Graco XM PFP 273231 Use and care manual

3A8047B
EN
Repair and Parts
XM™ PFP
55 Gallon (208 Liter) Feed System
For spraying two-component passive fire protection (PFP) intumescent epoxies. For
professional use only.
See page 3 for model information, including maximum working pressure and approvals.
Important Safety Instructions
Read all warnings and instructions in this
manual and in all supplied manuals before
using the equipment. Save all instructions.
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Related Manuals
2 3A8047B
Contents
Related Manuals . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Models . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Keep Components A and B Separate . . . . . . . . . . . . . . 7
Components A and B . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Changing Materials . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
General Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Component Identification . . . . . . . . . . . . . . . . . . . . . . . 8
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Pressure Relief Procedure . . . . . . . . . . . . . . . . . . . . . . . . . 9
Flush Mixed Material . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Repair. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Replace Air Filter Element . . . . . . . . . . . . . . . . . . . . . . 13
User Interface/Control Box . . . . . . . . . . . . . . . . . . . . . 14
Junction Box . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Air Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Dosing Valve Assembly . . . . . . . . . . . . . . . . . . . . . . . . 21
Sensors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Pump Assembly (System Module). . . . . . . . . . . . . . . . 23
Drum Feed RAM Pump Assembly (Feed Module) . . . . 24
Flush Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Heaters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
Replace Radar Level Sensor . . . . . . . . . . . . . . . . . . . . 26
Set Up a New Radar Level Sensor . . . . . . . . . . . . . . . 27
Electrical Schematics . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
AC Power Schematic. . . . . . . . . . . . . . . . . . . . . . . . . . 29
Heater Schematic . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
CAN Network Schematic. . . . . . . . . . . . . . . . . . . . . . . 31
Sensor Schematic Junction Box . . . . . . . . . . . . . . . . . 32
Sensors Schematic Control Box . . . . . . . . . . . . . . . . . 33
Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
XM PFP System Subassemblies . . . . . . . . . . . . . . . . . 37
Base System (262878) Subassembly . . . . . . . . . . . . . 50
Feed Module Sub-Assemblies. . . . . . . . . . . . . . . . . . . 57
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 63
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
Technical Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . 65
Recycling and Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . 66
End of Product Life . . . . . . . . . . . . . . . . . . . . . . . . . . . 66
California Proposition 65 . . . . . . . . . . . . . . . . . . . . . . . . . 66
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 67
Graco Standard Warranty. . . . . . . . . . . . . . . . . . . . . . . . . 68
Graco Information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 68
Related Manuals
Manuals are available at www.graco.com.
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Models
3A8047B 3
Models
System Series Ratio Range Approvals
273231 B 1:1 to 1.5:1
Not for use in explosive atmospheres or
hazardous locations.
Maximum Fluid Working Pressure Maximum Air Working Pressure
A and B Materials:
6000 psi (41 MPa, 414 bar)
Flushing Fluid:
4500 psi (31 MPa, 310 bar)
Heating Fluid:
100 psi (0.7 MPa, 7 bar)
Supply
150 psi (1.0 MPa, 10.3 bar)
Maximum Setpoint
Main Pump: 100 psi (0.7 MPa, 7 bar)
Feed Pump: 65 psi (0.45 MPa, 4.5 bar)

Warnings
4 3A8047B
Warnings
The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The
exclamation point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks.
When these symbols appear in the body of this manual or on warning labels, refer back to these Warnings.
Product-specific hazard symbols and warnings not covered in this section may appear throughout the body of this
manual where applicable.
DANGER
SEVERE ELECTRIC SHOCK HAZARD
This equipment can be powered by more than 240 V. Contact with this voltage will cause death or
serious injury.
• Turn off and disconnect power at main switch before disconnecting any cables and before servicing
equipment.
• This equipment must be grounded. Connect only to grounded power source.
• All electrical wiring must be done by a qualified electrician and comply with all local codes and
regulations.
WARNING
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. Paint or
solvent flowing through the equipment can cause static sparking. To help prevent fire and explosion:
• Use equipment only in well ventilated area.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic
drop cloths (potential static sparking).
• Ground all equipment in the work area. See Grounding instructions.
• Never spray or flush solvent at high pressure.
• Keep work area free of debris, including solvent, rags and gasoline.
• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes
are present.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail. Do not use pail liners unless they
are anti-static or conductive.
•Stop operation immediately if static sparking occurs or you feel a shock. Do not use equipment
until you identify and correct the problem.
• Keep a working fire extinguisher in the work area.

Warnings
3A8047B 5
WARNING
SKIN INJECTION HAZARD
High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like
just a cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.
• Do not spray without tip guard and trigger guard installed.
• Engage trigger lock when not spraying.
• Do not point gun at anyone or at any part of the body.
• Do not put your hand over the spray tip.
• Do not stop or deflect leaks with your hand, body, glove, or rag.
• Follow the Pressure Relief Procedure when you stop spraying and before cleaning, checking, or
servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses and couplings daily. Replace worn or damaged parts immediately.
BURN HAZARD
Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe
burns:
• Do not touch hot fluid or equipment.
MOVING PARTS HAZARD
Moving parts can pinch, cut or amputate fingers and other body parts.
• Keep clear of moving parts.
• Do not operate equipment with protective guards or covers removed.
• Pressurized equipment can start without warning. Before checking, moving, or servicing
equipment, follow the Pressure Relief Procedure and disconnect all power sources.

Warnings
6 3A8047B
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• Do not operate the unit when fatigued or under the influence of drugs or alcohol.
• Do not exceed the maximum working pressure or temperature rating of the lowest rated system
component. See Technical Specifications in all equipment manuals.
• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all
equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information
about your material, request Safety Data Sheet (SDS) from distributor or retailer.
• Do not leave the work area while equipment is energized or under pressure.
• Turn off all equipment and follow the Pressure Relief Procedure when equipment is not in use.
• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine
manufacturer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and
create safety hazards.
• Make sure all equipment is rated and approved for the environment in which you are using it.
• Use equipment only for its intended purpose. Call your distributor for information.
• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.
• Do not kink or over bend hoses or use hoses to pull equipment.
• Keep children and animals away from work area.
• Comply with all applicable safety regulations.
TOXIC FLUID OR FUMES HAZARD
Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or
swallowed.
• Read Safety Data Sheets (SDSs) to know the specific hazards of the fluids you are using.
• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.
SPLATTER HAZARD
Hot or toxic fluid can cause serious injury if splashed in the eyes or on skin. During blow off of platen,
splatter may occur.
• Use minimum air pressure when removing platen from drum.
PERSONAL PROTECTIVE EQUIPMENT
Wear appropriate protective equipment when in the work area to help prevent serious injury, including
eye injury, hearing loss, inhalation of toxic fumes, and burns. Protective equipment includes but is not
limited to:
• Protective eyewear, and hearing protection.
• Respirators, protective clothing, and gloves as recommended by the fluid and solvent
manufacturer.
WARNING

Warnings
3A8047B 7
Keep Components A and B
Separate
Components A and B
IMPORTANT!
Material suppliers can vary in how they refer to plural
component materials.
Be aware that in this manual:
Component A refers to resin or major volume.
Component B refers to the hardener or minor volume.
This equipment doses the B component into the A
component flow. An integration hose must always be
used after the mix manifold and before the static mixer.
Changing Materials
Cross-contamination can result in cured material in
fluid lines which could cause serious injury or
damage equipment. To prevent cross-contamination:
•Never interchange component A and component
B wetted parts.
• Never use solvent on one side if it has been
contaminated from the other side.
NOTICE
Changing the material types used in your equipment
requires special attention to avoid equipment damage
and downtime.
• When changing materials, flush the equipment
multiple times to ensure it is thoroughly clean.
• Always clean the fluid inlet strainers after flushing.
• Check with your material manufacturer for
chemical compatibility.
• When changing between epoxies and urethanes or
polyureas, disassemble and clean all fluid
components and change hoses. Epoxies often
have amines on the B (hardener) side. Polyureas
often have amines on the B (resin) side.

General Information
8 3A8047B
General Information
Component Identification
See your operation manual for component
identification.
Grounding
All components shipped from the factory are electrically
bonded through ground wires. Ground the electrical
connection properly according to local codes.
The equipment must be grounded to reduce the risk
of static sparking and electric shock. All internal earth
grounding must use only copper wires. See
Electrical Schematics,page 29, for wire size.
Electric or static sparking can cause fumes to ignite
or explode. Improper grounding can cause electric
shock. Grounding provides an escape wire for the
electric current.

Pressure Relief Procedure
3A8047B 9
Pressure Relief Procedure
Follow the Pressure Relief Procedure
whenever you see this symbol.
1. Engage trigger lock.
2. If the system will be shut down for more than a
few hours, perform Park Fluid Pump Rods
procedure in XM PFP Operation manual to prevent
fluid hardening on the pump shaft.
3. Press (Stop button).
4. Slide the feed pump air supply valve (DF) and
director valve air supply valve (DA) to the OFF
position.
5. If necessary to relieve tank air pressure: close
both feed system air control ball valves (CT, CS)
and back out the air pressure regulator (CP). Open
the valves on the tank lids for full tank
de-pressurization. Pressure gauge (CR) should read
0 psi.
6. Open mix manifold ball valves.
This equipment stays pressurized until pressure is
manually relieved. To help prevent serious injury from
pressurized fluid, such as skin injection, splashing
fluid and moving parts, follow the Pressure Relief
Procedure when you stop spraying and before
cleaning, checking, or servicing the equipment.
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DF
DE
DC
DB
DA
DD
WLD
NOTICE
The material may expand when air pressure is
removed. This can cause the tank to overfill and
damage the parts attached to the tank lid. To
prevent overfilling the tank, never relieve air
pressure in the tank unless the tank is less than half
full. Verify tank material level on the user interface
Supply Screen.
FEED PUMP
BYPASS
ti20127a
CR
CP CS
CT
ti20128a

Pressure Relief Procedure
10 3A8047B
7. Open recirculation ball valves.
8. Disengage trigger lock.
9. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger gun to relieve pressure in
material hoses. Use a pail lid with a hole to
dispense through. Seal around hole and gun with a
rag to prevent splash back.
10. Engage trigger lock.
11. Close mix manifold material ball valves.
12. Perform Flush Mixed Material procedure on page
11 to prevent mixed material curing in the system
and to relieve pressure in the solvent lines.
13. If the system will be shutdown for more than a few
hours, fill pump A and B packing nuts with throat
seal liquid (TSL™).
NOTE: Fluid pressure in the system is now relieved.
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TI19265a1
WLLD
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TI19265a2
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Flush Mixed Material
3A8047B 11
Flush Mixed Material
This procedure flushes out mixed material from system
to prevent it from curing in the system.
NOTE: Pot life of the mixed materials in the system is
much shorter than the dry time of dispensed epoxy
because mixed material potlife or working time
decreases with increased temperature.
Follow this procedure when you are finished spraying if
the potlife of the mixed materials in the system could
expire before you spray again.
1. If necessary, Prime Flush Pump. See operation
manual for instructions.
2. Press to stop the metering pumps.
3. Trigger gun into a waste container to relieve
pressure then engage trigger lock.
4. Remove spray tip.
5. Close mix manifold ball valves.
6. Open one of the flush ball valves on the mix
manifold.
7. Disengage trigger lock and trigger gun into a
grounded pail. Use a pail lid with a hole to dispense
through. Seal around hole and gun with a rag to
prevent splash back.
8. Open flush pump air supply valve (CB). Pull out and
slowly turn flush pump air regulator (CG) clockwise
to increase air pressure. Use lowest pressure
needed to flush material out of hose.
9. Continue dispensing until clean flushing fluid is
dispensed.
10. Close the open flush valve. Open the other flush
valve. Continue dispensing long enough for any
remaining mixed material.
11. Close flush pump air supply valve.
To avoid fire and explosion:
• Flush equipment only in a well-ventilated area.
• Ensure main power is off and heater is cool before
flushing.
• Do not turn on heater until fluid lines are clear of
solvent.
ti20129a
CB CG
TI1953a
TI19265a1

Troubleshooting
12 3A8047B
12. Trigger gun to relieve pressure in flush lines then
engage trigger lock.
13. Close flush ball valves.
14. Use a rag and solvent to clean spray tip then
reinstall on gun.
15. Remove the static mixer. Clean the mix element
then re-install the mixer.
Troubleshooting
NOTE: For troubleshooting details, see your operation
manual.
TI19265a2
ti20095a

Repair
3A8047B 13
Repair
NOTE: For detailed repair information for your ram
assembly, see your Supply Systems repair and parts
manual.
Follow Pressure Relief Procedure on page 9 if service
time may exceed pot life time, before servicing fluid
components, and before transporting sprayer.
Replace Air Filter Element
There are two air filters on all systems: the inlet air
regulator filter on the air controls and the main air inlet
manifold filter. Check filters weekly and replace element
as needed.
Control Air Regulator Filter
1. Close main air shutoff valve on air supply line and
the main air shutoff valve (E).
2. Remove four nuts (21) and then remove front and
rear shrouds (19, 20).
3. Unscrew filter bowl from inlet air regulator (601d).
4. Remove and replace element.
5. Screw filter bowl on securely.
6. Replace front and rear shrouds (19, 20) using four
nuts (21).
Main Air Inlet Manifold Filter
1. Close the main air shutoff valve on the air supply
line and the main air shutoff valve (E).
2. Unscrew filter bowl collar from main air inlet
filter (14).
3. Remove and replace filter element (701a). See Air
Filter (24P899), page 55.
4. Reassemble filter bowl.
To reduce the risk of serious injury, do not service air
filter until air line is depressurized. Removing a
pressurized air filter bowl could cause serious injury.
E
21
20
19
Filter Bowl
and Element
644a
14
ti199526a1

Repair
14 3A8047B
User Interface/Control Box
Remove Shroud and Front Panel of Control
Box
1. Close main air shutoff valve on air supply line and
on system. Depressurize air line.
2. Disconnect power.
3. Remove four nuts (21) and then remove front and
rear shrouds (19, 20).
4. Remove four nuts (17); leave two nuts on left side of
panel tight. Open front panel of control box (16).
Replace Single Solenoid Module
1. Remove Shroud and Front Panel of Control Box,
see page 14.
2. Disconnect solenoid cable connector (542) from the
solenoid (509a) being replaced. See Electrical
Schematics if necessary. See Sensors Schematic
Control Box on page 33.
3. Remove two screws (509b) from the solenoid being
replaced then remove solenoid (509a). See FIG. 4.
4. Use screws (509b) to install new solenoid (509a).
5. Reconnect solenoid cable connectors (542).
NOTE: From left to right, solenoid functions are as
follows:
- Dosing valve A (DVA) (normally open)
- Dosing valve B (DVB) (normally open)
- Pump A (PA) (normally closed)
- Pump B (PA) (normally closed)
21
20
19
ti19926a1
17
16
ti20158b1
r_xm1a00_312359_313289_9_3
509b
509a
DVA
DVB
PA
PB r_xm1a00_312359_313289_9_3

Repair
3A8047B 15
Replace USB Module
1. Remove Shroud and Front Panel of Control Box,
see page 14.
2. Disconnect CAN cables and USB cable from USB
module (519).
3. Remove two mounting screws from USB module
and remove module from base.
4. Follow steps in reverse order to install new USB
module.
5. Load software. See Replace USB Module.
Replace Fluid Control Module (FCM)
NOTE: The USB module does not need to be removed
prior to replacing the FCM.
1. Remove Shroud and Front Panel of Control Box,
see page 14.
2. Remove all cables from FCM (518). Take note of
cable locations.
3. Loosen four mounting screws (535).
4. Slide FCM up and out of keyhole slots.
5. Follow steps in reverse order to install new FCM.
6. Load software. See Load software. See Replace
USB Module.
7. Most of the system configuration is stored in the
FCM. Use the display to change the configuration
to the values in the old FCM. See XM PFP
operation manual for instructions.
Replace Alarm
1. Remove Shroud and Front Panel of Control Box,
see page 14.
2. Disconnect alarm wires from alarm (517).
3. Unscrew alarm (517) and replace.
4. Screw in new alarm. Reconnect alarm wires.
5. Reinstall front panel of control box and reinstall
shrouds.
519
518
535
535
517

Repair
16 3A8047B
Display
Replace Display Battery
1. Remove four screws (504f) then remove access
cover (504e).
2. Use a flat head screwdriver to pry out old battery.
3. Replace with new battery. Ensure battery fits under
connector tabs before snapping other end in place.
NOTE: Use only Panasonic CR2032 batteries for
replacement.
4. Use screws (504f) to install access cover (504e).
Replace Display
Order display kit (504) for replacement.
1. Disconnect power.
2. Remove Control Box Shrouds, see page 19.
3. Disconnect CAN cable from display module.
4. Remove four screws (504f) from rear display panel
(504c) while holding front display panel (504d) in
place.
NOTE: To ease removal use clear tape to hold front
display panel (504d) in place.
5. Remove rear display panel (504c) and disconnect
display cable and key switch cable (539) from
circuit board.
NOTICE
To avoid damaging circuit board, wear a grounding
strap.
504f
504e
Battery
r_xm1a00_312359_313289_2a
Connector
Tabs
Remove Old Battery
Insert New Battery
NOTICE
To avoid damaging circuit board, wear a grounding
strap.
r_312359_313289_24a
504f
504d
504c

Repair
3A8047B 17
6. Remove front display panel (504d) and
gasket (504g).
7. Discard old display assembly.
8. Place new front display panel (504d) and
gasket (504g) on front panel of control box (16).
NOTE: To ease installation use clear tape to hold front
display panel in place.
9. Carefully connect display cables and key switch
cable to new circuit board.
10. Install new rear display panel (504c) and secure
with four screws (504f). Ensure key switch cable
protrudes from opening in top of display module.
11. Install access cover and screws.
12. Reconnect CAN cable to display module.
13. Reconnect power.
14. Load software. See Upgrade Software, page 17.
15. Replace shroud.
16. Configure system settings as they were set on old
display. See XM PFP Operation manual for
instructions.
Replace Front Panel
See Replace Display, page 16, for instructions.
Upgrade Software
1. Download all USB logs. The new software will erase
the USB logs. See operation manual for
instructions to Download Data from USB.
2. Turn off power to the system.
3. Remove Shroud and Front Panel of Control Box,
see page 14.
4. Remove four screws (504f) then remove access
cover (504e).
5. Insert and press token (506) firmly into slot.
NOTE: There is no preferred orientation of token.
6. Turn power on.
7. The red indicator light (L) will flash until new
software is loaded on the display module.
8. All system modules will be automatically updated.
See Graco Control Architecture Module
Programming manual for details.
9. Remove token.
10. Reinstall shrouds and front panel.
r_xm1a00_312359_313289_25a
504b
504c
504g
504d
Display Cable 539
L
506
504f
504e
Battery
r_xm1a00_312359_313289_2a

Repair
18 3A8047B
Junction Box
Replace High Power Temperature Control
Module (HPTCM, ref. 435)
1. Turn system main power switch OFF.
2. Open junction box.
3. Unplug all connections on the HPTCM.
4. Remove screws securing HPTCM then remove
HPTCM.
5. Install HPTCM and reattach HPTCM connections.
6. Close junction box.
Replace Fluid Control Module Cube
(FCM3, ref. 408)
1. Turn system main power switch OFF.
2. Open junction box.
3. Unplug all connections on the FCM3.
4. Remove two screws securing FCM3 then remove
FCM3.
5. Use screws to install FCM3.
6. Reattach FCM3 connections.
7. Close junction box.
All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations.
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Center ground screw in the Fluid Control Module
Cube must be used to avoid serious injury due to
electric shock.
ti26763
Ground screw

Repair
3A8047B 19
Air Controls
Remove Control Box Shrouds
1. Close main air shutoff valve on air supply line and
on system. Depressurize air line.
2. Remove four nuts (21) and then remove front and
rear shrouds (19, 20).
Remove Air Control Assembly (18)
1. Remove Control Box Shrouds.
2. Disconnect air motor air lines and system air line.
3. Remove four nuts (17) from front of air controls (18).
See FIG. 1, page 20.
4. Pull out assembly (18).
5. Follow steps in reverse order to reinstall air control
assembly.
Replace Flush Pump Air Ball Valve (626)
1. Remove Air Control Assembly (18), see page 19.
2. Remove two nuts (630) from front of air control
bracket (619). See FIG. 1, page 20.
3. Disconnect air line (632) running to ball valve
assembly (626).
4. Replace with new ball valve assembly. See part
number shown in the System Air Controls Module
(255761) section beginning on page 50.
5. Follow steps in reverse order to reassemble.
Replace Flush Pump Air Regulator (625)
1. Remove Air Control Assembly (18), see page 19
2. Remove regulator nut (631), and disconnect air
lines (632, 633) running to regulator (625). See FIG.
1 on page 20.
3. Remove regulator assembly and replace with new.
See part number shown in the System Air
Controls Module (255761) section beginning on
page 50.
4. Follow steps in reverse order to reassemble.
Replace System Air Regulator (645)
1. Remove Air Control Assembly (18), see page 19
2. Remove regulator nut and disconnect system air
line. See FIG. 1, page 20.
3. Remove screws from quick clamps and open
clamps (642) at hinge.
4. Remove regulator assembly (645) and replace with
new.
5. Follow steps in reverse order to reassemble.
21
20
19
ti19926a1

Repair
20 3A8047B
Replace Solenoid Inlet Air Regulator (644)
1. Remove Control Box Shrouds, see page 19.
2. Remove Air Control Assembly (18), see page 19.
3. Disconnect air line from air regulator (644).
4. Remove gauge (616) from block (643).
5. Remove screws from quick clamps (642) holding air
regulator assembly (644) in place.
6. Open clamps (642) at hinge and pull apart from
block (643).
7. Remove regulator assembly (644) and replace with
new.
8. Follow steps in reverse order to reassemble.
9. Set new air pressure regulator to at least 80-85 psi
(0.55-0.58 MPa, 5.5-5.8 bar).
FIG. 1: Air Control Assembly (18)
WLD
604
640 631
633
611
617
615
613
606
618
603
609
629
625
620
621 622
617
612
616
610
607 608
635
633 634
635
629
627
628
627
632
636
626
638 632
637
619
618
630 641
646
644
645
642
642
643
647
613
Ref. 27
*160
*177
*161 * Hazardous location only.
642 643
641
643