Dresser Series 7000 Andco Series 7000 Acutator Installation, Operation and Maintenance Manual

Andco Actuators
Andco Series 7000 Actuator
Posi-Tork Acme Screw
Posi-Tork Ball Screw
Instruction Manual
Table of Contents
Introduction
Introduction and General Information........................................... 2
Storage Requirements.......................................................................... 2
Installation
Installation Requirements ................................................................... 3
Motor Operation...................................................................................... 4
Geared Position Limit Switch Operation........................................ 4
Thrust Limit Switch Operation........................................................... 6
Maintenance
Disassembly and Reassembly of
Model 7000 Posi-Tork Actuators........................................................ 9
Electric Brake............................................................................................11
Brake Wear Adjustment.......................................................................12
Manual Brake Release...........................................................................12
Brake Removal and Replacement....................................................12
Geared Position Limit Switch Adjustment.................................. 13
Thrust Limit Switch Setting Procedure......................................... 14
Acceptable Lubricants......................................................................... 15
Technical Specifications.......................................................................23
NOTICE
The information contained in this manual is essential
to safe, successful, long term operation of your Andco
7000 linear actuator. Read and follow the requirements
concerning storage, installation and adjustments. Failure
to do so could void the warranty covering your actuator.
AVIS
Les renseignements contenus dans ce manuel sont essentiels
au fonctionnement sûr, efficace, durable de votre actionneur
linéaire Andco 7000. Lisez et respectez les exigences relatives au
stockage, à l’installation et aux réglages. Le non-respect de ces
exigences peut annuler la garantie couvrant votre actionneur.
Figures
Fig. 1 - Acme Screw Actuator Parts Drawing............................. 5
Fig. 2 - Ball Screw Actuator Drawing............................................ 7
Fig. 3 - Electric Brake Drawing..................................................... 12
Fig. 4 - Geared Position Limit Switch Parts Drawing............ 13
Fig. 5 - Thrust Limit Switch Parts Drawing............................... 15
Fig. 6 - Manual Handwheel Clutch Assembly
Parts Drawing..................................................................... 16
Fig. 7 - Gear Box Assembly Parts Drawing............................... 20
Fig. 8 - Trunnion and Clevis Mounting...................................... 21
Fig. 9 - Face/Flange Mounting...................................................... 21
Optional Equipment
Dust-Ignition Proof Enclosure.......................................................... 16
Gear Driven Potentiometer............................................................... 16
Limit Switch Compartment Heater................................................ 16
Integral Motor Starter.......................................................................... 16
Manual Handwheel Clutch Assembly........................................... 17
Disassembly & Reassembly of Gear Box Assembly.................. 19
Trunnion and Clevis Mounting Information.............................. 21
Face/Flange Mounting Information.............................................. 22
Tables
1 - Acme Screw Actuator Parts List................................................... 6
2 - Ball Screw Actuator Parts List....................................................... 8
3 - Electric Brake Parts List.................................................................. 12
4 - Geared Position Limit Switch Parts List.................................. 14
5 - Thrust Limit Switch Parts List...................................................... 14
6 - Lubricant Required per Actuator Size and Stroke.............. 15
7 - Standard and Substitute Lubricants........................................ 15
8 - Manual Handwheel Clutch Assembly Parts List................. 17
9 - Gear Box Assembly Parts List.......................................................20
10A - Trunnion Mounting....................................................................21
10B - “T” Dimensions.............................................................................21
11A - Face/Flange Mounting.............................................................22
11B - “T” Dimensions.............................................................................22
12 - HIPOT Testing Specifications.....................................................22
Introduction
This manual describes the general operating principles of the
Model 7000 Posi-Tork Linear Actuators. Information is also
provided for installation, operation, servicing, and storage of
the actuator. All the information contained herein is essential
to safe, successful long term actuator operation. Please carefully
read and thoroughly understand the content of this manual.
Failure to follow the instructions provided could void the
actuator’s warranty. If the answers to your questions are not
contained in this manual, please contact Dresser Natural Gas
Solutions toll free at 1-800-945-9898. Be sure to mention the
model and serial number when requesting information.
Intent of Usage
The 7000 Posi-Tork Linear Actuators are completely
self-contained, electro-mechanical devices. These actuators,
designed and fabricated for dependable long-life operation,
are used for positioning, automation of material handling or
flow control equipment.
The actuator is powered by a high starting torque, low
inertia electric motor connected to a drive screw through a
set of spur gears.
Upon stroke completion, a gear driven position limit switch
interrupts power to the motor. If actuator movement is
prevented at any point during travel due to an external
mechanical overload, a thrust switch will interrupt power to
the motor.
CAUTION
LIFTING HAZARD
Single person lift could cause injury.
Use assistance when moving or lifting.
ATTENTION
RISQUE LIÉ AU LEVAGE
Le levage de l’unité par une seule personne est dangereux.
Demandez de l’aide lors du déplacement ou du levage de l’unité.
Model Number Identification
Each actuator is identified by model, serial and order
number on the name plate. The name plate is located on the
limit switch compartment cover. Use all three (3) numbers
when ordering parts and making inquiries.
Repair of any actuator is to be done only by an authorized
service center or by individuals certified by Andco
Actuators. Only routine maintenance may be performed by
unauthorized personnel.
WARNING
PPE
Approved Personnel Protective
Equipment for the site must
be worn.
Storage Requirements
1.
Actuators should always be stored in a clean, dry
environment.
2.
If outdoor storage cannot be avoided, the actuator
must be stored high enough to avoid immersion in
snow or water.
3.
If installed, the optional compartment heaters should
be temporarily wired and energized if the actuator is to
be stored in a damp location.
4.
All covers must remain securely fastened in place.
5.
All pipe plugs must remain tightly in place.
6.
The storage location should be selected so the actuator
is not exposed to mechanical damage.
7.
For extended storage (over 3 months outdoors or
6 months indoors), desiccant bags must be placed
inside of the electrical compartments. Tags must
be attached to the outside of the compartment
covers instructing removal of the bags before start of
operation.
Lifting Instructions
1.
Lift 7000 Series Actuator at body tube and motor
housing.
2.
Follow applicable safety guidelines when lifting or
moving actuator.
2 | Dresser Natural Gas Solutions
AVERTISSEMENT
EPI
Il convient de porter un
équipement de protection
individuelle sur le site.
WARNING
GROUNDING LUG
Unit must be grounded with
minimum size 10 AWG wire.
AVERTISSEMENT
PATTE DE MISE À LA TERRE
L’unité doit être mise à la terre
avec un fil de calibre 10 au moins.
CAUTION
BURN HAZARD
Possible hot surface. Keep hands
clear of surface. Allow surface
to cool before performing any
maintenance.
ATTENTION
RISQUE DE BRÛLURE
La surface risque de devenir
chaude. Éloignez vos mains de la
surface. Laissez refroidir la surface
avant les travaux de maintenance.
Installation
Installation Requirements
1.
Mount the actuator with the limit switch compartment
oriented either vertically or horizontally. This prevents
the lubricant from pressing against the switch seals.
2.
To prevent premature wear of the drive nut, extension
rod seal, and wiper, ensure that alignment between the
actuator mounting support and the driven equipment
does not exert side load on the extension rod at any
point throughout the full stroke of the actuator.
3.
Before operating the actuator, make sure all the
mounting attachments and driven equipment are
properly secured and all the covers are properly
tightened.
4.
The actuator must be installed and wired in accordance
with the most current National Electrical Code.
5.
Route the electrical conduit into the actuator to prevent
internal condensation from running into the limit
switch compartment.
6.
Verify proper motor rotation relative to the limit switch.
The motor rotation may be reversed, if necessary, by
reversing the motor lead connections. (Refer to Geared
Position Limit Switch Adjustment instructions on page
13 and the electrical wiring diagram provided with the
actuator).
7.
Keep the position and thrust switch compartments
dry and clean.
WARNING
MOVING PARTS
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
AVERTISSEMENT
PIÈCES MOBILES
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
CAUTION
SERVICE PERSONEL
Service operators must be licensed/trained and authorized before
being allowed to perform maintenance on the actuator.
ATTENTION
PERSONNEL DE MAINTENANCE
Les opérateurs de maintenance doivent être licenciés/formés et
agréés avant de pouvoir effectuer des travaux de maintenance sur
l’actionneur.
CAUTION
VOLTAGE SUPPLY
Verify that the supply voltage to the actuator matches the voltage
on the nameplate on the limit switch compartment cover (51).
ATTENTION
SOURCE DE TENSION
Vérifiez que la source de tension de l’actionneur correspond à
la tension indiquée sur la plaque signalétique du couvercle du
compartiment interrupteur de fin de course (51).
CAUTION
CONDUCTOR TEMPERATURE RATING
All conductors used for field wiring connections to the actuator
shall carry a rating for a minimum temperature of 90°C.
ATTENTION
TEMPÉRATURE NOMINALE DES CONDUCTEURS
Tous les conducteurs utilisés pour les raccordements du câblage sur
site de l’actionneur doivent présenter une température nominale
minimum de 90 °C.
Andco Series 7000 IOM NGS.IPG.0032 | 3
WARNING
Disconnect all electrical power before removing covers of either
position or thrust switch compartments.
AVERTISSEMENT
Débranchez tous les câbles électriques avant d’ôter les couvercles des
compartiments des commutateurs de position ou à pousser.
8.
9.
Verify the setting of the position limit switches. Readjust
the geared position limit switches before operating the
actuator if necessary. (Refer to Geared Position Limit
Switch Adjustment instructions on page 13 and the
electrical wiring diagram provided with the actuator).
Keep the geared position limit switch contacts clean.
Use CRC Lectra Clean® or other suitable solvent on a lint
free cloth.
10. Do not use an abrasive cloth or paper to clean the silver
contacts on the position limit switches.
WARNING
DO NOT defeat the purpose of the thrust switch by jumping, bypassing or disconnecting the switch connection wiring (wire numbers
17, 17A, 18 or 18A per electrical wiring diagram provided with the
actuator. This could cause serious damage to the actuator or the
driven equipment.
AVERTISSEMENT
NE portez PAS atteinte à l’objet du commutateur à pousser en faisant
sauter, en contournant ou en débranchant le câblage des commutateurs
(numéros de fil 17, 17A, 18 ou 18A selon les schémas de câblage fourni avec
l’actionneur. Vous risqueriez d’endommager gravement l’actionneur ou
l’équipement entraîné.
11. Do not hammer or gouge the outside surface of
the extension rod. This may damage the plating
integrity or cause surface irregularities which can
damage the rod seals.
12. Keep the extension rod and clevis pin clean and
lubricated.
13. Dust-ignition proof actuators must have all covers
secured before the electrical circuits are energized.
14. Dust-ignition proof actuators must have the
grounding lug connected to a suitable grounding
system prior to operation.
CAUTION
VOLTAGE SUPPLY
Verify that the supply voltage to the actuator matches the voltage
on the nameplate on the limit switch compartment cover (51).
ATTENTION
SOURCE DE TENSION
Vérifiez que la source de tension de l’actionneur correspond à
la tension indiquée sur la plaque signalétique du couvercle du
compartiment interrupteur de fin de course (51).
4 | Dresser Natural Gas Solutions
Motor Operation
The electric motor (30) has a pinion mounted on it’s
shaft. This pinion (40) engages the drive gear (41) which
is mounted on the end of the drive screw (45). The drive
screw has external Acme type threads and is engaged in the
internal threads of the mating drive nut (2). Refer to Figure 1,
page 5, and Table 1, page 6.
The drive nut is held from rotating by four tie rods (48).
Rotation of the drive screw causes an axial movement
of the drive nut.
A tubular extension rod (47) is fastened on one end of the
drive nut and is extended or retracted with the axial
movement of the drive nut.
The drive screw is supported by two ball bearings (13),
which are spaced apart by multiple belleville springs (33).
The Belleville springs are preloaded and prevent any axial
movement on the drive screw. An external driven load is
fastened to the extension rod by the clevis (8) and clevis
pin (10). When the driven force exceeds preload force of
the belleville springs, the drive screw moves axially. Axial
movement of the drive screw is translated by the thrust
switch sleeve (5) to rotational movement of the lever of
thrust switch (66). The thrust switch will interrupt the electric
circuit to the motor. The extend and retract thrust switches
are independent of each other, allowing for the actuator to
be backed out of a jam.
WARNING
MOVING PARTS
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
AVERTISSEMENT
PIÈCES MOBILES
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
Geared Position Limit Switch Operation
For most applications, the geared position limit switches
control the actuator position by interrupting the motor
control circuit at the end of the extend and retract strokes.
Rotation of the drive screw is transmitted through the
helical gear (6) to the geared position limit switch. The limit
switch assembly has two independently adjustable trip
points intended to control the end position of the extend
and retract strokes. An optional geared position limit switch
assembly with four independently adjustable trip points
provides two intermediate trip points for signal indication
or electrical interlocking with other equipment requiring an
electrical signal related to the intermediate positions of the
extend or retract strokes.
Figure 1 - Acme Screw Actuator Parts Drawing
Andco Series 7000 IOM NGS.IPG.0032 | 5
82
80
83
100
82
83
81
80
30
11
29
65
60
2
55
53 54
52
51
56 57
59
1
132
67 68
61
66
5 6 16 45 17 46
58
29
64 21 15 41 23 95 31 33 34 13 4
58
29
90
40 101 25 26
12
69 70
85
86
85
17
7
9
27
20 22 48
3 18 19 24
106
89
47
10
28
8
Table 1 - ACME Screw Actuator Parts List
Item
Description
1
Body Housing
2
Drive Nut
3
End Cap
4
Item
Item
Description
Thread Seal or
O-ring & Washer
47
Extension Rod
21
Slotted Hex Nut
48
Tie Rod
Bearing Sleeve
22
Flexlocnut
51
Limit Switch
Compartment Cover
5
Thrust Switch
Sleeve
23
Pipe Plug
52
24
6
Helical Gear
Hex Head Cap
Screw
Gear Limit Switch
Assembly
53
7
Bushing for End Cap
25
8
Clevis
Hex Head Cap
Screw
Socket Head
Cap Screw
54
Lockwasher
9
Jam Nut
26
Lockwasher
55
10
Clevis Pin
27
Cotter Pin
11
Nameplate
28
Flat Washer
12
Motor Gasket
29
Drive Studs
30
Motor
31
Bearing Plate
33
Belleville Springs
34
Thrust Limit Sleeve
40
Motor Pinion
41
Drive Gear
45
Drive Screw
46
Body Tube
13
Ball Bearing
15
Key (for drive gear)
16
Key (for helical gear)
17
O-ring
18
Polypak Rod Seal
19
Rod Wiper
20
Description
The geared position limit switch assembly is driven by
the direct gearing on the drive screw and synchronized
at all times with linear movement of the extension rod.
After initially setting the extend and retract trip points,
as determined by the position of the extension rod, the
switches will trip repeatedly at these same points.
Refer to the Geared Position Limit Switch Adjustment
instructions on page 13.
Thrust Limit Switch Operation
The factory preset thrust switch assembly protects the
actuator and driven equipment from mechanical overloads.
The thrust switch has a dial with pointer type settings which
can be field adjusted to increase or decrease the thrust
load. The higher the number setting on the thrust switch,
the higher the external thrust force the switch will sense to
interrupt the motor circuit.
Refer to the Thrust Limit Switch Setting Adjustment
instructions on page 14.
6 | Dresser Natural Gas Solutions
Item
Description
67
Socket Head
Machine Screw
68
Internal Tooth
Lockwasher
69
Socket Head Cap
Screw
70
Lockwasher
80
Knife Mounting
Bracket
O-Ring
81
Trunnion Pin
56
Socket Head
Cap Screw
82
Flat Washer
83
Cotter Pin
57
Internal Tooth
Lockwasher
85
Body Tube Adapter
58
Warning Plate
86
Dowel Pin
59
Pipe Plug
89
Socket Head Cap
Screw
60
Limit Switch Gasket
90
61
Thrust Switch Gasket
Potentiometer Sub
Assembly
64
Cotter Pin
95
65
Thrust Switch
Compartment Cover
Low Head Socket
Screw
100
Motor Pipe Plug
66
Thrust Switch
Assembly
101
Flexlocnut
106
O-Ring
132
Set Screw
Figure 2 - Ball Screw Actuator Drawing
Andco Series 7000 IOM NGS.IPG.0032 | 7
134
133
40
30
64
21
12
41
15
26 25 101
58
5
6
23
16 71 72
61
51
59
132
67 68
42
1
17
60 46 2
53 54
66
55
13
65
31
33 34
29
56
35
29 11
58
52
4
69 70
57
90
26 36 32
88
or
74 76 73 45 102 47 85 89 62
86
7
18
19
20 22 48
78 79 84
17
85 or 88
3
24
27
9
28
10
8
Table 2 - Ball Screw Actuator Parts List
Item
Description
Item
Description
Item
Description
Item
Description
23
Pipe Plug
(for housing)
51
Limit Switch
Compartment Cover
68
Internal Tooth
Lockwasher
24
Hex Head Cap Screw
52
69
25
Hex Head Cap Screw
Gear Limit Switch
Assembly
Socket Head
Cap Screw
26
Lockwasher
53
Socket Hd Cap Screw
70
Lockwasher
27
Cotter Pin
54
Lockwasher
71
Oil Seal Bushing
28
Flat Washer
55
O-Ring
72
Oil Seal
29
Drive Studs
56
73
Ball Nut Coupling
30
Motor
Socket Head
Cap Screw
Coupling Stop
Bearing Plate
Internal Tooth
Lockwasher
74
31
57
76
Socket Set Screw
Nameplate
32
Stud
58
Warning Plate
78
Bearing Cartridge
12
Motor Gasket
33
Belleville Springs
59
79
Bearing
13
Ball Bearing
34
Thrust Limit Sleeve
Pipe Plug
(conduit opening)
84
Flexlocnut
15
Key (for drive gear)
35
Support Washer
60
Gasket
85
Body Tube Adapter
16
Key (for helical gear)
36
Hex Nut
61
Gasket
86
Dowel Pin
17
O-ring (for body
tube)
40
Motor Pinion
62
End Cap Cushion
88
Body Tube Flange
41
Drive Gear
64
Cotter Pin
89
18
Polypak Rod Seal
42
65
19
Rod Wiper
Low Head Socket
Cap Screw
Thrust Switch
Compartment Cover
Socket Head
Cap Screw
90
20
Thread Seal
45
Drive Screw
66
Body Tube
Flexlocnut
Castle Nut
46
107
21
Thrust Switch
Assembly
Potentiometer
Sub Assembly
Extension Rod
67
Socket Head
Cap Screw
Hex Head Cap Screw
Flexlocnut
47
132
22
48
Tie Rod
133
Electric Brake
Housing
134
Brake Assembly
(refer to figure 3)
1
Body Housing
2
Ball Nut
3
End Cap
4
Bearing Sleeve
5
Thrust Switch Sleeve
6
Helical Gear
7
End Cap Bushing
8
Clevis
9
Jam Nut
10
Clevis Pin
11
WARNING
PPE
EPI
Approved Personnel Protective
Equipment for the site must
be worn.
Il convient de porter un
équipement de protection
individuelle sur le site.
CAUTION
ATTENTION
BURN HAZARD
RISQUE DE BRÛLURE
Possible hot surface. Keep hands
clear of surface. Allow surface
to cool before performing any
maintenance.
La surface risque de devenir
chaude. Éloignez vos mains de la
surface. Laissez refroidir la surface
avant les travaux de maintenance.
WARNING
AVERTISSEMENT
MOVING PARTS
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
8 | Dresser Natural Gas Solutions
AVERTISSEMENT
PIÈCES MOBILES
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
CAUTION
and removing lockwashers (26).
LIFTING HAZARD
6.
Single person lift could cause injury.
Use assistance when moving or lifting.
Remove the locknut (101) if the motor pinion (40) is to
be replaced.
7.
With a socket wrench on the locknut (21) turn the drive
screw (45) counterclockwise extending the extension
rod (47) until rotation becomes difficult due to the drive
nut (2) bottoming out against the end cap (3).
8.
Remove the cotter pin (64) and slotted hex nut (21).
9.
Pull out the drive gear (41) and remove the key (15)
from the drive screw.
ATTENTION
RISQUE LIÉ AU LEVAGE
Le levage de l’unité par une seule personne est dangereux.
Demandez de l’aide lors du déplacement ou du levage de l’unité.
Maintenance –
Disassembly and Reassembly of Model 7000
Posi-Tork Acme Screw Unit
WARNING
Disconnect all electrical power before removing covers of either
position or thrust switch compartments.
AVERTISSEMENT
Débranchez tous les câbles électriques avant d’ôter les couvercles des
compartiments des commutateurs de position ou à pousser.
CAUTION
SERVICE PERSONEL
Service operators must be licensed/trained and authorized before
being allowed to perform maintenance on the actuator.
ATTENTION
PERSONNEL DE MAINTENANCE
Les opérateurs de maintenance doivent être licenciés/formés et
agréés avant de pouvoir effectuer des travaux de maintenance sur
l’actionneur.
1.
Remove the position and thrust switch compartment
covers (51) and (65).
2.
Disconnect the leads on the gear position and thrust
limit switches, making sure they are properly marked
for reconnection. Remove the pipe plug (23) on the side
of the housing (1) to vent air into the housing as the
switches are being removed. The geared position limit
switch assembly is mounted by hardware (56 and 57).
The limit switch assembly is removed by rotating the
assembly clockwise approximately 90° while pulling
the assembly up out of the housing. This is required to
remove the switch helical gear input shaft out of mesh
with the helical gear (6) on the drive screw (45). Remove
the o-ring (55). The thrust switch assembly is mounted
by hardware (67 and 68). Remove the thrust switch
assembly. Both switches must be removed to permit
10. Remove the bearing plate (31) by backing out all four
screws equally.
11. Rotate the drive screw (45) by hand approximately 20
to 25 turns counterclockwise so that the acme threaded
portion can be disconnected from the drive nut (2). Pull
out the drive screw sub-assembly.
12. Loosen the jam nut (9) from the face of the
extension rod (47).
13. Remove the clevis (8)
14. Scribe alignment marks on the side of the housing (1) in
line with the set screws (132) in the body tube (46).
15. Remove the locknut (22), washer (20) and where
applicable the o-ring (106) from the tie rods (48).
16. Remove the set screws (132) from the body tube.
17. While tapping on the outside surface of the end
cap (3), pull out the body tube along with the
end cap.
18. Remove the drive nut from the extension rod by
using a spanner wrench on the holes. The threaded
portion of the extension rod is loctited to the drive nut;
it may be necessary to heat the extension rod outside
diameter over the threads. If heat is required, do not
exceed 350°F.
To reassemble the actuator, reverse the above procedures as
well as the following instructions:
Step 18: Use Loctite® 242 or equivalent on the threads
when reassembling the drive nut to the
extension rod.
Step 17: Realign the set screw hole in the body tube
with the alignment mark scribed on side of
the housing in Step 14.
Step 12: Use a spacer to compress the belleville
springs (33) enough to draw the following
items up tightly: helical gear (6), thrust
switch sleeve (5) and bearing sleeve (4).
The spacer should match the following
dimensions of the hub drive gear (41):
removal of the drive screw sub-assembly.
• Hub outside diameter
3.
Replace the complete geared position limit switch
assembly rather than attempting field repair.
• Hub inside bore
4.
Disconnect the motor leads making sure they are
properly marked for reconnection.
• Length along hub inside bore
5.
Remove the motor (30) by unfastening the screws (25)
Reinstall the drive screw into the drive nut by
rotating the drive screw clockwise until the outer race of
forward ball bearing (13) bears firmly against the
Andco Series 7000 IOM NGS.IPG.0032 | 9
shoulder machined in the housing.
CAUTION
Step 10: With the bearing plate (31) in place,
remove the spacer used in Step 12;
resume reassembly.
SERVICE PERSONEL
Service operators must be licensed/trained and authorized before
being allowed to perform maintenance on the actuator.
When assembling joints with flat gaskets, perform these steps:
Clean and inspect the joint faces for damage.
Apply Permatex Ultra Black sealant to both sides of a new
gasket and assemble.
Tighten the fasteners to a low torque: 5-7 ft-lbs for 3/8” bolts
and 2-3 ft-lbs for ¼” screws.
ATTENTION
PERSONNEL DE MAINTENANCE
Les opérateurs de maintenance doivent être licenciés/formés et
agréés avant de pouvoir effectuer des travaux de maintenance sur
l’actionneur.
1.
Remove the position limit and thrust switch
compartment covers (51 and 65).
2.
Disconnect the leads on the geared position limit switch
and thrust switch, making sure they are properly marked
for reconnection to the proper terminals. Remove a pipe
plug (23) in the side of the housing (1) to make a path for
vent air into the housing as the switch assembly is being
pulled from it’s mounting. The geared position limit switch
assembly is retained by hardware (56 and 57). Remove
the limit switch assembly by removing the hardware and
rotating the switch assembly clockwise approximately 90°
while pulling the assembly up out of the housing. This is
required to move the helical gear input shaft out of mesh
with the helical gear (6) on the drive screw (45). Remove the
o-ring (55). The thrust switch assembly is retained by
removing the hardware and pulling the assembly straight
up. Both switches must be removed to permit removal of the
drive screw sub-assembly.
3.
Replace the complete geared position limit switch
assembly rather than attempting field repairs.
4.
Disconnect the motor leads making sure that they are
properly marked for reconnection to the proper
terminals.
5.
Remove the motor (30), and brake housing (133) by
removing the screws (25) and lockwashers (26).
6.
Remove the locknut (101) if the motor pinion (40) is
to be replaced.
7.
With a socket wrench on the castle nut (21), turn the drive
screw (45) counterclockwise extending the extension rod
(47) until rotation becomes difficult due to the ball nut
coupling (73) bottoming out against the cushion stops.
8.
Remove the drive screw cotter pin (64) and slotted
hex nut.
9.
Pull out the drive gear (41) and remove the key (15) from the drive screw.
Allow to sit for 15 minutes.
Proceeding in an X pattern, torque the fasteners: 17-19 ft-lbs
for 3/8” bolts and 5-6 ft-lbs for ¼” screws.
Tighten all bolts evenly, increasing the torque with each
tightening cycle until the final torque is reached.
Let the units stand for 8 hours.
Back off the fasteners 30 degrees (1/2 flat).
Retorque the fasteners as before.
After reassembly, final adjustments can be made by again
threading the clevis in or out of the extension rod as previously
mentioned.
The actuator must be lubricated before being returned to
operation. Use the lubricants listed in Table 5. Fill the gear cavity
under the recess for the geared position limit
switch assembly (52).
Remove the loctited hex head cap screw (24) in the end cap; it
may be necessary to heat the end cap near the cap screw. If heat is
required, do not exceed 350°F. Temporarily install a grease fitting.
Add the lubricant through this fitting.
When lubrication is completed, remove the temporary grease
fitting and reinstall the screw; applying Loctite® 242 or equivalent
to the screw threads.
Remove the pipe plugs (23) in the bottom and side or top
of the housing.
Install the lubricant through the bottom opening until the
lubricant starts to flow out through the side opening. Reinstall the
pipe plugs.
Disassembly and Reassembly of
the Model 7000 Posi-Tork Ball
Screw Actuator
WARNING
10. Remove the bearing plate (31) by backing out all
four screws (42) equally.
Disconnect all electrical power before removing covers of either
position or thrust switch compartments.
WARNING
AVERTISSEMENT
Débranchez tous les câbles électriques avant d’ôter les couvercles des
compartiments des commutateurs de position ou à pousser.
10 | Dresser Natural Gas Solutions
DO NOT back out the drive screw more than is required for access.
To do so could cause loss of complete screw engagement in ball nut
and allow balls to drop out. Slide thrust switch sleeve (5) and helical
gear (6) off screw. Oil seal bushing (71) is loctited in place and will
not require removal.
AVERTISSEMENT
N’enlevez PAS le clou-vis davantage que ce qui est requis pour bénéficier
d’un accès. Autrement, vous risqueriez de le dégager complètement
dans l’écrou sphérique et de faire tomber les billes. Faites glisser le
manchon du commutateur à pousser (5) et la roue hélicoïdale (6) hors du
clou-vis. Du loctite est appliqué sur la douille de la bague d’étanchéité
(71) alors qu’elle est en place; elle ne nécessitera donc pas d’être ôtée.
11. Rotate the drive screw (45) by hand counter-clockwise to
expose the bearings (13), disc springs and bearing sleeve (4)
for removal.
12. Loosen the jam nut (9) from the face of extension rod.
13. Remove the clevis (8).
14. Scribe alignment marks on the side of the housing
in line with the hex head cap screws in the body tube (46).
15. Remove the locknut (22), washer and, where applicable,
o-ring or thread seal from the tie rods (48).
16. Remove the set screws from body tube.
17. By tapping on the outside surface of the end cap (3), pull out
the body tube along with the end cap
18. Remove the ball nut coupling from the extension rod by
using a spanner wrench on the holes. The threaded portion
of the extension rod is loctited to the ball coupling, so
that it may be necessary to heat the extension rod outside
diameter over the threads. If heat is required, do not exceed
the 350°F maximum surface temperature.
19. On longer stroke actuators the end of the drive screw is
bearing supported. If your actuator has this feature, remove
the flexlocnut and the bearing cartridge.
20. Loosen the set screws (76) from the ball nut coupling and
turn off from the ball nut (2).
21. Secure with tape and leave the ball nut on the drive screw if
both items are to be reused. If the ball nut will be reused and
drive screw requires further work or replacement, remove
ball nut on to a bar or tube with an outside diameter slightly
less than the root diameter of the ball screw. If ball nut
requires replacement, removal from the drive screw may be
done.
To reassemble the actuator, reverse the procedure including
the following information:
Step 20: When the ball nut coupling (73) is securely
tightened to the ball nut (2) make sure the ball return tube(s) in the ball nut lined up with the clearance notches in the coupling stop/
cushion (74) or (62). Use Loctite® 242 on the socket
set screws (76) and tighten to the minimal torque.
1/4 - 20
5/16 -18 3/8 -16 1/2 -13 6 FT-LBS
12 FT-LBS
20 FT-LBS
43 FT-LBS
of the housing (1) in Step 14.
Step 11:Use a spacer to compress the multiple disc springs enough to draw up tightly
these items:
Helical gear (6), thrust switch sleeve (5) and bearing sleeve (4).
The spacer should match the following
dimensions of the hub of the drive gear (41):
1. Hub outside diameter.
2. Hub inside bore.
3. Length along hub inside bore.
Step 10: With the bearing plate (31) in place remove the spacer used above and resume assembly the ­procedure.
When assembling joints with flat gaskets, perform these steps:
Clean and inspect the joint faces for damage.
Apply Permatex Ultra Black sealant to both sides of a new
gasket and assemble.
Tighten the fasteners to a low torque: 5-7 ft-lbs for 3/8” bolts
and 2-3 ft-lbs for ¼” screws.
Allow to sit for 15 minutes.
Proceeding in an X pattern, torque the fasteners: 17-19 ft-lbs
for 3/8” bolts and 5-6 ft-lbs for ¼” screws.
Tighten all bolts evenly, increasing the torque with each
tightening cycle until the final torque is reached.
Let the units stand for 8 hours.
Back off the fasteners 30 degrees (1/2 flat).
Retorque the fasteners as before.
After completing reassembly, mounting adjustments
can be made by threading the clevis (8) in or out of the
extension rod (47). Upon realignment, tighten the jam nut
(9) to lock the clevis.
The actuator must be lubricated before being returned to
operation. Use the lubricant listed in Table 6. Fill the gear cavity
under the recess for the geared position limit switch assembly
(52) before reinserting the switch
assembly into the housing.
Remove the loctited hex head cap screw (24) in the end cap (3);
it may be necessary to heat the end cap near the cap screw. If
heat is required, do not exceed 350° F. Temporarily install a grease
fitting in the 1/4 - 28 tapped hole. Add the lubricant through this
fitting in the amount listed in Table 5.
When lubrication of the area is completed, remove the temporary
grease fitting and reinstall the screw (24) after applying Loctite®
242 or equivalent to the screw threads.
Step 18: Use Loctite® 242 on the threads when
reassembling the ball nut coupling to the extension rod (47).
Remove the pipe plugs (23) in the bottom and side of the
housing. Install lubricant through the bottom opening until
lubricant starts to flow out through the side opening.
Reinstall pipe plugs.
Step 17:Realign the set screw hole in the body tube (46) with alignment mark scribed on the side Lubrication is completed.
Andco Series 7000 IOM NGS.IPG.0032 | 11
Electric Brake
The electric brake (134) provides a positive clamping force to the
actuator motor shaft and holds the actuator in position when the
motor is off. The high efficiency ball screw is not self-locking and
can be back driven by an external load.
Normally, the brake is spring set to prevent motor shaft rotation
when electrical power is off and released when
the motor is energized. The brake is engaged directly on
an extended motor shaft and housed within a cast cover bolted
directly to the motor end bell.
3.
Use a screwdriver in the slotted motor shaft to
rotate the shaft clockwise to extend the actuator
extension rod.
4.
When the adjustment is completed or power is
restored, replace the brake cover and conduit pipe
plug securely.
15
15D 15C 15B 15A
3
Brake Adjustment
15R
Before the air gap “A” reaches .100”, adjustment is required. Any
delay in adjusting the magnet air gap will result in eventual loss
of torque. Refer to Figure 2.
1.
To adjust, remove the brake cover to expose square
head wear adjusting screws (15H) and expose the
magnetic air gap “A”.
2.
Measure the air gap “A” using 3/8” to 1/2” wide feeler gauge.
(Measure at center of magnet.)
3.
Turn the two square head wear adjusting screws until the air
gap “A” measures:
“A”
6
5
Measure “A”
Here Both
Sides
Spring Length
1” for All Models
1
“N” ±1/32”
15S
2
15H
12
13
.045/.050 for 3’# models
.050/.055 for 6’# models
.050/.055 for 10’# models
10
19
CAUTION
Figure 3 - Electric Brake Drawing
Do not adjust brakes for higher torques as this will cause premature
coil burnout.
Table 3 - Electric Brake Parts List
ATTENTION
Item
18
Description
1
Splined Hub
3
Release Knob
Manual Brake Release
13
Friction Disc
15H
Wear Adjustment Screw
15S
Spring
15A
Magnet Assembly
45
Terminal Strip (Not shown)
Disconnect all electrical power to the actuator.
AVERTISSEMENT
Débranchez tous les câbles électriques de l’actionneur.
The brake may be released manually to permit manual operation
of the actuator for limit switch adjustment or during an electrical
power failure.
Remove the brake cover and conduit pipe plug
from the motor end bell.
With a flat head screwdriver inserted into the
motor end bell conduit port, turn the release knob
(3) clockwise to stop the position to release the brake. The
brake will remain released until the release knob is turned
counterclockwise (approx. 65°) or until the brake coil is
energized, automatically resetting the brake.
12 | Dresser Natural Gas Solutions
11
17
Ne réglez pas les freins sur des couples plus élevés; vous risqueriez de
provoquer l’usure prématurée de la bobine.
WARNING
2
4
15T
Air gap should be the same on both sides.
1.
15E
Brake Removal and Replacement
WARNING
Disconnect all electrical power to the actuator.
AVERTISSEMENT
Débranchez tous les câbles électriques de l’actionneur.
CAUTION
BURN HAZARD
Possible hot surface. Keep hands
clear of surface. Allow surface
to cool before performing any
maintenance.
1.
Remove the position limit switch compartment cover (51) to
gain access to the position switch assembly (52).
2.
Remove the motor pipe plug (100) for access to slot “A”,
located in the end of the motor shaft.
3.
With a manual or power screw driver, rotate the shaft
clockwise to extend the actuator shaft.
4.
If the rotor (#36-1) contact fingers are closed, open them by
pushing down on the slotted shaft “1” and turning clockwise
until the “extend” rotor turns 90° counterclockwise and the
shaft is fully extended. If the rotor (#36-1) has turned so the
contacts are already open, push and turn the slotted shaft
“1” counterclockwise until the rotor turns about 90° and
the contacts close. Then push and turn the slotted shaft “1”
clockwise until the rotor turns to open the contacts. The
rotor is now set to trip and stop the actuator in the fully
extended position.
5.
After retracting the clevis pin to the desired position by
rotating the motor shaft in a counterclockwise direction.
Follow the same procedure setting the second rotor (#36-4)
except reverse the rotation directions.
6.
If the switch assembly has been supplied with four rotors, the
additional rotors with their corresponding slotted shafts #2
and #3 are for intermediate tripping points of other electrical
circuits. Follow the procedure described in No. 4 to set the
additional rotors (#36-2 and #36-3) at the desired clevis pin
positions.
7.
Make sure the mating surfaces of the cover and
housing are clean. Replace the compartment cover, gasket
(60) and secure them tightly in place with the hardware (53
and 54).
AVERTISSEMENT
8.
Replace the motor pipe plug tightly.
Débranchez tous les câbles électriques de l’actionneur avant d’ôter le
couvercle du compartiment de l’interrupteur de fin de course de position et
de procéder aux réglages.
9.
Reconnect all electrical power to the actuator.
ATTENTION
RISQUE DE BRÛLURE
La surface risque de devenir
chaude. Éloignez vos mains de la
surface. Laissez refroidir la surface
avant les travaux de maintenance.
Complete replacement of the electric brake is
recommended rather than attempting field repairs.
1.
Remove the brake cover from the motor end bell.
2.
Disconnect the coil power wires, leading into the actuator
motor housing, from the terminal strip.
3.
Remove the four socket head cap screws and lockwashers
securing the brake assembly to the
motor end bell. Remove the entire brake assembly.
Replacement of the brake assembly is done by
reversing the above procedure.
Geared Position Limit
Switch Adjustment
The geared position limit switches has been preset at the factory
according to the specified stroke. However, if the actuator stroke
must be readjusted, proceed as follows.
WARNING
Disconnect all electrical power to actuator prior to removing
position limit switch compartment cover and performing any
setting adjustment.
2
3
45
43
44
42
41 102
39
44
41 102
38
36 37
101
Extend
51
1
4
36
Figure 4 - Geared Position Limit Switch Parts Drawing
Andco Series 7000 IOM NGS.IPG.0032 | 13
Table 4 - Geared Position Limit Switch Parts List
Item
Description
1-4
Slotted Adjustment Shaft
36
Rotor Sub- Assembly
37
Rotor Driver
38
Rotor Plate
39
Terminal Block
41
Fillister Head Machine Screw
42
Flat Head Machine Screw
43
Socket Head Machine Screw
44
Hi-Collar Lockwasher
45
Lockwasher
51
Decal-Extend
101
Gear Frame Sub-Assembly
102
Finger Base Sub-Assembly
1.
Remove the thrust limit switch compartment cover
(65) to gain access to the thrust switch assembly (66).
2.
To set the thrust load tripping point for the extend
or retract direction strokes, loosen the screw (19) and
move the appropriate pointer (3) to the desired thrust
setting. The higher the number, the higher the
thrust output of the actuator.
3.
Re-tighten the screw.
4.
Make sure the mating surfaces of the cover and the
housing are clean. Replace the compartment cover and
gasket (61) and secure them tightly in place with the
hardware (69 and 70).
5.
A maximum stop setting is furnished on all actuators.
DO NOT EXCEED THIS SETTING WITHOUT
CONSULTING THE FACTORY.
Table 5 - Thrust Limit Switch Parts List
Item
Description
1
Thrust Switch Base
2
Thrust Switch Arm
3
Pointer
4
Adjusting Arm
5
Thrust Switch Dial
6
Thrust Switch Bushing
7
Bearing Lever
8
Bearing Lever Pin
9
Torsion Spring
10
Insulator
AVERTISSEMENT
11
Thrust Switch Shaft
Débranchez tous les câbles électriques de l’actionneur avant de
procéder aux réglages de l’interrupteur de fin de course à pousser.
12
Thrust Switch Limiter Plate
13
Thrust Washer
14
Microswitch
15
O-Ring
MOVING PARTS
16
O-Ring
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
17
Ball Bearing
18
Socket Head Machine Screw
19
Socket Head Machine Screw
20
Socket Head Machine Screw
21
Socket Set Screw
22
Hex Nut
23
Hi-Collar Lockwasher
24
Groove Pin
25
Groove Pin
26
Decal-Extend
27
Decal-Retract
29
Lockwasher
Thrust Limit Switch Setting Procedure
The thrust switches have been preset at the factory
according to the information provided by the customer.
However, for field adjustment to decrease or increase the
thrust force that will trip the thrust limit switches to interrupt
the electric circuit to the motor, follow the procedure below.
WARNING
Disconnect all electrical power to actuator prior to
performing any thrust limit switch adjustment.
WARNING
AVERTISSEMENT
PIÈCES MOBILES
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
14 | Dresser Natural Gas Solutions
Lubrication Instructions
26
10
14
27
2
18
Every Posi-Tork® Linear Actuator has been lubricated at the
factory and should not require lubrication if operated at
the published duty cycle, thrust rating and in appropriate
environmental conditions. Good preventative maintenance
practice should be performed at six-month intervals. The
lubricant should be inspected to verify proper consistency
and quality. The inspection can be made by removing the
pipe plug (23) located in the side of the housing (1). After
completing a satisfactory inspection, tightly replace the pipe
plug. If lubricant level is low or visibly contaminated, the
actuator should be further inspected to determine the cause.
20 29
12
“C”
“C”
The amount of lubricant in each actuator depends on the
size and stroke of the actuator. See Table 4.
Standard lubricants for use in the actuator are shown in
Table 5. Substitute lubricants are listed in Table 5A.
3
5
22
4
21
3
19 23
Table 6 - Lubricant Required per Actuator Size and Stroke
Top View
25
Actuator Lubricant Amount, Pounds
11
6
Apply Lubricant
at Assembly
9
.004 - .005
Clearance
13
Stroke
(Inches)
7100
ACME
7200
ACME
73-7200
ACME
7300
ACME
74-7300
ACME
6
.50
.75
1.25
1.25
1.50
12
.75
1.25
2.00
2.00
2.25
18
1.00
1.75
2.75
2.75
3.25
24
1.25
2.00
3.50
3.50
4.25
30
—
2.25
4.25
4.25
5.25
36
—
2.75
5.00
5.00
6.25
46
—
—
6.50
6.50
8.00
60
—
—
8.00
8.00
10.00
Acceptable Lubricants
15
7
8
Standard lubricants and acceptable substitutions for
use in the actuator in Table 3.
17
Side View
Table 7 - Standard and Substitute Lubricants
1
16
Recommended
Manufacturer
AeroShell Grease 6
Shell Oil Products
Substitute
Manufacturer
Lubriplate MAG-1
Fiske
Litholene HEP1
ARCO
Mobilux EP1
Mobil
Gulfcrown EP1
Gulf
24 Drill & Pin
at Assembly
Figure 5 - Thrust Limit Switch Parts Drawing
Andco Series 7000 IOM NGS.IPG.0032 | 15
Optional Equipment
Gear Driven Potentiometer
Dust-Ignition Proof Enclosure
Hazardous Locations Class II Division I, Groups E,
F&G
Actuators that comply with the NEC specification must have
electrical access covers that exclude ignitable amounts of
dust. When reinstalling these covers, ensure the mating
seating surfaces and gaskets are clean and the attachment
bolts are securely tightened. If the motor end bell pipe plug
has been removed to adjust the actuator, the pipe plug must
be reinstalled tightly. The actuator must be able to operate
at full rating without developing high enough surface
temperatures to cause excessive dehydration or gradual
carbonization of organic dust deposits on the actuator
enclosure. The motor thermal overload switch must be
wired as shown and noted in the electrical wiring diagram
provided with the actuator.
WARNING
GROUNDING LUG
Unit must be grounded with
minimum size 10 AWG wire.
This option enables the actuator to provide a continuous
linear output signal directly proportional to its stroke. The
signal can be interfaced with automatic control equipment
to position or sense the actuator at any desired stroke
position between fully extended and fully retracted. The
potentiometer assembly is mounted directly to, and driven
by the geared position limit switch. Input gearing to the
potentiometer accommodates the full range of actuator
strokes. The potentiometer has been factory adjusted so the
0 and 1000 ohm resistance points correspond respectively,
to the fully extended and fully retracted rod positions. Field
adjustments may be made by loosening the set screw in the
drive pinion on the potentiometer shaft, rotating the shaft as
required and retightening the set screws.
Limit Switch Compartment Heater
An optional space heater mounted within the geared
position limit switch compartment is available for
several ambient applications. The heater is powered
by 120 VAC. The input voltage is continuous unless
externally interrupted.
Integral Motor Starter
For information concerning the motor starter and any other
related control components provided, refer to the electrical
wiring diagram provided with the actuator.
AVERTISSEMENT
PATTE DE MISE À LA TERRE
L’unité doit être mise à la terre
avec un fil de calibre 10 au moins.
The grounding lug on the actuator enclosure exterior
must be wired to a suitable grounding system with a
minimum of #10 AWG wire as noted in the electrical
wiring diagram provided.
3
75
67
29
27 73
39 63 64
77
1 71 33
34
47 21 70
.003 - .005
Gap
36
66
75
40 48
65
45
18
42 76
69
15
50
68
51
58
24
44
22
21
12
20
48
38
74
53
41
60
55
58
61
86
37
2
Figure 6 - Manual Handwheel Clutch Assembly Parts Drawing
16 | Dresser Natural Gas Solutions
46
57
60
43
50
54
49 56
52
17 72
Table 8 - Manual Handwheel Clutch Assembly Parts List
Item
Description
Item
Description
Item
Description
1
Housing
33
Retaining Ring
49
Tipper Holder
2
Cover Plate
34
O-Ring
50
Tripper #1
3
Motor Gasket
36
Handwheel
51
Tripper #2
12
Drive Shaft
37
Declutch Lever
52
Clutch Bracket
15
Collar
38
Declutch Shaft
53
Fork Shaft
17
Bearing
39
Clutch
54
Latch
18
Bearing
40
Handwheel Shaft
55
Fork Spacer
20
Bearing Spring
41
57
Bridge
21
Round End Key
Socket Head
Cap Screw
Key
Set Screw
Spring Pin
22
42
58
Pinion Locknut
(where applicable)
Socket Head
Cap Screw
Fork Springs
24
43
60
61
Thrust Washer
63
Clutch Gear
64
Dowel Pin
65
Flanged Bearing
27
Hex Head Cap Screw
29
Lockwasher
45
Quad Ring
46
Quad Ring
47
Handwheel
Shaft Gear
48
Spring Pin
Manual Handwheel Clutch Assembly
The manual handwheel clutch assembly permits manual
operation of the linear actuator during installation,
adjustments and during an electrical power failure.
The handwheel clutch assembly is readily engaged for
handwheel operation and will automatically disengage from
the handwheel and re-engage to the electric motor when
electric power is restored.
In normal electrical operation, the declutch lever (37) is to
the left and the clutch (39) is held in engagement with the
motor clutch (73) by the pull of the fork springs (60) on the
latch (54), which spreads trippers #1 and #2, (50) and (51),
away from the motor clutch. The latch is pinned (58) to the
fork shaft (53) as is shifter (68). The bearing (70), mounted in
the shifter, bears against the shoulder of the clutch, closest
to the motor clutch. Lugs on both clutches engage one
another to transmit the motor power through the key (21) to
the drive shaft (12).
Item
Description
66
Handwheel
Shaft Plug
67
O-Ring
68
Shifter
69
Bearing Lever Pin
70
Bearing
71
Bearing Cartridge
72
Retaining Ring
73
Motor Clutch
74
Tripper Pin
75
Set Screw
76
Bushing
77
Retaining Ring
80
Lockwasher
86
Set Screw
NOTE: When the latch is engaged in the tripper locking
notches, the declutch lever cannot be manually rotated
clockwise. DO NOT ATTEMPT TO FORCE IT!
The declutch lever rotation also turns the fork shaft and
shifter to slide the clutch along the drive shaft, out of the
engagement with motor clutch lugs, into engagement
with clutch dowel pin (64). Should the declutch lever fail
to stay locked in the manual operation position, rotate the
handwheel (36) slightly, in either direction, to clear the
sliding restriction caused by the clutch lugs aligning with
the gear pins and preventing proper engagement. With
the clutch properly locked in position, the actuator can be
operated by rotating handwheel clockwise to extend the rod
and counterclockwise to retract the rod. The actuator will
remain in manual operation until the motor is energized.
For manual operation, rotate the declutch lever counterclockwise until a definite “click” is felt. This is the result
of the latch being rotated upward between the two spring
loaded trippers and past the locking notches in the trippers.
Andco Series 7000 IOM NGS.IPG.0032 | 17
Removal & Replacement
WARNING
Disconnect all electrical power to the actuator before disassembly.
AVERTISSEMENT
Débranchez tous les câbles électriques de l’actionneur avant le
démontage.
WARNING
1.
Remove all the hex head cap screws (53) and associated
lockwashers (54). Remove the limit switch compartment
cover (51) from the actuator assembly.
2.
Remove all the hex head cap screws (69) and
associated lockwashers (70). Remove the thrust switch
compartment cover (65) from the actuator assembly.
3.
Disconnect all electrical power leads to the motor
(30). Remove all the carriage bolts and associated
lockwashers. Remove the motor end bell then the
motor assembly from the actuator.
4.
Remove the handwheel clutch assembly from
the actuator.
PPE
Approved Personnel Protective
Equipment for the site must
be worn.
NOTES:
AVERTISSEMENT
1. Refer to the actuator assembly drawing in
Figure 3, page 12, for the procedure listed above.
EPI
2. To replace the handwheel clutch assembly, use the
procedures listed above in reversed order.
Il convient de porter un
équipement de protection
individuelle sur le site.
WARNING
3. When assembling joints with flat gaskets, perform
these steps:
Clean and inspect the joint faces for damage.
Apply Permatex Ultra Black sealant to both sides
of a new gasket and assemble.
Tighten the fasteners to a low torque: 5-7 ft-lbs
for 3/8” bolts and 2-3 ft-lbs for ¼” screws.
Allow to sit for 15 minutes.
Proceeding in an X pattern, torque the fasteners:
17-19 ft-lbs for 3/8” bolts and 5-6 ft-lbs for
¼” screws.
Tighten all bolts evenly, increasing the torque
with each tightening cycle until the final torque
is reached.
Let the units stand for 8 hours.
Back off the fasteners 30 degrees (1/2 flat).
Retorque the fasteners as before.
MOVING PARTS
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
AVERTISSEMENT
PIÈCES MOBILES
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
CAUTION
SERVICE PERSONEL
Service operators must be licensed/trained and authorized before
being allowed to perform maintenance on the actuator.
ATTENTION
PERSONNEL DE MAINTENANCE
Les opérateurs de maintenance doivent être licenciés/formés et
agréés avant de pouvoir effectuer des travaux de maintenance sur
l’actionneur.
CAUTION
LIFTING HAZARD
Single person lift could cause injury.
Use assistance when moving or lifting.
Dissassembly
1.
Shift the declutch lever (37) to the manual position.
2.
Restrain the drive shaft (12) from rotating by holding
the handwheel (36) and remove the pinion locknut (24).
3.
Loosen the set screw (42) and remove the handwheel.
4.
Loosen the set screw (86) and remove the
declutch lever.
5.
Remove the cover plate screws.
6.
Withdraw the handwheel shaft assembly including the
spring pin (48), bushing (76), cover plate (2),
quad ring (45), handwheel (36), shaft plug (66),
o-ring (67), flanged bearing (65), handwheel
shaft gear (47) with associated set screw (75).
7.
Withdraw the declutch shaft (38) with quad ring (45).
ATTENTION
RISQUE LIÉ AU LEVAGE
Le levage de l’unité par une seule personne est dangereux.
Demandez de l’aide lors du déplacement ou du levage de l’unité.
18 | Dresser Natural Gas Solutions
8.
Remove the trippers and fork springs (60).
9.
Remove the cap screws (41 and 43) and the associated
lockwasher (80). Rotate the clutch shifter sub-assembly
clockwise to disengage the bearing (70) from the clutch
(39) and remove the clutch shifter sub-assembly from
the housing (1).
WARNING
PPE
Approved Personnel Protective
Equipment for the site must
be worn.
10. Slide the clutch off drive shaft (12) and remove the
round ended key (21).
11. Remove the key (22) and gear from the locknut end of
the drive shaft.
NOTES:
1. Often times the handwheel clutch assembly is
provided with a drive shaft having gear teeth
machined into it. Disregard Steps 2 and 11 if this type
of drive shaft is present in your sub-assembly.
2. Refer to the parts list on page 13 for all drive shafts
and gears available.
12. Remove the collar (15) or snap ring from the locknut
end of the drive shaft.
AVERTISSEMENT
EPI
Il convient de porter un
équipement de protection
individuelle sur le site.
WARNING
MOVING PARTS
Internal moving parts. Pinch point
hazard. Keep hands clear during
operation.
13. Withdraw the drive shaft with the clutch gear (63),
dowel pin (64) and bearing cartridge (71). Remove the
bearing (18).
AVERTISSEMENT
Reassembly is done by reversing the disassembly procedure.
Upon completion of reassembly, liberally grease all sliding
and rotating components before reinstalling the manual
handwheel clutch assembly to the actuator.
Pièces mobiles internes.
Risque de point de pincement.
Tenez vos mains éloignées
pendant le fonctionnement.
When assembling joints with flat gaskets, perform these steps:
Clean and inspect the joint faces for damage.
PIÈCES MOBILES
CAUTION
SERVICE PERSONEL
Apply Permatex Ultra Black sealant to both sides of a
new gasket and assemble.
Service operators must be licensed/trained and authorized before
being allowed to perform maintenance on the actuator.
Tighten the fasteners to a low torque: 5-7 ft-lbs for 3/8”
bolts and 2-3 ft-lbs for ¼” screws.
ATTENTION
Allow to sit for 15 minutes.
Proceeding in an X pattern, torque the fasteners:
17-19 ft-lbs for 3/8” bolts and 5-6 ft-lbs for ¼” screws.
Tighten all bolts evenly, increasing the torque with each
tightening cycle until the final torque is reached.
Let the units stand for 8 hours.
Back off the fasteners 30 degrees (1/2 flat).
Retorque the fasteners as before.
If your actuator includes a gear box assembly, it has
been selected based on specific conditions of stroke
velocity and/or thrust. The gear box assembly is always
mounted directly to the actuator housing.
PERSONNEL DE MAINTENANCE
Les opérateurs de maintenance doivent être licenciés/formés et
agréés avant de pouvoir effectuer des travaux de maintenance sur
l’actionneur.
CAUTION
LIFTING HAZARD
Single person lift could cause injury.
Use assistance when moving or lifting.
ATTENTION
RISQUE LIÉ AU LEVAGE
Le levage de l’unité par une seule personne est dangereux.
Demandez de l’aide lors du déplacement ou du levage de l’unité.
Disassembly & Reassembly of the Gear Box Assembly
WARNING
Disconnect all electrical power to the actuator.
AVERTISSEMENT
Débranchez tous les câbles électriques de l’actionneur.
Andco Series 7000 IOM NGS.IPG.0032 | 19
1.
Remove the position and torque limit switch
compartment covers (51 and 65).
2.
Disconnect the electrical power leads to the motor,
remove the four fasteners retaining motor end bell
and stator and remove the motor components
including the rotor and all mounted parts, by
withdrawing straight out.
Table 9 - Gear Box Assembly Parts List
Item
Description
1
Housing
2
Cover Plate (Not shown)
3
Motor Gasket
4
Cover Gasket (Not shown)
5
First Set Gear Shaft
6
Support Washer
7
Spacer
8
Set Pinion
9
Second Set Gear
10
Set Pinion
11
Set Gear
6a. For Model 7300 Actuators: Remove the housing adapter
(30) by removing the screw (31).
12
Drive Shaft
13
Output Pinion
7.
For Model 7200 Actuators: Slide the drive shaft through
the support bearing (17) and out of the housing.
15
Pinion Spacer
7a. For Model 7300 Actuators: Remove the flexlocnut (24),
retaining second set gear (9) and the key (22). Slide the
second set gear off the drive shaft (12).
16
Ball Bearing
17
Ball Bearing
18
Ball Bearing
Reassembly is done by reversing the above procedure.
When reinstalling the gear box assembly on the actuator,
remove the cover plate (2) to guide the first set gear shaft
into the bearing. After reinstallation on the actuator, fill
the housing completely with the appropriate lubricant , as
shown on page 11, and replace the cover plate and cover
plate gasket (4).
19
Bearing Spring
20
Spacer
21
Spacer End Key
22
Square Key
23
Square Key
24
Flexlocnut
When assembling joints with flat gaskets, perform these
steps:
27
Hex Head Cap Screw
29
Spring Lockwasher
3.
Remove the gear box assembly from the actuator.
4.
Ensure the bearing (16), supported in the motor end of
the housing, is retained with the first set gear shaft (5).
5.
The entire first set gear shaft with all the mounted
gears and spacers can be drawn straight out of
the housing (1).
6.
For Model 7200 Actuators: Remove the flexlocnut (35),
retaining output pinion (13), pinion spacer (15) and
key (23).
Clean and inspect the joint faces for damage.
30
Housing Adapter
Apply Permatex Ultra Black sealant to both sides of a
new gasket and assemble.
31
Screw
Tighten the fasteners to a low torque: 5-7 ft-lbs for 3/8”
bolts and 2-3 ft-lbs for ¼” screws.
32
Conduit Bushing
33
Retaining Ring
34
O-ring
35
Flexlocnut (Not shown)
Allow to sit for 15 minutes.
Proceeding in an X pattern, torque the fasteners:
17-19 ft-lbs for 3/8” bolts and 5-6 ft-lbs for ¼” screws.
Tighten all bolts evenly, increasing the torque with each
tightening cycle until the final torque is reached.
3
29 27
32
30 31
1
33
34
Let the units stand for 8 hours.
Back off the fasteners 30 degrees (1/2 flat).
22
Retorque the fasteners as before.
15
23
18
20
17
19
12 10 5 16 6 21 11 24 9
8
7
6
16
21
Figure 7 - Gear Box Assembly Parts Drawing
20 | Dresser Natural Gas Solutions
30
13
Table 10A - Trunnion Mounting
Series
TA
TB
TC
TD
TE
TF
TG
TH
TJ
TK
7100-A
0.63
3.50
0.50
4.00
1.88
0.53
0.75
4.75
7.47
9.25
7200-A
0.63
3.50
0.50
4.00
1.88
0.53
0.75
4.75
7.47
9.25
7300-A
0.75
4.66
0.87
7.56
5.50
0.66
1.19
6.50
9.50
11.25
74-7300-A
0.75
4.66
1.00
7.56
5.50
0.66
1.43
7.50
10.50
12.25
Table 10B - “T” Dimensions (Shown with Actuator Fully Retracted
Series
7100-A
6” Stroke
12” Stroke
18” Stroke
24” Stroke
30” Stroke
36” Stroke
48” Stroke
60” Stroke
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
6.63
7.63
11.63
13.63
16.63
19.63
19.63
25.63
–
–
–
–
–
–
–
–
7200-A
6.63
7.63
11.63
13.63
16.63
19.63
19.63
25.63
25.63
31.63
31.63
37.63
–
–
–
–
7300-A
10.00
11.50
13.50
17.50
17.00
23.50
21.00
29.50
26.00
35.50
32.00
42.50
38.00
53.50
44.00
65.50
74 -7300-A
12.00
14.25
17.00
20.25
20.00
26.25
23.00
32.25
26.00
38.25
32.00
44.25
38.00
56.25
44.00
68.25
Notes
1.
An adjustable trunnion mount is standard on 7200, 7300, and 74-7300 Series actuators (optional on 7100).
For 7400 Series ball screw actuators with an adjustable trunnion mount use “T” dimension from the 7400
flange mount table. Fixed location trunnion pins are standard on 7400 and 7500 Series actuators.
2.
Trunnion brackets are optional on all models.
3.
Actuators supplied with adjustable trunnion mounting are set at the maximum dimension unless otherwise specified.
4.
Dimensions are for reference only. Contact Dresser Natural Gas Solutions for engineering drawings.
Figure 8 - Trunnion and Clevis Mounting
Figure 9 - Face/Flange Mounting
Andco Series 7000 IOM NGS.IPG.0032 | 21
Table 11A - Face/Flange Mounting
Series
FA
FB
FC
FD
FE
FF
FG
7100-A
1.00
2.00
4.25
5.50
0.56
1.00
4.00
7200-A
1.00
2.00
4.25
5.50
0.56
1.00
4.00
7300-A
1.50
3.00
5.75
7.00
0.69
1.38
4.00
74-7300-A
2.25
4.50
6.50
8.00
0.81
1.00
5.00
Table 11B - “T” (Shown with Actuator Fully Retracted)
12” Stroke
18” Stroke
24” Stroke
30” Stroke
36” Stroke
48” Stroke
60” Stroke
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MAX
MIN
MIN
MAX
MIN
MAX
MIN
MAX
7100-A
3.32
6.75
3.32
12.75
6.63
18.75
12.63
24.75
–
–
–
–
–
–
–
–
7200-A
3.32
6.75
3.32
12.75
6.63
18.75
12.63
24.75
18.63
30.75
24.63
36.75
–
–
–
–
7300-A
10.00
11.00
16.00
17.00
22.00
23.00
28.00
29.00
34.00
35.00
40.00
41.00
52.00
53.00
64.00
65.00
74 -7300-A
11.00
13.25
17.00
19.25
23.00
25.25
29.00
31.25
35.00
37.25
41.00
43.25
53.00
55.25
65.00
67.25
Series
6” Stroke
MAX
Notes
1.
Face/flange actuator may be rotated 90° from arrangement shown.
2.
Face/flange location is set at maximum dimension unless otherwise specified.
3.
Dimensions are for reference only. Contact Dresser Natural Gas Solutions for engineering drawings.
High Potential Test
Note:
1.
Do not apply this test to units equipped with motor
control cards. Tests which involve putting electrical
power to units equipped with motor control cards are
covered by a separate procedure.
2.
Select the voltage setting for the appropriate motor
voltage as indicated on nameplate. Set the selected test
equipment to the selected volts.
3.
With the test equipment ground wire contacting
the gear case plate, contact each test point shown
on wiring diagram. The actuator shall be capable of
withstanding for one second per test point, without
breakdown, the applied voltage from Table 1.
Table 12 - HIPOT Testing Specifications
Circuit
Voltage
Test
Duration/
Test Point
Test Voltage
(AC) setting
Max
Acceptable
Leakage
12 VDC
One Second
1000 Volts
10.33 mA
24 VDC
One Second
1000 Volts
10.33 mA
120 VAC 1PH
One Second
1200 Volts
10.33 mA
220 VAC 1PH
One Second
1200 Volts
10.33 mA
220 VAC 3PH
One Second
1200 Volts
10.33 mA
460 VAC 3PH
One Second
1200 Volts
10.33 mA
575 VAC 3PH
One Second
1200 Volts
10.33 mA
22 | Dresser Natural Gas Solutions
Motor power circuits are to be tested based on the
motor voltage (AC). Dielectric strength tests may be
made by applying a direct current (DC) voltage instead
of an alternative current (AC) voltage, provided that the
voltage used is 1.414 times the values specified above.
See wiring diagram for test points.
Ground Continuity
1.
Verify continuity between actuator ground
lug and ground.
Functional Test
1.
Electrically energize the actuator.
2.
Drive the actuator over the full range of motion.
Andco 7000 Series Technical Specifications
-40 to 140°F
Temperature Rating
-40 to 60°C
20% Relative Humidity @ 40°C
US/Canadian Installations
Electrical Ratings
Motors
Voltage
Current (FL)
Frequency
7102S, 7202S, 7302S
120V 1Ph
5.0A
60HZ
230V 3Ph
6.0A
60HZ
380V 3Ph
3.0A
50HZ
460V 3Ph
3.0A
60HZ
575V 3Ph
2.4A
60HZ
230V 3Ph
8.0A
60HZ
380V 3Ph
4.2A
50HZ
460V 3Ph
5.2A
60HZ
575V 3Ph
3.5A
60HZ
7105T, 7205T, 7210T,
7310T
7317T, 7324T
Class F Insulation
Motors
Internal Thermal Switch (130°C)
NEMA D Design
Duty Cycle
25%
C2D1 Groups E,F,&G Dust Ignition Proof, T4A
Type 4 Watertight
Certifications - North
America
CSA Certificate
US Certificate
CSA C22.2 No. 0
ANSI/UL 61010-1
CSA C22.2 No. 25
UL50 & UL50E
CSA C22.2 No. 94
FM 3600
CSA C22.2 No. 142
FM 3616
Clevis & pin on drive rod end
Mounting Types
Clevis mount on motor end
Trunnion (adjustable)
Face/Flange (Adjustable)
Positran V051 (4-20ma)
Control & Position
Cards
SCC05 Modbus (US only)
SCC10 (US only)
ACT-100 w/Modbus
Weight
Options
50 - 625 lbs dependent of model, length of extension rod & options
Oversize Clevis
Manual Overirde
Andco Series 7000 IOM NGS.IPG.0032 | 23
Industrial Products Group
Andco Actuators
16240 Port Northwest Drive
Houston, TX 77041
T: 832-590-2306
Toll Free: 1-800-945-9898
F: 713-849-2879
© 2018 Natural Gas Solutions North America, LLC – All rights reserved. Natural
Gas Solutions reserves the right to make changes in specifications and features
shown herein, or discontinue the product described at any time without notice
or obligation. Contact your Dresser Natural Gas Solutions representative for the
most current information. The Dresser Logo and all Trademarks containing the
term “Dresser” are the property of Dresser, LLC, a subsidiary of Baker Hughes,
a GE Company.
www.dresserngs.com
Andco Series 7000 IOM NGS.IPG.0032a
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