PR14™ First Stage Regulator

PR14™ First Stage Regulator
PR14™
First Stage Regulator
MAINTENANCE AND REPAIR
For More Information, call 1-800-MSA-2222 or Visit Our Website at www.MSAsafety.com
CRANBERRY TWP., PENNSYLVANIA, U.S.A. 16066
TAL 1403 (L) Rev. 5
© MSA 2014
Prnt. Spec. 10000005389(I) Mat. 10093085
Doc. 10093085
PR14 FIRST STAGE REGULATOR
Replacement Kits
PR14 First Stage Regulator Replacement Kit
10053736 PR14 First Stage Regulator (Complete)
PR14 First Stage Regulator Kit
10050616 Seat
633553
O-Ring (Bottom)
10058236 O-Ring (Top)
10050617 Piston
10052365 O-Ring (2 Req’d)
10065408 10052364 O-Ring
10051663 Inlet Filter
10052367 Inlet Filter O-Ring
10053273 O-Ring (2 Req’d)
63198
O-Ring (2 Req’d)
635278
Back Up Ring (2 Req’d)
10052622 Screw (2 in Kit)
10052621 Seal Ring
10047898 Slider
10055563 Screw (2 Req’d)
10055349
10014878 Flat Washer (2 Req’d)
631356
Lock Washer (2 Req’d)
TAL 1403 (L) Rev. 5 - 10093085
Parts List
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
19a
P/N
Description
10050623 Regulator Cap
10052365 O-Ring (2 Req’d)
10050617 Piston
10052364 O-Ring
10050620 Outer Spring
10050621 Inner Spring
10052621 Seal Ring
10050615 Regulator Body
10053273 O-Ring
10053426 Pressure Relief Valve*
10052367 Inlet Filter O-Ring
10051663 Inlet Filter
10058236 O-Ring (Top)
633553
O-Ring (Bottom)
10050616 Seat
10050622 U-Clip (2 Req’d)
63198
O-Ring (2 Req’d)
635278
Back Up Ring (2 Req’d)
10082852 High Pressure Hose*
10083121 High Pressure Hose for Quick-Fill*
10051882 Intermediate Pressure Hose, Threaded*
10051883 Intermediate Pressure Hose, Quick-Connect*
10051884 Intermediate Pressure Hose, ExtendAire™ System*
20
10089107 Intermediate Pressure Hose, Single
10082526 FireHawk M7 Responder Intermediate Pressure Hose Assembly
21
10052622 Screw (2 Req’d)
22
10051664 Mounting Bracket
23
10047898 Slider
24
631356
Lock Washer (2 Req’d)
25
10014878 Washer (2 Req’d)
26
10055563 Bolt (2 Req’d)
29787
Loctite 222
604070
Christo-Lube
600920
Leak Detector
10069386 PR14 Test Bracket
* Includes Back-Up and/or O-Rings as needed.
2
PR14 FIRST STAGE REGULATOR
26
25
24
23
22
2
3
To C
ontro
l Mod
ule, G
auge
, etc.
20
To S
econ
d St
age
Reg
ulato
r
Carr
ie
r
21
17
7
5
19a
18
9
4
19
16
Christo-Lube
Christo-Lube
1
38-42 ft-lbs
Christo-Lube
6
15
8
Christo-Lube
13
9
14
12
16
11
10
Christo-Lube
From Audi-Larm Audible Alarm
3
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
Table of Contents
DISASSEMBLY
PR14 First Stage Regulator ...........................................4
Mounting Bracket...........................................................4
Intermediate Pressure Hose and High Pressure
Control Module Hose ...................................................5
High Pressure Audi-Larm™ Audible Alarm Hose
and Pressure Relief Valve ............................................5
Regulator Cap and Seal Ring.........................................6
Piston, Piston O-Rings, and Springs .............................7
Seat and Seat O-Rings ..................................................7
REASSEMBLY
Seat and Seat O-Rings ..................................................8
Piston, Piston O-Rings, and Springs .............................8
Regulator Cap and Seal Ring.........................................9
Pressure Relief Valve....................................................10
Inlet Filter and O-Ring ..................................................10
High Pressure Audi-Larm Hose ...................................10
High Pressure Control Module Hose ...........................11
Intermediate Pressure Hose.........................................11
Mounting Bracket.........................................................12
PR14 First Stage Regulator .........................................12
Testing and Adjusting the First Stage Static Pressure
Connecting the Test Manifold Assembly, Threaded Hose...........13
Connecting the Test Manifold Assembly,
Quick-Connect and Extend-Aire Firehawk Hoses .......13
Connecting the Test Manifold Assembly,
FireHawk M7 Responder..............................................14
Adjusting the First Stage Static Pressure ....................14
Disconnecting the Test Manifold Assembly .................14
Threaded Hose.............................................................14
Quick-Connect and ExtendAire™ Hoses.....................15
2. Remove the regulator from the mounting bracket.
3. Remove residual thread-locking material from the
screws.
4. Remove residual thread-locking material from the
regulator body threads.
Note: Depressurize the Air Mask before maintenance or
repair.
• Close the cylinder valve.
• Squeeze the shut-off buttons.
• Open the bypass.
• Disconnect the Audi-Larm Audible Alarm.
Note: If necessary, use compressed air to remove threadlocking material and other fragments.
Removing the Mounting Bracket
DO NOT attempt to maintain or repair the Air Mask
while pressurized. Attempting to disassemble a
pressurized Air Mask can cause parts to become
airborne or swing at very high rates of speed. Failure to
follow this warning can result in serious personal injury
or death.
Remove the regulator from the mounting bracket. (See
Removing the PR14 First Stage Regulator for
instructions.)
1. Use a 7/16” wrench to
remove the mounting
bracket bolts.
DISASSEMBLY
Removing the PR14 First Stage Regulator
To remove the PR14 First Stage Regulator from the
carrier:
2. Remove the mounting bracket.
1. Use a Phillips
screwdriver to remove
the screws.
TAL 1403 (L) Rev. 5 - 10093085
4
PR14 FIRST STAGE REGULATOR
3. Remove the plastic
slider.
4. Discard the o-ring.
4. Remove residual thread-locking material from the
bolts and mounting bracket threads.
Removing the Intermediate Pressure Hose and High
Pressure Control Module Hose
5. Pull the hose firmly to
remove it from the
regulator body.
1. Remove the u-clip.
6. Use the o-ring removal tool to remove the o-ring and
back-up ring from the hose fitting.
2. Pull the hose firmly to
remove it from the
regulator body.
Note: Be careful not to damage the o-ring sealing
surfaces.
7. Discard the o-ring and back-up ring.
Removing the High Pressure Audi-Larm™ Audible
Alarm Hose and Pressure Relief Valve
3. Use the o-ring removal tool to remove the o-ring.
Note: Be careful not to damage the o-ring sealing
surfaces.
1. Remove the u-clip.
5
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
Removing the Regulator Cap and Seal Ring
2. Pull the hose firmly to remove it from the regulator
body.
3. Use the o-ring removal tool to remove the o-ring and
back-up ring from the hose fitting.
1. Mount the PR14 Regulator body in a vise.
Note: Use electrical tape or rubber sleeves on the jaws of
the vise.
2. Use a 1 5/8” 6-point
socket and breaker
bar to remove the cap.
Note: Be careful not to damage the o-ring sealing
surfaces.
4. Discard the o-ring and back-up ring.
3. Use the o-ring removal
tool to remove the cap
o-ring.
5. Use the o-ring removal
tool to remove the filter
o-ring.
Note: Be careful not to damage the o-ring sealing
surfaces.
6. Discard the o-ring.
7. Allow the filter to drop out.
8. Discard the filter.
4. Discard the o-ring.
9. Pull the relief valve
firmly to remove it from
the regulator body.
5. Remove the seal ring.
Note: Be careful not to damage the seal ring sealing
surfaces.
10. Use the o-ring removal tool to remove the o-ring.
11. Discard the o-ring.
Note: Be careful not to damage the o-ring sealing
surfaces.
TAL 1403 (L) Rev. 5 - 10093085
6
PR14 FIRST STAGE REGULATOR
Removing the Piston, Piston O-Rings, and Springs
6. Remove the inner spring and outer spring.
1. Screw the mounting
screw (10-32 thread)
partially into the piston
head.
Removing the Seat and Seat O-Rings
2. Pull gently on the mounting screw to extract the
piston from the regulator body.
Note: Be careful not to damage the regulator body sealing
surfaces.
1. Use a 1/4” hex
wrench to remove the
seat from the regulator
body.
Be careful not to damage the piston.
3. Use the o-ring removal
tool to remove the
piston seat o-ring.
Be careful not to damage
the seat edge.
2. Use the o-ring removal tool to remove the top seat oring.
4. Use the o-ring removal
tool to remove the
piston head o-ring.
Note: Be careful not to
damage the o-ring sealing
surfaces.
Note: Be careful not to damage the o-ring sealing
surfaces.
5. Discard all o-rings.
3. Use o-ring removal tool to remove the bottom seat oring.
7
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
Note: Be careful not to damage the seat.
2. Use a 1/4” hex wrench to screw the seat into the
regulator body until it stops.
3. Back the seat out one turn.
Note: Be careful not to
damage the o-ring sealing
surfaces.
4. Continue to unscrew
the seat as necessary
to align a seat hex
point with the regulator
body scribe line.
4. Discard both rings.
REASSEMBLY
Installing the Seat and Seat O-Rings
Seat:
P/N 10050616
Top O-Ring:
P/N 10058236
Bottom O-Ring:
P/N 633553
Note: After replacing or reinstalling the seat the regulator
MUST be tested and adjusted. Reassemble the regulator,
and test and adjust. (See Testing and Adjusting the First
Stage Static Pressure for instructions.)
1. Install the new seat (P/N 10050616).
a. Apply Christo-Lube (P/N 604070) to the new o-ring
(P/N 633553).
Installing the Piston, Piston O-Rings, and Springs
Piston:
P/N 10050617
O-Rings:
P/N 10052364
P/N 10052365
Outer Spring:
P/N 10050620
Inner Spring:
P/N 10050621
b. Install the bottom
o-ring. Use o-ring
tool (P/N 10120425)
1. Apply Christo-Lube
(P/N 604070) to the
piston bore.
Note: Be careful not to damage the seat.
c. Apply Christo-Lube (P/N 604070) to the new top
seat o-ring (P/N 10058236).
2. Apply Christo-Lube (P/N 604070) to both ends of the
outer spring (P/N 10050620).
d. Install the new
o-ring. Use o-ring
tool (P/N 10120424)
TAL 1403 (L) Rev. 5 - 10093085
3. Install the spring into
the regulator body.
8
PR14 FIRST STAGE REGULATOR
4. Apply Christo-Lube (P/N 604070) to both ends of the
inner spring (P/N 10050621).
8. Remove the tape or
protective paper.
5. Install the spring into
the regulator body.
9. Install the piston into the regulator body.
6. Apply Christo-Lube
(P/N 604070) to the
new piston head o-ring
(P/N 10052365) and
install new o-ring.
Installing the Regulator Cap and Seal Ring
Regulator Cap P/N10050623
O-Ring
P/N 10052365
Seal Ring:
P/N10052621
7. Apply Christo-Lube (P/N 604070) to the new piston
shaft o-ring (P/N 10052364).
a. Cover the piston sensing holes with tape.
1. Install the seal ring
onto the regulator
body.
b. Install the new
o-ring.
Note: Ensure that the flat surface faces out.
Note: If o-ring tool (P/N 10120426) is used disregard substeps a and b.
2. Apply a small amount of Christo-Lube (P/N 604070) to
the new cap o-ring (P/N 10052365).
Be careful not to damage the piston seat.
3. Install the o-ring.
9
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
Note: Ensure that the o-ring is completely seated.
4. Screw the cap onto the regulator body.
5. Secure the regulator body in a vise.
Note: Use electrical tape or rubber sleeves on the jaws of
the vise.
2. Install the filter o-ring
into port and seat it
against the filter.
6. Use a foot-pound
torque wrench and 15/8” six-point socket
to tighten the cap to
38-42 ft lbs.
Note: Do not lubricate the filter o-ring.
Installing the High Pressure Audi-Larm Hose
Back Up Ring
P/N 635278
O-Ring
P/N 63198
1. Install the new back-up ring (P/N 635278).
2. Apply Christo-Lube (P/N 604070) to the high pressure
hose o-ring.
3. Install the new o-ring (P/N 63198).
Installing the Pressure Relief Valve
Pressure Relief Valve
P/N 10053426
O-Ring
P/N 10053273
1. Apply Christo-Lube (P/N 604070) to the pressure relief
valve o-ring (P/N 10053273).
2. Install the new o-ring.
4. Install the high
pressure Audi-Larm
hose into the high
pressure supply port.
3. Install the pressure
relief valve (P/N
10053426) into the
intermediate pressure
port.
Note: The high pressure supply port is labeled “HP IN.”
Installing the Inlet Filter and O-Ring
Inlet Filter
P/N 10051663
Inlet Filter O-Ring
P/N 10052367
5. Install the u-clip to
secure the hose and
valve.
1. Install the filter into the
high pressure supply
port with the cone
pointing in.
TAL 1403 (L) Rev. 5 - 10093085
Installing the High Pressure Control Module Hose
High Pressure Gauge Hose:
P/N 10082852
O-Ring:
P/N 63198
Back-Up Ring
P/N 635278
High Pressure Gauge Hose
P/N 10083121
for Quick-Fill
10
PR14 FIRST STAGE REGULATOR
1. Install the new backup ring.
2. Install the new o-ring.
2. Apply Christo-Lube (P/N 604070) to the high pressure
hose o-ring
3. Install the intermediate
pressure hose into the
intermediate pressure
port.
3. Install the new o-ring.
4. Install the U-clip to
secure the high
pressure and
intermediate pressure
hoses.
4. Install the high
pressure gauge hose
into the high pressure
gauge port.
5. Leak test the regulator.
Note: The regulator cannot be leak tested while installed
because the seat is inaccessible. (Refer to the Air Mask
Leak Testing document P/N 10093091 for instructions.)
Note: The high pressure gauge port is not labeled.
Installing the Intermediate Pressure Hose
Intermediate Pressure Hose
Threaded:
P/N
Quick Connect:
P/N
ExtendAire System:
P/N
O-Ring:
P/N
10051882
10051883
10051884
10053273
1. Apply Christo-Lube (P/N 604070) to the intermediate
pressure hose o-ring (P/N 10053273).
11
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
Installing the Mounting
Bracket
Slider
Screws (2)
Washer (2)
Lock Washer (2)
Loctite 222
Bracket
P/N 10051664
P/N 10047898
P/N 10055563
P/N 10014878
P/N 631356
P/N 29787
Installing the PR14 First Stage Regulator
PR14 First Stage Regulator
Replacement Kit
P/N 10053736
1. Position the regulator on the mounting bracket.
a. Align the regulator
mounting holes with
the mounting
bracket holes.
1. Install the plastic slider
onto the carrier rail.
2. Apply Loctite 222 (P/N 29787) to each screw.
Note: Ensure that the word “TOP” is visible.
Note: New screws have a pre-applied thread-locker and
do not require Loctite 222 application.
3. Install the screws through the mounting bracket into
regulator.
2. Position the mounting
bracket against the
carrier rail.
4. Tighten the screws to
35-45 in lbs.
Note: New bolts have a pre-applied thread-locker and do
not require Loctite 222 application.
Testing and Adjusting the First Stage Static Pressure
3. Apply Loctite 222 (P/N 29787) to each bolt.
4. Insert the bolts through the lock washers (P/N
631356), flat washers (P/N 10014878), and slider (P/N
10047898) into the mounting bracket (P/N 10051664).
Note: All static pressure adjustments must be made with
the PR14 first stage regulator removed from the mounting
bracket.
DO NOT pressurize the system until all hoses and
fittings are properly and secured with u-clips.
Pressurizing the system with unsecured hoses can
cause the hoses to release explosively. Properly install
and secure with u-clips all hoses and fittings before
pressurizing the system. Failure to follow this warning
can result in serious personal injury or death.
5. Use a torque wrench
and 7/16” socket to
tighten the bolts to 35
±5 in lbs.
6. Ensure the mounting bracket slides freely.
TAL 1403 (L) Rev. 5 - 10093085
12
PR14 FIRST STAGE REGULATOR
Connecting the Test Manifold Assembly, Threaded
Hose
Connecting the Test Manifold Assembly, QuickConnect and Extend-Aire Hoses
1. Use 3/4” wrenches to
disconnect first stage
intermediate pressure
hose from the 2nd
stage hose.
1. Disconnect the 2nd
stage hose from first
stage intermediate
pressure hose.
2. Screw the test
manifold assembly
onto first stage
intermediate pressure
hose until tight.
2. Connect test manifold
assembly to first stage
intermediate pressure
hose.
3. Screw the 2nd stage
hose onto test
manifold assembly
until tight.
3. Connect the 2nd stage
hose to test manifold
assembly.
4. Connect the test
manifold assembly to
PosiChek3
4. Connect the test
manifold assembly to
PosiChek3
intermediate pressure
hose.
intermediate pressure
hose.
13
TAL 1403 (L) Rev. 5 - 10093085
PR14 FIRST STAGE REGULATOR
TROUBLESHOOTING
Connecting the Test Manifold Assembly, FireHawk M7
Responder
Adjusting the First Stage Static Pressure
Note: Depressurize the system before making static
pressure adjustments.
Note: When adjusting the regulator seat, always align a
seat hex point with the line scribed on the regulator body
to ensure that the mounting bracket satisfactorily engages
and retains the regulator seat.
1. Disconnect the 2nd
stage hose from first
stage intermediate
pressure hose.
1. To DECREASE first stage static pressure, rotate the
regulator seat CLOCKWISE.
2. To INCREASE first
stage static pressure,
rotate the regulator
seat COUNTER CLOCKWISE.
2. Connect test manifold
assembly to first stage
intermediate pressure
hose.
Note: One hex point equals approximately 3 psi.
For Static Medium Pressure:
- 2216 psi range 77 - 91 psi
- 3000 psi range 80 - 94 psi
- 4500 psi range 85 - 100 psi
- and dynamic breathing tests (lower graph)
3. Connect the 2nd stage
hose to test manifold
assembly.
If creeping, replace piston P/N 10050617 including piston
o-rings P/N 10052365 and 10052364. If still creeping,
replace seat P/N 10050616 and o-rings 10058236 and
633553. If still does not meet specification due to
creeping, overhaul PR-14.
Disconnecting the Test Manifold Assembly
Threaded Hose
4. Connect the test
manifold assembly to
PosiChek3
intermediate pressure
hose.
1. Verify that the system is depressurized.
2. Unscrew the 2nd stage
hose from the test
manifold assembly.
TAL 1403 (L) Rev. 5 - 10093085
14
PR14 FIRST STAGE REGULATOR
Quick-Connect and ExtendAire Hoses
3. Replace the 2nd stage hose o-ring (P/N 63198). Apply
Christo-Lube (P/N 604070) to the new o-ring.
1. Ensure that the system is depressurized.
4. Unscrew the test
manifold assembly
from the first stage
intermediate pressure
hose.
2. Disconnect the 2nd
stage hose from the
test manifold assembly.
5. Screw the 2nd stage
hose onto the first
stage intermediate
pressure hose. Use the
inch pound torque
wrench and 3/4”
crowfoot to tighten
the threaded
connection to 125 ± 5
in lbs.
3. Disconnect the test
manifold assembly
from the first stage
intermediate pressure
hose.
6. Install the first stage regulator to the mounting
bracket. (Refer to Installing the PR14 First Stage
Regulator section for instructions.)
7. Test the system for leaks. (Refer to the Air Mask Leak
Testing document P/N: 10093091 for instructions.)
4. Connect the Firehawk hose to the first stage
intermediate pressure hose.
5. Install the first stage regulator onto the mounting
bracket. (Refer to Installing the PR14 First Stage
Regulator section for instructions.)
6. Test the system for leaks. (Refer to the Air Mask Leak
Testing document P/N: 10093091 for instructions.)
15
TAL 1403 (L) Rev. 5 - 10093085
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