).
25. Controls and Instruments
The following are the descriptions and functions of the controls and instruments of the
shelter components. For information concerning the controls and instrument of the major
components, refer to the applicable technical
manuals (appx I).
Control, lndioator,
or in-trumenl
Description nnd function
1
Ac voltmeter with 0- to 150“volt scule. Indicates ac input
voltage from extern.d puwer
source,
AC AMPERES meter Ac ammeter with 0- to 60-ampere scale, Indicates totaI
(ammeter),
current drain from external
power sourco by AN/MSG
82 components In use.
Glowlampc (l through Neon lamp. G1OWII when amrnciated circuit breaker switch
6)
1s on.
AC VOLTS meter (voltmeter).
a. Power Distribution Panel (fig. 10).
Control, Indicator,
a Instrument
DeeeriPtlon and function
MAIN elrcult breaker Two internally ganged do-emBwltck
pere ckcult breaker switches.
Provides overload protection
for 1 M-volt, ac input source
and ON-OFF’ control of ac
power to individual circuit
breaker switches,
IdvUd circdt breaker Provide ON-OFF control and
overload protection for lnnrhbaal
divlducul Ci?CUitS M follows t
Chdt’
(aPp%L)
M
1 LIGHTS . . . . . . . .
Fluorescent llghts.
M
Exhaust blower~
2 BLOWERS . . . . .
No, 1 and No, 2
receptacle.e.
20
Electric heater
8 HEATER 1 . . . . .
No, 1 receptacle,
20
4 CONVENIENCE
Convenience receptacles.
Equipment recep15
5 EQUIPMENT . .
tacles.
6 HEATER 2 . . . . .
20
Electric heater
No. 2 receptacle,
b. Lighting (fig. 13,14, and 16).
Control or indicator
Demcrlption and function
BLACKOUT BYPASS Tvo-position ON-OFF switch.
~witch (fig. 14).
Controls ,Jlghtlng In the AN/
MS(Xi2 for blackout operation a follows:
%’Vll#tJ
Sw poa
ON Fluorescent Ilghts
to be controlled
by the individual
llght switches,
OFF Fluorescent IIghts
to be controlled
by door mleroswitch.
POWER INDICATOR Neon lamp. I,ights when ac
power is connected to the
NEON LAMP (fig. 14).
AN/’MSC--S2.
mm? mldroswltch Mlcrawitch. Extinguishes flumwcent IIghtc when shelter
(fig. 14).
door 1s . opened. (BI,ACK(9 UT, BYPASS awltch in
OFF ponltlon.)
LIGHT 1 switch (fig. Two=posltion ON-CIFF switch.
Controls t w o fluorescent
14).
llghts In each row (fig. 16).
33
.—
—.—
Control
or indicator
fig. 14
fig. 13
fig. 16
Description and function
-—.—
Two-position ON-OFF switch.
fluorescent
Controls t w o
lights hr each row.
l’wo-position ON-OFF
Controls nightlight.
switch.
Two-position ON-OFF
Controls spotlight.
switch.
fig. 16
Control
————.—.
BLOWER
1
Two-position ON-OFF switch.
Controls operation of exhamst blower No. 1.
BLOWER 2 switch ---
Two-position ON-OFF switch.
Controis operation of exhaust blower No. 2.
and controls volume of output signal. Switch must be
on to originate a call.
TALK
Two-position nonlocking switch.
Switch must be pressed tn
originate a call.
control ----
Potentiometer. Controls speech
volume from loudspeaker.
GIowlamp -------------
h’eon lamp. One-half of lamp
glows when internal dc power supply is operating.
PRESS
switch.
TO
RECEIVE
f. Patch Panel (fig. 19).
(1) Jackstrip No. 1.
Jack
Function
TH-5/TG: 1, 2, and
3.
Cutoff jacks. Used to patch the
2-wire line output of the indicated TH-5/TG (normally ctmnected to line pairs 13, 14, and
15, respectively) to another line
or shelter equipment.
fig. 17
Descrlption and function
.-—
Three-position
HEAT-OFF-FAN
switch.
6’W
po8
RESET
toaKle switch.
TT-4A/TG #l:
SEND 10 .-_---
Terminating jack. Used to pate
the TT-4(* )flG No. 1 send
circuit to a TH-5/TG SEND
jack or line circuit.
REC 11 --------
Terminating jack. Used to patch
the TT-4(* )/TG No. 1 receive
circuit to a TH-5/TG REC
jack or a line circuit jack.
Furwtiorl
HEAT
Applies ac power
to heater element and fan
motor.
OFF
Disconnects
power fro%
heater
element
and fan motor.
FAN
TT-4A/TG #2:
SEND 12 .-----
Applies ac power
to fan only.
cON..
Thermostat control. Regulates
the ternperfiture provided by
the heating element,
pushbutton ---
Pushbutton which resets the
protective
circuit breakrr
within heater.
TEMPHRATURF;
TRW-..
REC 13 -.-..---
jack or a line circuit.
‘IT-76 /GGC:
TD 14 -.---.---
Terminating jack. Used to patch
the TT-76 (* )/GGC transmitte~distributor circuit @ a TH5/TG SEND jack or a line clrCuit.
TR 15 . . . . . . ..-
Terminating jack. Used to patch
the TT-76 (+ )/GGC keyboard
——fig. 18
control m lndkmtor
—
34
Description and function
.—
OFF-SEND control -..
Description md function
Description and function
---
SWitCh
Control or indicator
Ganged on-off potentiometer,
Turns ac power on and off
FimM3r.
Functlon
Jack
ly marked jacks at the patdh
panel (e above) and to line
circuits,
INTERCOM -----.-
Function
Jack
Cutoff jacks. Used to patch the
Indicated Ilne’ (normally connected to the indicated SB22(*)/PT Mne circuit) to other
shelter equipment or Mne cbCult.
LINES
TH-5/TGt
n, 14 end 18.
Cutoff jedca. Used to patch the
indicated llne (normally connected to TH-6/TG No. 1, 2,
and ~ reqxMvely) to another
shelter eqtdpmento
LINE$ $PARESI 16
- g~o
Terminating jaeka. Wed to patch
the Indicated line to Bhelter
equipment.
PHONR
Terminating jacks, Used to connect In parallel with the
PHONE 1 through PHONE 4
jacka in the signal ducts (h
Mow].
1 through
g. Teletypewriter Patch Panel (fig. 20).
seek
I
Ftmction
Terminating jacks. Used to connect send end meehe circuits
of tha indicated; TT4(4)/TG
to slmllarly marked jacks at
the patch panel (f(l) above).
TT4A/TO #1 and
TT=-bA/’m
#n:
amm ems llEc
Terminating jacks. Used to conned the tranmoltter-dhtrlbutor,
[email protected]& and reeelve circuit,
reepeetively, of the TT-76 (* )1
00(5 to similarly marked Jacks
at the psteh panel (f(l)
dove).
h. Signal Duct Jacks (fig. 11, 12, and 13).
Jsak
~0~ 1, PHONE
% PHONE & ad
mom 4
Terminating jacks connected in
parallel. Used to connect LS147 (“ )/F I to intercom line between shelters.
I
Function
I
Terminating jacks, Used to conneet the LINE ebdt of a
TA49/PT (fig. 24) to almllar-
i. TH-5/TG Subdistribution Panel (fig. 21).
Control, lndlcator
or receptacle
Function
ON-OFF switch ..-.
Each switch controls ac power to
aasoclated receptacle.
GIowlamp --------- .
Each gIowhamp lights when associated ON-OFF witch is operated to ON.
.---..-
Each receptacle is used as a connection for ac power cord connector of a TH+TG
Receptacle
26. Energizing Ac Circuits
Warning: To prevent asphyxiation, the
shelter must be ventilated at all times when
occupied.
Prepare the AN/MSC-32 for full operation
as follows:
a. Connect the AN/MSC-32 to the available
power source (para 20); the POWER INDICATOR NEON LAMP (fig. 14) will light.
b. Operate the MAIN circuit breaker switch
on the power distribution panel (fig. 10) to
ON.
c. Operate the BLACKOUT BYPASS switch
(fig. 14) to ON. When blackout conditions
are required, operate the switch to OFF.
d. O p e r a t e c i r c u i t b r e a k e r s w i t c h N o . 1
(LIGHTS) to ON.
e. O p e r a t e t h e L I G H T 1 a n d L I G H T 2
Operate the
switches (fig. 14) to ON.
NIGHT LIGHT switch (fig. 14) to ON as
required.
f. Check to see that the voltmeter (fig. 10)
indicates 115 volts ac ±10.
g. Check to see that the ammeter indicates
nearly 0 ampere.
h. Operate circuit breaker switches No. 2
through 6 to ON.
35
27. Operating Procedures
NOEU. Refer to the appllcnble technical manuals (appx
I) for’ operating procedurcn for the maJor components.
E&Met’ to paragraph 25 for descriptions and functions of
controls and Instruments of xhelter components,
Warning: To prevent asphyxiation, the shelter must be ventilated at all times when occpied.
a. Electric Heater (fig. 17). Insert the
power cord connector plug into the appropriate HEATER receptacle (fig. 11 and 14)
and operate the HEAT-OFF-FAN switch to
the desired position. When the HEAT-OFFFAN switch is operated to HEAT, set the
TEMPERATURE CONTROL to the desired
setting.
Caution: Before performing the procedure
in b below, open the air vent cover (fig. 5) and
the exhaust blower vent cover on the front of
the shelter. If the covers are not opened, the
motors will be damaged from overheating.
b. Exhaust Blowers (fig. 17). Connect the
power cord connector plug into the appropriate blower receptacle (fig. 16) and operate the BLOWER switch to ON.
c. Intercommunication Station LS-147(*)/
FI (fig. 18) .
(1) Insert the power cord camector plug
into the INTERCOM power duct receptacle (fig. 16) and connect the
ground lead to the ground terminal
provided adjacent to the receptacle.
(2) Insert the telephone connecting cord
plug into the INTERCOM signal duct
jack below the SB-22(*)/PT (fig.
13).
(3) Operate the OFF-SEND switch to 5
(approximately midposition). The
glowlamp will light.
(4) O p e r a t e t h e P R E S S T O T A L K
switch and speak into the speakermicrophone on the front panel; release the PRESS TO TALK switch
to receive.
d. TH-5/TG Subdistribution Panel ( f i g .
21).
(1) Insert the TH-5/TG subdistribution
panel power cord connector plug into the TH-5/TG receptacle (fig. 12).
(2) Operate the ON-OFF switch to apply
power to the TH-5/TG No. 1, 2, and
3 (e below) connected to the associated receptacle. The associated glowlamp lights.
e. Terminal, Telegraph TH-5/TG (fig. 13).
Use the following procedures for each TH-5/
TG (TM 11-5805-246-10).
(1) Insert the power cord connector plug
into the associated receptacle in the
TH-5/TG subdistribution panel ( d
above) and apply power to the TH5/TG.
(2) Operate the 4W-2W-TEL switch to
2W and the NORM-REC-SEND
switch to NORM. Operate the RING
switch to transmit a ringing signal.
f. PHONE 1 Through PHONE 4 TA-312/
PT (fig. 24).
(1) For PHONE 1 TA-312/PT, insert
the telephone connecting cord into
the PHONE 4 jack (fig. 13), and operate the TA-312/PT as desired
(TM 11-2155).
(2) For PHONE 2, 3, and 4 use, perform the procedures given in paragraph 12a.
g. Distribution Box J-1077A/U (fig. 13).
(1)
(2)
para 23a(3)
Note. ‘l’he OFF-SEND switch doen not
have to be operated to receive l call.
(3)
(5) Operate the RECEIVE control to
regulate the volume of an incoming
call.
(4)
Nrde. The IS147(*)/FI mny Iw movwt to
an q? -rnting poeitlon on tlw rwulnldr I uhlrlq)
36
(fig. 12) by rmnovlng it from its mounth
position (para 40). Insert the power cord c
nector plug and the tele}>hone connecting [email protected]
Into the approprlntc CONVENIENCE 4 receptacle and INTERCOM jack, respectively ~ connect the power .COM ground lead,
para 23a(2)
(5)
(6) Connect field wire to the terminals as
desired.
h. Patching (fig. 19). The SB-22(*)/PT,
TH-5/TG line, PHONE 1 through PHONE
(TA-312/PT), and INTERCOM (LS147(*)/FI) circuits are connected directly to
their assigned lines and no patching is required. Teletypewriter circuits are established
on a direct-current (dc) or vf basis by patching. Perform the following procedures at the
patch panel:
(1) Vf half-duplex teletypewriter operation.
(a) Patch the TT-4A/TG (#1 or #2)
SEND jack or the TT-76/GGC TR
and TD (as desired) jacks to the
SEND jack of a TH-5/TG (No. 1,
2, or 3).
(b) Patch the TT-4A/TG (#1 or #2)
REC jack or the TT-76/GGC REC
jack to the REC jack of a TH5/TG (No. 1, 2, or 3).
(2) Dc teletypewriter operation. Patch,
as desired, any TT-4A/TG (#1 and
#2) jack and TT-76/GGC jack to a
LINES SPARES (16 through 21)
jack: or, if required, to any LINES
SB-22/PT (1 through 12) jack. In
the latter case, the associated line
jack on the SB-22(*)/PT is disconnected from its assigned line circuit.
(3) Telephone net. Patch PHONE 1, 2,
3, or 4 jack to another PHONE jack,
a LINES SPARES (16 through 21)
jack, or a LINES SB-22/PT(1
through 12) jack. In the latter case,
the associated line jack on the SB22(*)/PT is disconnected from the
assigned line circuit.
28. Operation Under Adverse Climatic
Conditions
Operations Central AN/MSC-32 can be operated in extremely cold or hot climates. The
shelter offers complete protection from the elements for personnel and equipment; however,
when the entrance boxes are exposed to adverse conditions, the following precautions are
necessary:
a. Cold Climates. Extreme cold causes the
cables and wires to become hard, brittle, and
difficult to handle. Be careful when handling
the cables and when connecting them to the
AN/MSC-32 so the kinks and unnecessary
loops will not result in permanent damage.
Make sure that the binding posts and cable receptacles on the outside of the AN/MSC-32
are free of frost, snow, and ice by replacing
the covers on the receptacles and closing the
covers on the entrance boxes when they are
not in use. Lower the folding side panels when
the entrance box covers are open. Replace
the connector cover as soon as the connector
is disconnected from the equipment; never
drag or place an open connector in the snow.
b. Hot Climates. In hot, dry climates, the
connectors, receptacles, and binding post are
subject to damage from dirt and dust. Lower
the folding side panels when the entrance box
covers are open. Close the covers on the entrance boxes when they are not in use and
replace the covers on the cable connectors.
Never drag or place an open connector on the
ground.
c. Warm, Damp Climates. In warm, damp
climates, the equipment is subject to damage
from moisture and fungi. Wipe all moisture
and fungi from the exterior of the equipment
with a lint-free cloth.
29. Stopping Procedures
Nottt To turn off the power h-i an emergency=, operrntc
the MAIN circuit breaker switch to OFF.
a. Major Components. Stopping procedures
are not required for the SB-22(*)/PT, or the
TA-312/PT. Refer to the appropriate technical manuals for teletypewriter equipment stopping produres (appx I). Refer to paragraph
57 for procedures to be performed for storage
or transit of the AN/MSC-32.
b. S-184/MSC-32 Components.
(1) Electric heaters. Operate the TEMPERATURE CONTROL to its lowest
setting and the HEAT-OFF-FAN
switch to OFF.
(2) Intercommunication Station LS-147
(*)/FI. O p e r a t e t h e O F F - S E N D
switch to OFF.
No#d. After the other S-M4/MSC-8S component ((1 ) and (2) above) have been turned
off, allow the exhaust blowers to remain III
37
38
operation for at kwt 10 minutes to evucutitr
~11 smoke and fumes lx-fore com})leting the
sto,)l)ing ~)rocedurc> find closing the .+ltcr
ch;or.
C . TH-5/TG Subdistribution Panel. Operate
the ON-OFF switches to OFF. The associate
glowlamp is extinguished.
(3) E x h a u s t B l o w e r s . O p e r a t e t h e
BLOWER
1
and
BLOWER
2
switches to OFF.
d. Circuit Breaker and Light Switches. O p erate all circuit breaker and light switches to
OFF.
CHAPTER 4
MAINTENANCE INSTRUCTIONS
Section I. OPERATOR’S MAINTENANCE
30. General Maintenance
Clean and inspect all component of the AN/
MSC-32 regularly. Detailed maintenance procedures pertaining to the major components
are covered in the appropriate technical manuals (appx I).
a. Use a clean, dry, lint-free cloth or brush
for dusting.
b. For cleaning, if necessary, moisten the
cloth or brush with Cleaning compound (FSN
7930-395-9542); after cleaning, wipe dry
with a cloth. Do not use cleaning compound
on electrical contacts.
Warning: Cleaning compound is flammable
and its fumes are toxic. Do not use near a
flame; provide adequate ventilation.
c. Dry, compressed air, not exceeding 60
pounds per square inch, may be used to remove dust from inaccessible places.
Warning: Compressed air is dangerous and
can cause serious damage to eyes, ears, nose,
and other parts of the body. It also can cause
mechanical damage to the equipment. Do not
use compressed air to dry parts where cleaning compound has been applied.
31. Took and Materials Required
a. Tools and Test Equipment. The tools and
test equipment required for maintenance of
the major components are listed in the applicable technical manuals (appx I). The tool
kit (fig. 2) is required for maintenance of the
S-184/MSC-32.
[email protected] A Mat wf mumhg sp~ree required for operator’s
ti~ of the AN/MH 10 eontalned In appendix
III.
b. Materials.
Item
Federal
ttock No.
Abresht, rnh&: sandp~~r #QOOOJ t? x
19 h. S*
[email protected]
Cloth, textile: c-loth I IIat-fm f 89
in.
4QtM701b
Orangaetick
61W40$40W
Tape TL48
697Q-18Hi00$
Cleaning eaqxwnd
WxHw4wa
Abraelv~ dmet ~ C-US 9 X 11 h.
(Oral)’
Grease, graphite, aircraft MIW71S7
(eMA]
sww-2a&4001*
Lubricating oil, Internal cornbumth engine MILL21MA (OE-M)
$IWWGW5’
Polish, metml # PMM
6631516’
Lubricating 011, general puw, preeervetive MIL-L64A (PL speeial)
W&437&-meetw
l Slgnml Corps .atook number,
Untertm l%dera! mtoek number.
*Quartermaster Corpo stock number.
Wrdnance Corps Iteme,
32. Daily Preventive Maintenance
a. Check for completeness and general condition of the equipment and spare parts.
b. Remove dirt, dust, grease, and moisture
from the exposed parts.
c. Remove rust, corrosion, fungi, dirt, and
moisture from the binding posts, cable connectors, and receptacles.
d. Inspect the field wire connections at the
binding posts for good contact.
e. Inspect the ground rods and ground strap
connections for good contact.
f. Inspect all exposed cables for kinks,
39
and
33.
a. Clean and tighten the cmnponents, racks,
mountings, installations, cables, and connectors.
b. Inspect the components, racks, mountings, installations, and exposed metal surfaces
for rust, corrosion, and moisture.
c. Inspect the cables and wires for cuts,
breaks, fraying, deteriorations, kinks, and
strain.
d. Inspect for looseness of accessible items,
such as component switches, circuit breaker
switches, signal and ac cable assemblies, and
glowlamps.
e. Clean the air filter, nameplates, meters,
and clock.
f. I n s p e c t m e t e r s a n d c l o c k f o r d a m a g e d
glass and cases.
g. Wind the clock (fig. 13).
h. Inspect the shelter for support, installation, rust, corrosion, and moisture.
i. Check the entrance boxes, exhaust blower
vents, and air filter intake for cracks, leaks,
damaged gaskets, dirt, and grease.
j. Check for normal operation.
34. Monthly Preventive Maintenance and
Lubrication
a. Lubricate locks and latches. Use grease,
graphite, aircraft (GGA).
b. Lubricate the hinges on the shelter door
and on the entrance boxes, exhaust blower
Xtem
Item
No.
.— —
AC circuits .- . . ..Pl
R
E
P
A
R
A
T.’
!3
R
Y
40
vent, and air vent covers. Use oil (PL special
or OE-10).
c. L u b r i c a t e all m e t a l - t o - m e t a l m o v i n g
parts.
Caution: More frequent lubrication may be
required for items listed above in excessively
hot, humid, or dusty areas. Do not overlubricate.
d. Remove the shelter air
14) and soak it in cleaning
zine, or naphtha. Shake loose
filter, air-dry the filter, and
mounting.
vent filter (fig.
compound, bendirt from the air
replace it in its
e. Check the fire extinguishers (fig. 11 and
14) for a broken wire seal on the trigger mechanism. If an extinguisher has been used, or
if there are any signs of leakage, request that
it be recharged by appropriate personnel.
35. Equipment Performance Checklist
The equipment performance checklist is
used to systematically check the AN/MSC-32.
Only first echelon maintenance corrective
measures are given in the Corrective measures
column. If the corrective measures given do
not correct the fault, request higher echelon
maintenance. When using the checklist, start
at the beginning and follow each step consecutively. If the trouble is suspected in a
particular area, start checking at that point
and continue the steps sequentially. Refer to
the power schematic-wiring diagram (fig. 41)
when checking the S-184/MSC-32 ac circuits.
When a fault or trouble is located in a major
component item, refer to the applicable technical manual (appx I). First echelon repair
procedures are
given
in p a r a g r a p h s 3 6
through 45.
Action or
condition
Normal
indication
All equi~9rnrmt and power
duct switches at OFF;
energizes M circuits in
tire sequence given in
paragraph 26.
As eech circuit breaker
switch is operated to ON,
aswxiated glowlamp
lights.
Correct 1 vc
menmlren
f(. Reset circuit
switch.
breaker
b, Cheek ac power sourcv.
Check power cable arwrmbly and replace if dcfrctive.
r. Perform appropriutv rrpair procedure (para 36
Item
m
o.
132
Shelter components.
Q
Action or
condition
Operate
as outlined
paragraph 27.
in
T.J
I
P
M“
E
N
T
J?
E
R
F
Normal
indication
Corrective
measures
Component functions; glowIamps
associated ‘with
LS-147 (*)/FI and TH5/TG subdistribution panel light. As components
are operated, current indication on power distribution panel ammeter
increases (approximately
3 amperes for each blower and 10 amperes for
each electric heater).
u. Replace fuses or lamp
(para 37)
and press
RESET pushbutton ( f i g .
1 7 ) on electric heaters, as
required.
Communication is possible
on all signal circuits connected to the AN/MSC32.
a. Check suspected major
proper
component
for
(para
11
connections
through 16).
b. Perform appropriate re-
pair procedure
through 42).
(para 37
0
R
M
A
N
c
E
Major
components.
Operate major components
as outlined in appropriate
technical manuals (appx
I).
b. Check signal conncctiom
to AN/MSC-32 ( p a r a
22).
M
‘E
N
T
c. Perform operator’s maintenance as outlined in appropriate technical manual (appx I).
F
E
R
F
0
It
M
A
‘N
c
E
S4
components.
Refer to appropriate technical manuals (appx I)
for stopping procedure.
Shelter components,
Perform stopping procedure
as outlined in paragraph
29.
Major
41
36. Replacement of Hand Lantern Batteries
and Bulb
(fig. 29)
The hand lantern requires four Batteries
BA-30 which are not supplied with the
lantern. A spare bulb is stored inside the reflector case.
a. Replacing Batteries.
(1) Pull the latch forward and raise the
battery case cover.
(2) Insert four batteries in the case with
the center brass caps up.
(3) Snap the battery case cover shut.
b. Replacing Bulb.
(1) Press the button on the bottom of
the reflector case and lift out the reflector.
(2) Unscrew the brass cap at the rear of
the bulb and remove the bulb and
spring.
(3) Remove the spare bulb from the inside of the reflector case. Insert the
bulb and spring in the reflector and
tighten the brass cap.
(4) Replace the reflector in the reflector
case and snap it securely in position.
37. Removal and Replacement of Lamps
and Fluorescent Lamp Starters
a. Fluorescent Lamp.
Pull gently to remove the light shield
from the fluorescent light fixture.
Rotate the lamp in its sockets onequarter turn and remove it from the
fixture.
Remove the spare lamp from its
storage brackets (fig. 16).
Align the lamp with the slots in the
fixture sockets.
Press in and rotate the lamp
one-quarter turn to seat the pins
firmly.
Replace the light shield on the fluorescent light fixture.
b. Fluorescent Lamp Starter.
(1) Remove the light shield and lamp
(a(1) and (2) above) to expose
the starter.
(2) Press in and twist the starter oneq u a r t e r t u r n c o u n t e r - c l o c k w i s e and
TM5805-385-15-30
Figure 29.
42
withdraw it.
(3) Remove the spare starter from its
storage bracket (fig. 16). Insert the
new starter, press in, and turn it
clockwise until it seats.
(4) Replace the lamp and light shield
(a(4) through (6) above).
c. Neon and Incandescent Lamps. To remove a defective neon or incandescent lamp,
unscrew it from its socket.
38. Removal and Replacement of Electric
Heater
(fig. 17)
a. Removal.
HEATER-OFF-FAN
(1) O p e r a t e t h e
switch to OFF.
(2) Remove the power cord connector
plug from the HEATER receptacle
(fig. 11 or 14).
(3) Loosen the four turnlock fasteners
that secure the heater to the mounting base.
( 4 ) Remove the mounting base knob.
( 6 ) S1ide the heater to the right until it
clears the flange on the mounting
base and lift out the heater.
b. Replacement.
(1) Slide the heater onto the mounting
base so that it engages the flanges.
(2) Tighten the four turnlock fasteners.
(3) Replace and tighten the mounting
base knob.
39. Removal and Replacement of Exhaust
Blower Cover
a. Removal.
(1) O p e r a t e t h e a s s o c i a t e d B L O W E R
switch to OFF (fig. 16).
(2) Remove the power cord connector
plug from its receptacle.
( 3 ) Remove the screws that secure the
cover to the front wall and lift off
the cover.
b. R e p l a c e m e n t . Replace the cover by following the procedures in (1) through (3)
above in the reversed order.
40. Removal and Replacement of
LS-147(*]/FI
a. Removal.
(1) R e m o v e t h e p o w e r c o r d c o n n e c t o r
plug from the INTERCOM power
duct receptacle (fig. 16).
(2) R e l e a s e t h e m o u n t i n g c l a m p s b y
loosening the captive wingnuts.
(3) Disconnect the telephone connecting
cord from the binding posts on the
rear of the LS-147(*)/FI.
(4) Remove the LS-147(*)/FI from its
mounting Psition.
b. Replacement. Replace the LS-147(*)/FI
by following the procedures in a(1) through
(4) above in the reversed order.
41. Removal and Replacement of
SB-22(*)/PT
a. Removal.
(1) Remove the wingnuts that secure the
SB-22(*)/PT retaining bar (fig. 13)
and raise the retaining bar.
(2) Slide
the
SB-22(*)/PT
forward
from the rack mounting and expose
the rear of the SB-22(*)/PT.
(3) Disconnect the wires from the binding posts on the rear of the SB22(*)/PT.
(4) Remove
the
SB-22(*)/PT.
Remove
the batteries from the SB-22(*)/PT
(TM 11-8805-262-12) .
b. Replacement. R e p l a c e t h e S B - 2 2 ( * ) / P T
by the following appropriate procedures in
paragraph 11.
42. Removal and Replacement of
TA-312/PT (PHONE 4, Mounted)
(fig. 11 and 24)
a. Removal.
(1) R e m o v e t h e t e l e p h o n e c o n n e c t i n g
cord leads from the LINE binding
posts of the TA-312/PT.
(2) R e m o v e t h e f l a t h e a d s c r e w o n t h e
side of the mounting bracket.
(3) L i f t t h e T A - 3 1 2 / P T o u t o f t h e
mounting bracket and remove the
holding plate from the buzzer recess
on the side of the TA-312/PT.
(4) Remove the batteries from the TA312/PT (TM 11-2155).
b. R e p l a c e m e n t . R e p l a c e t h e T A - 3 1 2 / P T
by following the appropriate procedures in
paragraph 12.
43
43. Removal and Replacement of
TT-4(*]/TG
a. Removal.
Operate the MOTOR switch on the
TT-4(*)/TG
to
OFF.
Disconnect the power cord connector
plug from the TT-4A/TG receptacle
(fig. 13) and the teletypewriter connecting cords from the teletypewriter
patch panel.
Remove the web strap across the
TT-4(*)/TG.
Remove
the
wingnut
beneath the tabletop or mounting
shelf and remove the holddown bars.
Lift the TT-4(*)/TG from its position.
b . R e p l a c e m e n t . Replace the unit by following the appropriate procedure in paragraph 15.
44. Removal and Replacement of
TT-76(*)/GGC
a. Removal.
Operate the MOTOR and POWER
switches
on
the
TT-76(*)/GGC
to
OFF.
Disconnect the power cord connector
plug from the TT-76/GGC receptacle
(fig. 13). Disconnect the teletype-
writer connecting cords from the
teletypewriter patch panel (fig. 20).
(3) R e m o v e t h e w i n g n u t s b e n e a t h t h e
tabletop. Remove the TT-76(*)/
GGC from its position.
b . R e p l a c e m e n t . Replace the unit by following the appropriate procedures in paragraph 14.
45. Removal and Replacement of
TH-5/TG
a. Removal.
(1) Operate the associated ON-OFF
switch on the TH-5/TG subdistribution panel (fig. 12 and 21) to OFF.
(2) Disconnect the power cord connector
from the TH-5/TG subdistribution
panel receptacle. Remove any patch
cords connected to the SEND and
REC jacks.
(3) Tag and remove the wires connected
to the 2W binding posts.
(4) Lift up the rack designation plate.
Pull the chassis forward and lift it
from its rack mounting.
b. Replacement. Replace the unit by following the appropriate procedures in paragraph
13.
Section II. ORGANIZATIONAL, FIELD, AND DEPOT MAINTENANCE
Note. The maintenance allocation chart (appx II) indicates the maintenance functions and tools authorized for
each umintensmce echelon,
46. Troubleshooting Information
a. Procedures for localizing troubles within
the AN/MSC-32 are given in the equipment
performance checklist (para 35).
b. P r o c e d u r e s f o r t r o u b l e s h o o t i n g c o m p o nents, parts, and wiring of the S-184 /MSC-32
are given in paragraph 47.
c. Procedures for troubleshooting the major
components of the AN/MSC-32 are given in
the applicable technical manuals (appx I). Refer to paragraphs 36 through 45 for removal
and replacement of components.
44
47. Troubleshooting and Repair
Procedures
Isolate defective components, parts, or wiring of the S-184/MSC-32 by making appropriate voltage, resistance, or continuity tests
with Multimeter AN/URM-105. Refer to figure 41 when isolating trouble in the power
circuits and to figure 42 for signal circuits.
Repair or replace components, parts, or wiring. Use the chart below for references to repair procedures.
Warning: Be extremely careful when performing the troubleshooting procedures; dangerous voltages are present in the equipment.
Reference
Part or comwnent
Para
Door mieroswitch . . . . . . . . . . .
Ektric
heater --------------
Etiwt blower
-------------
Fluom=ent light fixture ----Power distribution
panel ----
51b
49
50
62
4!3
Switchm --------------------
64
51
M-pair cable rmeptacle ------
58
$belbr repairs ---..---------
Fig. NO
31, 32
33, 34
36
30
37, Ss, 39
48. Power Distribution Panel Repairs
(fig. 30)
a. Preliminary Procedures. Operate the
MAIN circuit breaker switch to OFF (fig. 10)
and disconnect the ac power cable at the power and signal entrance box (fig. 8). Remove
the screws that secure the power distribution
panel cover and remove the cover.
b. Removal and Replacement of Circuit
Breaker Switch.
(1) Grasp the defective circuit breaker
switch and pull it straight out from
the panel.
(2) Insert the replacement circuit breaker switch in place and press it back
into the panel.
c. Removal and Replacement of Current
Transformer.
(1) Remove the screws that hold the
meter panel to the power distribution
panel.
(2) Tag and disconnect the current
transformer leads from the ammeter.
(3) Remove the bolts that secure the current transformer inside the panel
and remove the current transformer.
Note. Count the number of turns of heavy
black wire around the current transformer before performing the procedure in (4) below.
(4) Disconnect the black wire wound
around the current transformer from
the MAIN circuit breaker switch and
TM5805-285-15-33
F i g u r e 3 0 . Typical power diatributicm pane!, meter ptincl, attd t-ircwit breaker switch rcmovad.
45
TM5805-285-15-31
Figure
3 1 . Electric heater, partially di8aa8embled, rear view,
carefully unwind the wire from the
current transformer.
Wind the black wire around the replacement transformer.
Caution: Be sure that the number
of turns is the same as on the original transformer. Reconnect the black
wire to the MAIN circuit breaker
switch (fig. 41).
TM5805-285-15-39
F i g u r e 3 2 . Electric heater, ncbmutic o!iug rum.
46
Position the replacement transformer
inside the panel and replace and
tighten the bolts.
(7) Connect the transformer leads to the
ammeter.
(8) Replace the meter panel and tighten
the screws.
d. Removal and Replacement of Meter.
(1) Remove the four screws that hold the
(2)
(3)
(4)
(5)
(6)
meter panel to the power distribution panel.
Tag and disconnect the leads from
the meter terminals.
Remove the screws that hold the
meter to the meter panel and lift out
the meter.
Connect the leads to the replacement
meter.
Position the meter in the panel and
tighten the screws.
Replace the meter panel and tighten
the screws.
49. Electric Heater Repairs
(fig. 31 and 32)
a. Preliminary Procedures. Before performing the repair procedures in b t h r o u g h g b e low, remove the heater from its mounting
base (para 38a) and remove the backplate
and bottom plate as follows:
Remove the screws that secure the
bottom plate to the heater.
Remove the screws that secure the
backplate to the bottom plate, and
remove the bottom plate.
(3) Loosen the power cord clamp on the
backplate.
Remove the screws that secure the
backplate to the heater and remove
the backplate.
b. Removal and Replacement of Power Cord.
Loosen the screws and remove the
the power cord leads from terminal
board TB1 (fig. 32).
Pull the power cord out of the clamp
in the backplate (fig. 31).
Insert a new power cord through the
clamp in the backplate.
Connect the leads to terminal board
TB1.
c. Removal and Replacement of Temperature Control Unit.
(1) Loosen the screws and remove the
wires from the temperature control
unit.
(2) Remove the screws that secure the
unit to the cabinet and remove the
unit.
(3) Insert the TEMPERATURE CON-
TROL switch on the replacement
unit through the slot in the cabinet.
Replace and tighten the screws.
( 4 ) Connect the wires to the temperature
control unit.
d. Removal and Replacement of HEATOFF-FAN Switch.
(1) T a g a n d u n s o l d e r t h e t i r e s a n d
strap connected to the switch.
( 2 ) Remove the ringnut that secures the
switch through the top of cabinet
and remove the switch.
( 3 ) Solder the strap and the wires to the
replacement switch.
( 4 ) Position the switch and tighten the
ringnut.
e. Removal and Replacement of Reset Circuit Breaker.
(1) L o o s e n t h e s c r e w s a n d r e m o v e t h e
insulated wires to the circuit breaker.
Loosen the bolt and remove the bare
copper wire from the heating element.
(2) Remove the mounting screws that
fasten the circuit breaker to the cabinet and remove the circuit breaker.
(3) C o n n e c t t h e i n s u l a t e d w i r e s ( ( 1 )
above) to the replacement circuit
breaker. Connect the bare copper
wire to the heating element.
Caution: Do not alter the shape or
length of the bare copper wire.
( 4 ) Position the circuit breaker and replace and tighten the mounting
screws.
f. Removal and Replacement of Motor and
Impeller.
(1) Remove the screws that secure the
motor bracket to the cabinet and lift
out the motor bracket.
( 2 ) Tag and disconnect the motor leads
at the HEAT-OFF-FAN switch and
at the taped splice in the heating element cable.
( 3 ) Remove the screws that secure the
motor to the bracket.
( 4 ) Unscrew the metal fastener that secures the impeller to the motor shaft
and remove the impeller.
(5) Position and secure a replacement
47
Figure 33.
Exhaust blower, front and rear view.
(3)
Figure 34. Exhaust blower, schematic-wiring diagram.
motor in the bracket. Slide the impeller onto the motor shaft and tighten the fastener.
(6) Replace the motor bracket in the cabinet and connect the motor leads
((2) above).
g. Removal and Replacement of Heating
Element.
(1) Remove the screws that secure the
motor bracket to the cabinet and remove the motor bracket.
(2) Loosen the bolt that secures the bare
48
(4)
(5)
(6)
(7)
(8)
copper wire from the circuit breaker
to the heating element and remove
the wire.
Caution: Be extremely careful
when removing this lead. Do not
alter the length or shape of the bare
copper wire.
Tag and remove the wire connations
from the plug-in terminals on the
heati ng element.
Remove the screws that secure the
heating element to the cabinet. Be
careful not to bend the louvers on
the front of the cabinet during the
removal procedure.
Position the replacement element and
replace and tighten the screws.
Connect the wires to the plug-in
terminals of the heating element.
Replace the bare wire connected
from the circuit breaker ((2)
above).
Position the motor bracket in the
cabinet and replace and tighten the
screws.
TM5895-224-15-17
F i g u r e 3 5 . TH-5/Tf7 ~ubdistribution punel wiring diagram.
TM5805-285-15-38
F i g u r e 3 6 . Fluorescent light &Ww, achemdc-wiring diagram,
50. Exhaust Blower Repairs
(fig. 33 and 34)
a. Preliminary Procedures. Before performing the repair procedures in b t h r o u g h d b e low, remove the exhaust blower cover (para
39a) and remove the power cord connector
plug from its receptacle (fig. 16).
b. Removal and Replacement of Capacitor.
( 1 ) Loosen the capacitor clamp screw.
( 2 ) Remove the power cord clamp from
the motor bracket.
Slide the capacitor out of the clamp.
Tag and disconnect the motor leads
and the power cord from the capacitor terminals.
(5) Connect the motor leads and the
power cord to the replacement capacitor (fig. 34).
(6) Slide the capacitor into the clamp
and tighten the screw.
(7) Replace the power cord clamp.
c. Removal and Replacement of Power Cord.
( 1 ) Remove the capacitor from the clamp
(b(2) through (4) above),
( 2 ) Tag and disconnect the power cord
leads from the capacitor and motor
leads.
(3) Connect the new power cord to the
capacitor and motor leads (fig. 34).
( 4 ) Slide the capacitor into the clamp
and tighten the screw.
49
(5) Replace the power cord clamp.
d. Removal and Replacement of Motor and
Impeller.
( 1 ) Remove the screws from the bottom
edge of the plate that holds the exhaust blower to the front wall.
(2) Lift the exhaust blower away from
the wall.
(9) Remove the bolts that secure the
blade guard and motor brackets to
the blower ring.
( 4 ) Tag and disconnect the motor leads
from the capacitor and power cord.
( 5 ) Remove the power cord clamp.
( 6 ) Remove the screws that secure the
motor mounting bracket to the
motor.
( 7 ) Loosen the Allen-head setscrews that
secure the impeller to the motor
shaft and remove the impeller.
( 8 ) Slide the impeller (setscrews toward
the motor) onto the shaft of the new
motor and tighten the setscrews.
( 9 ) Secure the motor bracket to the new
motor.
( l 0 ) Connect the motor leads to the capacitor and power cord (fig. 34).
(11) Replace the power cord clamp.
(12) Position the motor bracket and blade
guard on the blower ring.
(13) Replace and tighten the bolts that
secure the motor bracket and blade
guard to the blower.
(14) Replace the exhaust blower by reversing the procedures given in (1)
and (2) above.
(15) R e p l a c e t h e e x h a u s t b l o w e r c o v e r
(para 39b).
51. Removal and Replacement of Switches
a. Power Duct Switches.
( 1 ) Operate the associated circuit breaker switch to OFF (fig. 41).
( 2 ) Remove the screws from the brackets
at each end of the switch. Remove
the two brackets and the switchplate.
( 8 ) Remove the switch mounting screws
and the switch.
( 4 ) Tag and remove the wires from the
switch and connect them to the replacement switch (fig. 41).
50
(5) Replace the switch by reversing the
procedures given in (1) through (4)
above.
b. Door Microswitch.
(1) D i s c o n n e c t a c p o w e r f r o m t h e A N /
MSC-32.
(2) C a r e f u l l y p r y o f f t h e T o w e r d u c t
cover between the POWER INDICATOR NEON LAMP and LIGHT 1
switch (fig. 14).
(3) Tag and remove the wires from the
NO and C terminals of the switch
(fig. 41).
( 4 ) Unscrew the ringnut from the door
side of the switch, and remove the
switch.
(5) Replace the switch by reversing the
procedures given in (1) through (4)
above.
c. TH-5/TG Subdistribution Panel Switches
(fig. 21).
(1) Operate circuit breaker switch No. 5
to OFF.
( 2 ) Remove the screws that secure the
panel to the case.
(3) Remove the ringnut that secures the
switch to the panel and remove the
switch from the panel.
(4) Tag and disconnect the wires from
the switch (fig. 35).
( 5 ) Replace the switch by reversing the
procedures given in (1) through (4)
above.
52. Removal and Replacement of
Fluorescent Light Fixture Components
Note. The fluorescent liuht fixtures are fabricated as
part of the power duct, ~he radiofrequency filters are
scaled units; they are not repairable and are replaced as
a complete unit.
a. Operate the associated LIGHT switch to
OFF; remove the light shield and the fluorescent lamp (para 37a(1) and (2)).
b. Carefully pry off the associated power
duct cover.
c. T a g a n d d i s c o n n e c t t h e w i r e s f r o m t h e
defective component (fig. 36) and remove the
defective component from the power duct.
d. S e c u r e t h e r e p l a c e m e n t i n t h e p o w e r
duct.
TM5805-285-15-34
F i g u r e 3 7 . Power and signal entrance box, rear view.
e. Connect the wires to the replacement
component.
f. Replace the cover on the power duct.
g. Replace the fluorescent lamp and light
shield (para 37a(4) through (6)).
53. Removal and Replacement of 26-Pair
Cable Receptacle
a. Removal.
(1) Remove the screws that fasten the
cover to the power entrance panel
(fig. 14) and remove the cover.
(2) Remove the mounting screws that
secure the insert clips (fig. 37 and
38).
(3) Unfasten the cable clip nearest the
26-pair cable receptacle mounting.
(4) At the power and signal entrance
panel, remove the 26-pair cable receptacle cover.
(5) Lift the receptacle insert (fig. 38)
from the front of the 26-pair
cable receptacle housing.
(6) Tag and unsolder the wires from
the receptacle insert.
51
F i g u r e 3 8 . f2rI1510 roceptrwl#, 86-pdr, pwtffllly dwaaaembled.
b. Replacement.
( 1 ) Connect the cable wires to the replacement receptacle insert (fig. 39).
b. The exterior skin of the shelter is susceptible to puncturing or gouging during the
loading and transportation procedures. Use
Patch Kit, Shelter, Electrical Equipment
(Federal stock No. 5410-783-6250) to repair
the roof or sides of the shelter as described in
the instructions with the patch kit and given
below.
(1) Use emery cloth, sandpaper, a knife,
or scraper and remove all paint or
foreign matter within a 3-inch radius
around the hole to be patched. Do not
touch the cleaned area with hands or
dirty rags.
(2) If the insulation has been gouged
out, fill the hole with clean noncombustible material, if possible. D o n o t
use the glass cloth for this purpose.
(3) Cut out a piece of glass cloth that
will extend 2 inches beyond the edges
of the hole to be repaired.
Be extremely careful
Caution:
when connecting and soldering wires.
Excessive heat or pressure will damage the insert.
(2) Carefully place the insert in the 26pair cable receptacle housing, (fig.
38).
Caution: Be careful not to damage the wires when replacing screws
or when taking up slack in the 26pair cable.
(3) Replace the insert clip and tighten
the mounting screws (a(2) above).
(4) Fasten the cable clip (a(3) above).
(5) Replace the power and signal entrance box panel cover and the 26pair receptacle cover.
54. Shelter Maintenance
a. T h e m a i n t e n a n c e o r r e p a i r o f t h e S 184/MSC-32 racks, frames, brackets, and assorted hardware is accomplished by removing
and replacing screws or bolts. When any exterior component of the shelter is replaced,
be sure the gasket is adequately sealed to the
shelter to prevent leakage. The responsibilities
for shelter maintenance are listed in the maintenance allocation chart (appx II).
52
TM5805-285-15-41
Figure 39.
Warning: Resin No. 797 and curing
agent No. 237 are harmful to the skin.
Wash thoroughly with water any area
of the body that may have come in
contact with the liquid resin or curing agent.
(4) Pour 3 ounces of resin No. 797 for
each square foot of surface area to
be covered into the mixing cup provided. Shake the can thoroughly before pouring out the resin. Temperature and climate will determine the
quantity of curing agent and cold
weather promoter to be added to the
resin. Use the eye dropper and prepare the mixture as follows:
( a ) For temperatures above 55°F, fill
the eye dropper to the red line
with curing agent No. 237. Add
the curing agent to the resin and
mix thoroughly.
For temperatures between 20° and
55°F, fill the eye dropper to the
red line with curing agent No. 237.
Fill the eye dropper to the halfway mark with cold weather promoter No. 347. Add the cold
weather promoter to the combined
curing agent and resin and mix
thoroughly.
For temperatures below 20°F, fill
the eyedropper to the red line with
curing agent No. 237; add the curing agent to the resin and mix
thoroughly. Fill the eye dropper to
the red line with cold weather
promoter No. 347. Add the cold
weather promotor to the combined
curing agent and resin and mix
thoroughly.
Use the spatula (or the brush in
hard-to-reach areas or when the temperature is above 55°F) and spread
a liberal coating of the prepared mixture over the surface to be patched.
Place the glass cloth ((3) above)
over the coating and press it lightly
with the applicator. Spread a second
liberal coating of the mixture over
the glass cloth; work from the center
of the patch towards the edges.
( 6 ) Examine the patch to see that the
edges are flat and firmly embedded
in the mixture. Be sure the patch is
completely covered by the mixture.
Prepare and apply an additional mixture, if necessary.
Note. ~0 elera& entirn~ durim~ dd
wemtkr, beat the patch with warn, dry air or
radiant heat. Do not we ma opm flmme.
Depending on the temperature and
drying conditions, the patched surface my be sanded and painted
within 4 to 24 hours after application of the patch. After the mixture
in the cup and on the spatula has
hardened, flex the cup and the spatula to crack the mixture. Clean the
cup and spatula and store them for
future use. Discard the used brush;
recap and store the containers.
Caution: Storage life of the patch
kit materials is severely limited by
heat; recap the containers tightly
and store them in a cool, dry place.
53
CHAPTER 5
THEORY
55. Signal Circuits
(fig. 42)
a. SB-22(*)/PT Circuits. The external circuits to the SB-22(*)/PT connect to the SIGNAL 1 26-pair cable receptacle J1 in the
power and signal entrance box (pairs 1
through 12) and the binding posts pairs in the
binding post signal entrance box (pairs 1
through 12). Inside the shelter, the circuits
connect to the SB-22(*)/PT through signal
duct wiring, the SB-22/PT cable stub, and the
LINES SB-22/PT jacks No. 1 through 12.
b. TH-5/TG Circuit. The external circuits
to the TH-5/TG connect to the SIGNAL 1 26pair cable receptacle J1 in the power and signal entrance box (pairs 13, 14, and 15) and
the binding posts pairs in the binding post
signal entrance box (pairs 13, 14, and 15).
Inside the shelter, the circuits connect to the
TH–5/TG’s (No. 1, 2, and 3) through signal
duct wiring, and the LINES TH-5/TG (13,
14, and 15) jacks to the TH-5/TG 2W binding posts. The TH-5/TG loop circuits are
patched to the teletypewriter circuits ( e
below).
c. Spare Lines Circuits. The external circuits to the spare lines connect to the SIGNAL 1 26-pair receptacle J1 in the power and
signal entrance box (pairs 16 through 21) and
the binding posts pairs in the binding post
signal entrance box (pairs 16 through 21).
Inside the shelter, the circuits connect to the
LINES SPARES jacks No. 16 through 21.
d. TA-312/PT Circuits. The external circuits to the TA-312/PT’s connect to the
PHONE 1 through PHONE 4 binding posts in
the power and signal entrance box (pairs 1
through 4) or to the SIGNAL 1 26-pair receptacle J1 in the power and signal entrance box
(pairs 22 through 25). Inside the shelter, the
circuits connect to the PHONE 1 through
54
PHONE 4 jacks (Jl, J3, J5, and J7). The
TA-312/PT’s are connected to these jacks.
e.
TT-4(*)/TG
and
TT-76(*)/GGC
Circuits. The send, receive, and transmitter distributor circuits of the TT-4(*)/TG and the
TT-76(*)/GGC are connected to the associated jacks in the teletypewriter patch panel.
(1) For teletypewriter transmission, the
patch panel TT-4A/TG #l and TT4A/TG #2 SEND jacks, and the TT76/GGC TR and TD jacks are
patched to the TH-5/TG SEND
j a c k s (b a b o v e ) o r t h e s p a r e l i n e s
jacks (c a b o v e ) .
(2) F o r t e l e t y p e w r i t e r r e c e p t i o n , t h e
patch panel TT-4A/TG #1, TT-4A/
TG #2, and TT-76/GGC REC jacks
are patched to the TH-5/TG REC
j a c k s (b a b o v e ) o r t h e s p a r e l i n e s
jacks (c a b o v e ) .
56. Ac Power Circuits
(fig. 41)
Nohr. The function of each switch and indicator in the
S-1134/MSC-32 is covered in paragraph 25.
a. Ac Power Distribution.
(1) A c p o w e r i s a p p l i e d t o t h e A N /
MSC -32 through IN POWER 115V
AC receptacle J1 in the power and
signal e n t r a n c e b o x . P a r a l l e l - c o n nected OUT POWER 115V AC receptacle J2 is provided so that another area assemblage may be connected to the AN/MSC-32 power
source.
(2) Ac power from receptacle J1 is applied through the power duct wiring
to MAIN circuit breaker switch CB7
on the power distribution panel. Circuit breaker switches CB1 through
CB6 (parallel-connected) are connected in series with CB7. Wiring to
the equipment and convenience receptacles is distributed through the power duct from circuit breaker switches
CB1 through CB6. Lamp DS7 is connected across the ac input lines to
CB7, and lights when power is applied to the AN/MSC-32. Lamps
DS1 through DS6 are connected
across the circuits controlled by CB1
through CB6, respectively, and light
individually as each circuit breaker
switch is operated to ON.
b. Grounding. The AN/MSC-32 is grounded
to reduce electrical shock hazards. Ground
terminals for the AN/MSC-32 components
are provided inside the S-184/MSC-32.
c. Voltmeter and Ammeter.
(1) Voltmeter Ml is connected across the
ac input circuit after MAIN circuit
breaker switch CB7. It indicates the
voltage applied from the power
source to the AN/MSC-32.
(2) Ammeter M2 is connected to the ac
input circuit through current transformer T1. It indicates the total current being drawn by the operating
components of the AN/MSC-32.
55
CHAPTER 6
SHIPMENT AND LIMITED STORAGE AND DEMOLITION
TO PREVENT ENEMY USE
Section I. SHIPMENT AND LIMITED STORAGE
57. Disassembly of Equipment
Perform the following procedures when the
AN/MSC-32 is moved to a different location
or placed in storage.
a. Operate all ac power switches and circuit
breaker switches to their OFF positions except the LIGHT 1 and LIGHT 2 switches,
circuit breaker switch 1 LIGHTS, and the
MAIN circuit breaker switch.
b. Remove the batteries from the TA-312/
PT, the SB-22 ( * ) /PT, and the hand lantern
for prolonged storage or long-distance shipment.
c. S e c u r e a l l c o m p o n e n t s i n t h e i r c a s e s ,
mountings, or holders.
d. Place all miscellaneous items in the storage drawers and cabinets, and secure the
drawers and cabinets for transit.
e. D i s c o n n e c t t h e f i e l d w i r e s f r o m t h e
PHONE and INTERCOM binding posts in the
power and signal entrance box (fig. 8) and
from the binding posts in the binding post
signal entrance box (fig. 9).
f. Disconnect the 26-pair cable at the power
and signal entrance box and replace the covers
on the receptacles and connectors.
g. O p e r a t e t h e L I G H T 1 a n d L I G H T 2
switches, circuit breaker switch 1 LIGHTS,
and the MAIN circuit breaker switch to OFF.
h. If power was obtained from an adjacent
shelter, disconnect the AN/MSC-32 power
cable from the OUT POWER 115V AC receptacle at the adjacent shelter. Replace the
receptacle and connector cover.
i. If power was obtained from a commercial source, proceed as follows:
(1) Turn off or disconnect the power.
56
(2) Disconnect the power cable connector
from the power cable stub connector.
Replace both connector covers.
(3) Disconnect the power cable stub
from the commercial source and store
it in a storage cabinet.
j. D i s c o n n e c t t h e p o w e r c a b l e f r o m t h e I N
POWER 115V AC receptacle in the power and
signal entrance box and replace the covers on
the receptacle and connector.
k. D i s c o n n e c t t h e g r o u n d s t r a p f r o m t h e
GROUND TERMINAL in the power and signal entrance box. Close and secure the cover
on the power and signal entrance box.
1. Store the round strap in a storage
cabinet.
m. Close and secure the covers on the exhaust blower vents and on the air filter.
n. Remove the ground rod and store it in
the shelter (fig. 14).
o. W i n d t h e p o w e r c a b l e a n d t h e C X –
4566/G on the cable reels and secure the reels
to the floor of the shelter (fig. 15).
p. Recheck the area for any loose items.
Be sure all items are properly stored in the
shelter.
q. Clean the shelter thoroughly and check
to see that the drain plug (fig. 15) is firmly
in place.
r. Close and lock the shelter door.
58. Transportation
The AN/MSC-32 can be transported by
truck or by helicopter. Refer to paragraph 19
for lifting, loading, and unloading instructions.
Caution: When transporting the AN/MSC32 by air, the outside vent covers of the shelter must be opened to equalize the pressure
inside and outside the shelter.
Section II. DEMOLITION OF MATERIEL TO PREVENT ENEMY USE
59. Authority for Demolition
Demolition of the equipment will be accomplished only upon the order of the commander.
The destrution procedures outlined in paragraph 60 will be used to prevent further use
of the equipment.
60. Methods of Destruction
Use any or all of the following methods to
destroy the equipment:
a. Smash. Smash the controls, tubes, coils,
relays, switches, capacitors, transformers, and
meters; use sledges, axes, handaxes, pickaxes,
hammer, or crowbars.
b. Cut. Cut all cables and cords and slash
the wiring on the components; use axes, handaxes, or machetes,
c. Burn. Burn cords and technical manuals;
use gasoline, kerosene, oil, flamethrowers or
incendiary grenades.
d. Bend. Bend panels and cabinets.
Warning: Be extremely careful with explosives and incendiary devices. Use these
items only when the need is urgent.
e. Explode. If explosives are
firearms, grenades, or TNT,
necessary, use
f. Dispose. Bury or scatter the deetroyed
parts in slit trenches or foxholes, or throw
them into streams.
57
APPENDIX I
REFERENCES
AR 320-5
AR 320-50
AR 700-38
DA Pam 108-1
DA Pam 310-4
DA Pam 310-21
FM 21-5
FM 21-6
FM 21-30
SB 11-100-156
TM 11-2138
TM 11-2156
58
Dictionary of United
States Army Terms
Authorized Abbreviations and Brevity
Codes
Unsatisfactory Equipment Report (Reports Control
Symbol CSGLD247(R2))
Index of Army Motion
Pictures, Film
Strips, Slides and
Phono Recording’s
Military Publications:
Index of Technical
Manuals, Technical
Bulletins, S u p p l y
Bulletins, Lubrication Orders, and
Modification Work
orders
Military Publications:
Index of Supply
Manuals; Signal
Corps
Military Training
Techniques of Military Instruction
Military Symbols
Serviceability Standards for Telephone
Set TA-312/PT
Terminal
Box
TAl25/GT; Telephone
Repeating Coil Assembly
TA-145/
GT ;
Maintenance
Kit MX-842/GT;
and
Switchboard
Signal TA-123/GT
Telephone Set TA312-PT
Teletypewriter Sets
AN/GGC-3
and
AN/GGC-3A a n d
Teletypewriter Reperforator - Transmitters TT-76/
TT-76A/
GGC,
GGC, and TT-76B/
(GGC
11-5805-201-12P Operator and Organizational Maintenance Repair Parts
and Special Tools
List
and
Maintenance
Allocation
C h a r t: Telephone
Set TA-312/PT
11-5805-201-35P Field and Depot Maintenance R e p a i r
Parts and Special
Tools List : Telephone Set TA-312/
PT
11-5805-246-10 Operator’s M a n u a 1,
Terminal, Telegraph
TH-5/TG
11-5805-246-12P Operator’s and Organizational M a i n t enance Repair Parts
and Special Tools
List a n d Mainten a n c e Allocation
Chart for Terminal,
Telegraph TH-5/
TG
11-5805-246-20 Organizational Maintenance M a n u a l,
Terminal Telegraph
TH-5/TG
11-5805-246-35P Field and Depot Maintenance R e pa i r
Parts and Special
Tools List: Termi-
TM 11-2225
TM
TM
TM
TM
TM
TM
TM 11-5805-257-12P
TM 11-5805-257-35P
TM 11-5805-262-10P
11-5805-262-12
TM 11-5805-262-20P
TM 11-5805-262-35
TM 11-5805-262-35P
nal, Telegraph TH5/TG
Operator’s and Organizational M a i n t enance Repair Parts
and Special Tools
List and Mainten a n c e Allocation
Chart for Generators, Ringing, Hand
G-42/PT and G42A/PT
Field and Depot Maintenance R e p a i r
Parts and Special
Tools List for Gene r a t or, Ringing,
Hand G-42/PT and
G-42A/PT
Operator’s M a i n t enance Repair Parts
and Special Tools
List for SwitchTelephone,
board,
Manual SB-22/PT
Operator’s a n d Organizational Maintenance Manual,
Switchboards, Telephone, Manual SB22/PT a n d SB22A/PT
Organizational Main
tenance Repair
Parts and Special
Tools List a n d
Maintenance Allocation Chart for
Switchboard, Telephone, Manual SB22/PT
Field and Depot Maintenance M a n u a 1,
Switchboards, Telephone, Manual SB22/PT and SB22A/PT
Field and Depot Maintenance Repair
Parts and Special
Tools List for
Switchboard, Telephone, Manual SB22/PT
TM 11-5815-206-12
Operation and Organizational MainTeletypetenance:
writer S e t AN/
PGC-1 and Teletypewriter TT-4A/
TG and TG-4B/TG
TM 11-5815-206-12P Operator’s and Organizational Maintenance R e p a i r
Parts and Special
Tools List: Teletypewriter Set AN/
PGC-1
Including
Teletypewriers TT4A/TG and TT4B/TG
TM 11-5815-206-35
Field and Depot MainTeletypetenance:
writer S e t AN/
PGC-1 and Teletypewriters TT4A/TG and TT4B/TG
TM 11-5815-206-35P Field and Depot Maintenance R e p a i r
Parts and Special
Tools List: Teletypewriter Set AN/
Including
PGC-1
Teletypewriters TT4A/TG and TT4B/TG
TM 11-5830-221-12
Operator’s and Organizational Maintenance Manual:
Intercommunication
Station LS-147B/
FI
TM 11-5830-221-12P Operator’s and Organizational Maintenance R e p a i r
Parts and Special
Tools Lists: Intercommunication Station
LS-147A/FI
and LS-147B/FI
59
TM 11-5830-221-86
TM 11-5830-221-36P
TM 11-5896-228-16
TM 11-5935-204-15P
TM 11-5935-205-15P
TM 11-5965-207-12P
TM 11-5966-207-861
60
Field and Depot Maintenance Manual:
Intercommunication
Station LS-147B/
FI
Field and Depot Maintenance R e p a i r
Parts and Special
Tools List: Intercommunication StaLS-147A/FI
tion
and LS-147B/FI
Operator’s, Organizational, Field, and
Depot Maintenance
Manual Operations
Center, Communication AN/MSC-31
Operator, Organizational, Field, and
Depot Maintenance
Repair Parts and
Special Tools List
and Maintenance
Allocation C h a r t:
Connector, Plug,
Electrical U186A/G
Operator, Organizational, Field and
Depot Maintenance
Repair Parts and
Special Tools List
and Maintenance
Allocation Chart:
Connector, Receptacla, Electrical U187/G
operator’s Organizational Maintenance
Repair Parts and
Special Tools List
and Maintenance
Allocation Chart
for Handset-Headsets H-81/U and
H-81A/U
Field and Depot Maintenance Repair
Parts and Special
Tools List for
TM 11-6626-274-10P
TM 11-6625-274-12
TM 11-6625-274-20P
TM 11-6625-274-35P
TM 11-5966-224-12P
TM 11-5965-233-12P
Handset-Headset
H-81/U and H81A/U
Operator's Maintenance Repair Parts
and Special Tools
List for Test Sets,
Electron Tube TVTV-7A/U,
7/U,
TV-7B/U, and TV7D/U
Operator’s and Organizational Maintenance Manual:
Test Sets, Electron
Tube TV-7/U, TV7A/U, TV-7B/U,
and TV-7D/U
Organizational Maintenance Repair
Parts and Special
Tools List for Test
Sets, Electron Tube
TV-7/U, TV-7A/U,
TV-7B/U, an
TV-7D/U
Field and Depot Maintenance Repair
Parts and Special
Tools List for Test
Sets, Electron Tube
TV-7/U, TV-7A/U,
and
TV-7B/U,
TV-7D/U
Operator and Organizational Maintenance Repair Parts
and Special Tools
List and Maintenance
Allocation
Chart:
Handsets
H-60/PT and H165/U
Operator and Organizational Maintenance Repair Parts
and Special Tools
List and Maintenance Allocation
Chart: Headset
Microphones H-91,
U and H-91A/U
TM l1-6625-203-12
Operation and Organizational Maint e n a n c e: Multimeter AN/URM105, including Multimeter ME-77/U
TM 11-6625-203-12P Operator’s and Organizational Maintenance R e p a i r
Parts
and
Special
Tools List for Mul-
TM 11-6625-203-35
TM 11-6625-203-35P
timeter AN/URM105
Field and Depot Maintenance: Multimeter AN/URM105 including Multimeter ME-77/U
Field and Depot Maintenance R e p a i r
Parts and Special
Tools List for Multimeter AN/URM105
61
APPENDIX II
MAINTENANCE ALLOCATION
Section I. INTRODUCTION
I. General
a. This appendix assigns maintenance functions and repair operations to be performed
by the lowest appropriate maintenance
echelon.
b. Columns in the maintenance allocation
chart (Section II) are as follows:
( l ) Parts or component. This column
shows the nomenclature or standard
item name. Additional descriptive
data are included only where clarification is necessary to identify the
park Components and parts comprising a major end item are listed
alphabetically. Assemblies and subassemblies are in alphabetical sequence with their components listed
alphabetically immediately below the
assembly listing.
( 2 ) Maintenance function. T h i s c o l u m n
indicates the various maintenance
functions allocated to the echelon
capable of performing the operations.
( a ) Service. To clean, to preserve, and
to replenish fuel and lubricants.
( b ) Adjust. To regulate periodically to
prevent malfunction.
(c) I n s p e c t . T o v e r i f y s e r v i c e a b i l i t y
and to detect incipient electrical o r
mechanical failure by scrutiny.
( d ) Test. To verify serviceability and
to detect incipient electrical or mechanical failure by use of special
equipment such as gages, meters,
etc.
(6) Replace. To substitute serviceable
assemblies,
subassemblies
a n d
parts for unserviceable components.
( f ) R e b u i l d . To restore an item to a
standard as near as possible to
62
original or new condition in ap
pearance, performance, and life expectancy. This is accomplished
through the maintenance technique
of complete disassembly of the
item, inspection of all parts or components, repair or replacement of
worn or unserviceable elements using original manufacturing tolerances and/or specifications and
subsequent reassembly of the item.
( g ) Repair. To restore an item to serviceable condition through correction of a specific failure or unserviceable condition. This function
eludes but is not limited to,
specting, cleaning, preserving, a justing, replacing, welding, riveting, and straightening.
(3) 1 s t , 2 d , 3 d , 4 t h , 5 t h e c h e l o n . T h e
symbol X indicates the echelon responsible for performing that particular maintenance operation, but
does not necessarily indicate that repair parts will be stocked at that
level. Echelons higher than the echelon marked by X are authorized to
perform the indicated operation.
( 4 ) Tools required. This column indicates
codes assigned to each individual tool
equipment, test equipment, and maintenance equipment referenced. The
grouping of codes in this column of
the maintenance allocation chart indicates the tool, test, and maintenance equipment required to perform
the maintenance function.
( 5 ) Remarks. Entries in this column will
be utilized when necessary to clarify
any of the data cited in the precedi
columns.
c. Columns in the section allocation of tools
for maintenance functions (Section II) are as
follows :
( 1 ) Tools required for maintenance functions. This column lists tools, test,
and maintenance equipment required
to perform the maintenance functions.
( 2 ) 1st, 2d, 3d, 4th, 5th echelon. A dagger (†) symbol indicates the echelons
allocated the facility.
( 3 ) Tool Code. This column lists the tool
code assigned.
( 4 ) R e m a r k s . Entries in this column are
used to clarify data in the other
columns.
2. Maintenance by Using Organizations
When this equipment is used by signal service organizations organic to theater headquarters or communication zones to provide theater
communications, those maintenance functions
allocated up to an including fourth echelon ara
authorized to the organization operating this
equipment.
3. Mounting Hardware
The basic entries of this maintenance allocation chart do not include mounting hardware
such as screws, nuts, bolts, washers, brackets,
clamps, etc.
63
Section II.
64
65
6 6
Section III.
67
APPENDIX III
BASIC ISSUE ITEMS LIST
Section I. INTRODUCTION
I. General
This appendix lists items supplied for initial
operation and for running spares. The list includes tools, accessories, parts, and material
issued as part of the major end item. The list
includes all items authorized for basic operator maintenance of the equipment. End items
of equipments are issued on the basis of allowances prescribed in equipment authorization tables and other documents that are a
basis for requisitioning,
2. Columns
a. Source, Maintenance, and Recoverability
Code. Not used.
b. Federal Stock Number. This column lists
the 11-digit Federal stock number. In the
absence of a Federal stock number, an interim
number, for example ††L8Ra41C-12 in the description column, indicates that a Federal
stock number is being processed for assignment. The L number may be used in emergencies to identify items.
68
c. Designation by Model. Not used.
d. Description. Nomenclature or the standard item name and brief identifying data for
each item are listed in this column, When
requisitioning, enter the nomenclature and description,
e. Unit of Issue. The unit of issue is the
supply term by which the individual item is
counted for procurement, storage, requisitioning, allowances, and issue purposes.
f. Expendability. Expendable items are i n dicated by the letter X; nonexpendable items
are indicated by NX.
g. Quantity Authorized. Under “Items Comprising an Operable Equipment,” the column
lists the quantity of items supplied for the initial operation of the equipment, Under “Running Spares and Accessory Items, ” the quantities listed are those issued initially with the
equipment as spare parts. The quantities are
authorized to be kept on hand by the operator
for maintenance of the equipment.
h. Illustrations. Not used.
Section II.
69
70
71
7 2
TM 5805-285-15-44
Figure 40.
INDEX
Paragraph
Page
21
7a
26
20
7a
29
56
46,47
59
30, 31
6-8
35
30
6-8
37,38
54, 55
44,45
57
21-23
8i
4
47
10
35
Paragraph
Page
7a
6-8
7b
7c
7e
7g
7d
52
45b
8
8
8
8
8
50,51
44
30-32
12,13
4
44,45
20
40,41
25d
8a
27a
49
29b
26
35
34
10
36
47,48
37,38
35
40,41
25a
26
48b
22
28a
2
33
35
45
31
37
3
25c
39
8c
27b
50
29b
34
48
10
36
49,50
37,38
11-16
7,8
11-16
17
5
4
20-25
6-19
20-25
25-27
5,6
4
52
51,52
2e
2c
3
3
2b
2a
3
8
20
21
22, 23
25
30
30,31
31,32
33-35
30
20
39
30
28b
37
32
59,60
39,40
57
15
6
8e
8i
8d
8a
8c
6
10
12,18
10
10
10
9
24-25
25
20
14
11
24
20-23
8b
7a
7a
7a
10
6-8
6-8
6-8
12
15
16a
13
17
10
23-24
24,25
25
24
25-27
20
7f
8
37
36
42,43
42
73
Paragraph
Page
25b
7a
26
19
34
33,34
6-8
35
27-30
40
Daily preventive
32
Equipment performance checklist -35
Forms and records -------------2c
General
-------------------------30
Lubrication ---------------------34
Monthly preventive ---------------------34
Running
spares
---------------------Appx
III
Tools and materials -----------------------31
Troubleshooting instructions --------46,47
Weekly preventive --------------------33
Manual:
39,40
40,41
3
39
40
40
68-72
39
44, 45
40
Comments -----------------------Scope ----------------------------------------Materials, maintenance --------------Meters, replacement -----------------------------Microswitch, replacement ----------------------Monthly preventive maintenance ------
2e
I
31b
48b
51b
34
3
3
39
46,47
50
40
Neon lamps, removal and replacement -
37c
43
Energizing ac circuits -----------Patching ------------------------Procedures ------------------------Stopping ------------------------Under adverse climatic conditions -
26
27h
27
29
28
35
37
36,37
37,38
37
Patching procedure ---------------------------
27h
37
8i
56
21
4
12, 13
54,55
30,31
4
22,23
7a
31,32
6-8
25a
7a
26
48
51a
3
33
6-8
35
45-47
50
3
2e
2c
3
3
2b
2a
3
3
Lighting:
Controls -------------------------Description ----------------------Operation -----------------------Loading AN/MSC-32 -----------------------Lubrication -----------------------Maintenance:
Operation:
Power:
Cables, description --------------Circuits, theory ------------------Connections ---------------------Consumption - - - - - - - - - - - - - - - - - - - - Power and signal entrance box:
Connections ---------------------Description - - - - - - - - - - - - - - - - - - - - - Power distribution panel:
Controls and instruments ---------------Description - - - - - - - - - - - - - - - - - - - - - Operation -----------------------Repairs
-------------------------Power duct switch, replacement ------Purpose and use ---------------------Records and forms:
Comments on manual -----------Preventive maintenance forms ------Report of damaged or improper
shipment ----------------------Unsatisfactory equipment report -Removal and Replacement:
Electric heater and parts --------Exhaust blower and parts -------74
38,39 43,47,48
39,50 43,49,50
Paragraph Page
Fluorescent light fixture parts ------Hand lantern parts -------------Intercommunication Station
LS-147(*)/FI -----------------Lamps - - - - - - - - - - - - - - - - - - - - - - - - - - Power distribution panel parts ---Reperforator-Transmitter, Teletypewriter TT-76(*)/GGC --------Switchboard, Telephone, Manuel
SB-22(*)/PT ----------------------Switches -----------------------------Telephone Set TA-312/PT -------Teletypewriter TT-4(*)\TG -----Terminal, Telegraph TH-5/G -----
36
37,5242,50
*
40
37
48
43
42,43
45-47
44
44
38
51
42
43
45
43
50
43
44
44
Repair:
Electric heater ------------------Exhaust blower -----------------Fluorescent lamp fixtures -------Power distribution panel --------Shelter, Electrical Equipment
S-184/MSC-32 ----------------Switches ------------------------26-,pair cable receptacle ---------Running spares ----------------------
9
50
52
48
47,48
49,50
50,51
45-47
54
51
53
5b
52,53
50
51,52
5,6
Scope -------------------------------Securing AN/MSG-32 to truck -------
1
19b
3
29
Shelter, Electrical Equipment
S-184/MSC-32:
Circuit connections -------------Components -----------------------Controls and instruments --------Description -------- -----------------------Destruction ---------------------Disassembly of equipment -------Installation ---------------------Operating procedures -----------Operator’s maintenance ----------Repair
--------------------------Securing to truck ---------------Siting
---------------------------Stopping procedures -------------Storage
-------------------------Transportation - - - - - - - - - - - - - - - - - - Uncrating ----------------------------
22
5b
25
7a
59,60
57
19
27
3-45
54
19
18
29
57
58
10
33-35
6-8
57
56
27-30
36,37
39,44
52,53
27-30
27
37,38
56
56
20
Signal circuits:
Connections ---------------------Testing - - - - - - - - - - - - - - - - - - - - - - - - - Theory
--------------------------Siting
-------------------------------Stopping procedures - - - - - - - - - - - - - - - - - Storage
-----------------------------Switchboard, Telephone, Manual
SB-22(*)/PT:
Description - - - - - - - - - - - - - - - - - - - - - Installation and connection ------Removal and replacement - - - - - - - Switches:
Controls and instruments -------Removal and replacement --------
22
17
55
18
29
57
31
25-27
54
27
37,38
56
7b
11
41
8
20-23
43
25
51
33-35
Q
Page
Paragraph
Technical characteristics of
AN/MSC-32 - - - - - - - - - - - - - - - - - - - - - - Telephone Set TA-312/PT:
D e s c r i p t i o n -----------------------Installation and connection --------Removal and replacement - - - - - - - Testing, installation - - - - - - - - - - - - - - - - - TH-5/TG subdistribution panel:
4
4
7c
12
42
17
8
23,24
43
25-27
Paragraph
Connections -------------------27d
Controls
------------------------25i
Description - - - - - - - - - - - - - - - - - - - - - 8h
Operation - - - - - - - - - - - - - - - - - - - - - - - 27d
Theory:
Ac power - - - - - - - - - - - - - - - - - - - - - - - 56
Signal circuits - - - - - - - - - - - - - - - - - - 55
Tools and test equipment ---------Appx II
Page
36
35
12
36
54,55
55
62,67
75
PIN: 019128-000
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