Graco 311021U User Manual
Repair - Parts
ti24881a
311021U
LineLazer™ IV 200HS Airless Paint Striper
- For application of line stripling materials -
3300 psi (22.8 MPa, 228 bar) Maximum Working Pressure
Important Safety Instructions
Read all warnings and instructions in this manual and in LineLazer,
FieldLazer Operation manual. Be familiar with the controls and the
proper usage of the equipment. Save these instructions
248870
248871
249012
249013
248872
248873
EN
311018
309277
311254
309055
311049
Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Tip Selection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
General Repair Information . . . . . . . . . . . . . . . . . . 6
Grounding . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
SAE O-Ring Installation . . . . . . . . . . . . . . . . . . . 6
Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 7
Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
Digital Tracking System . . . . . . . . . . . . . . . . . . . . 12
ON/OFF Switch . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
PC Board . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
Pressure Control Transducer . . . . . . . . . . . . . . 12
Digital Tracking System . . . . . . . . . . . . . . . . . . . . 13
PC Board Diagnostics . . . . . . . . . . . . . . . . . . . . . . 14
Distance Sensor Adjustment . . . . . . . . . . . . . . . . 15
Gear Alignment . . . . . . . . . . . . . . . . . . . . . . . . . 15
Sensor Height Adjustment . . . . . . . . . . . . . . . . 15
Hydraulic Pump . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Fan Belt . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Hydraulic Motor Yoke . . . . . . . . . . . . . . . . . . . . . . 20
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
Oil/Filter Change . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Gallon Counter . . . . . . . . . . . . . . . . . . . . . . . . . 22
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
Displacement Pump . . . . . . . . . . . . . . . . . . . . . . . . 23
Removal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Parts - LineLazer IV 200HS . . . . . . . . . . . . . . . . . . 25
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 26
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 27
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 28
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 29
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 30
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 31
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 32
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 33
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 34
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 35
Parts Drawing - LineLazer IV 200HS . . . . . . . . . . 36
Parts List - LineLazer IV 200HS . . . . . . . . . . . . . . 37
Pressure Control Wiring Diagram . . . . . . . . . . . . 38
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 40
2 311021U
Warnings
WARNINGWARNINGWARNING
WARNING
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.
FIRE AND EXPLOSION HAZARD
Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help
prevent fire and explosion:
• Use equipment only in well ventilated area.
• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable
and can ignite or explode if spilled on hot surface.
• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic
drop cloths (potential static arc).
• 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.
• Ground equipment and conductive objects in work area. See Grounding instructions.
• Use only grounded hoses.
• Hold gun firmly to side of grounded pail when triggering into pail.
• 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 fire extinguisher in work area.
CARBON MONOXIDE HAZRD
Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon
monoxide can cause death.
• Do not operate in an enclosed area.
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.
PRESSURIZED EQUIPMENT HAZARD
Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and
cause serious injury.
• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,
checking, or servicing equipment.
• Tighten all fluid connections before operating the equipment.
• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.
311021U 3
Warnings
WARNINGWARNINGWARNING
WARNING
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 Data 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 MSDS 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.
BURN HAZARD
Equipment surfaces and fluid that is 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.
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.
RECOIL HAZARD
Gun may recoil when triggered. If you are not standing securely, you could fall and be seriously injured.
CALIFORNIA PROPOSITION 65
The engine exhaust from this product contains a chemical known to the State of California to cause
cancer, birth defects or other reproductive harm.
This product contains a chemical known to the State of California to cause cancer, birth defects or
other reproductive harm. Wash hands after handling.
4 311021U
Tip Selection
in.
(cm)
in.
(cm)
in.
(cm)
in.
(cm)
Tip Selection
LL5213* 2 (5)
LL5215* 2 (5)
LL5217 4 (10)
LL5219 4 (10)
LL5315 4 (10)
LL5317 4 (10)
LL5319 4 (10)
LL5321 4 (10)
LL5323 4 (10)
LL5325 4 (10)
LL5327 4 (10)
LL5329 4 (10)
LL5331 4 (10)
LL5333 4 (10)
LL5335 4 (10)
LL5355 4 (10)
LL5417 6 (15)
LL5419 6 (15)
LL5421 6 (15)
LL5423 6 (15)
LL5425 6 (15)
LL5427 6 (15)
LL5429 6 (15)
LL5431 6 (15)
LL5435 6 (15)
LL5621 12 (30)
LL5623 12 (30)
LL5625 12 (30)
LL5627 12 (30)
LL5629 12 (30)
LL5631 12 (30)
LL5635 12 (30)
LL5639 12 (30)
* Use 100 mesh filter to reduce tip clogs.
311021U 5
General Repair Information
6250
Grounding clamp
water pipe, steel
sign post, or metal
light pole
Fig. 1
General Repair Information
1 Keep all screws, nuts, washers, gaskets, and
electrical fittings removed during repair
procedures. These parts are not normally provided
with replacement assemblies.
2 Test repair after problem is corrected.
3 If sprayer does not operate properly, review
repair procedure to verify procedure was done
correctly. If necessary, see Troubleshooting Guide,
page 8, for other possible solutions.
4 Install belt guard before operation of sprayer and
replace if damaged. Belt guard reduces risk of
pinching and loss of fingers; see preceding
WARNING.
Grounding
Ground sprayer with grounding clamp to earth ground
when flushing sprayer. Fig. 1.
SAE O-Ring Installation
1 Unscrew lock nut to touch fitting.
2 Lubricate o-ring (A).
A
3 Screw in fitting hand tight.
4 Unscrew fitting until oriented properly.
5 Tighten lock nut to indicate torque. (Make sure washer is
seated properly without pinching
o-ring).
311021U 6
Maintenance
Maintenance
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
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.
1. Engage trigger lock.
2. Close the bleed-type master air valve.
3. Disengage the trigger lock.
4. Hold a metal part of the gun firmly to a grounded
metal pail. Trigger the gun to relieve pressure.
5. Engage the trigger lock.
6. Open all fluid drain valves in the system, having a
waste container ready to catch drainage. Leave
drain valve(s) open until you are ready to spray
again.
7. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved:
a. VERY SLOWLY loosen tip guard retaining nut
or hose end coupling to relieve pressure gradually.
b. Loosen nut or coupling completely.
c. Clear hose or tip obstruction.
NOTICE
Minimum hose size allowable for proper sprayer
operation is 3/8 in. x 50 ft.
For detailed engine maintenance and specifications,
refer to separate Honda Engine’s Owner’s Manual,
supplied.
DAILY: Check engine oil level and fill as necessary.
DAILY: Check hydraulic oil level and fill as necessary.
DAILY: Check that displacement pump is tight.
DAILY: Top off TSL level in displacement pump packing
nut to help prevent material buildup on piston rod and
early wear of packing.
AFTER THE FIRST 20 HOURS OF OPERATION:
Drain engine oil and refill with clean oil. Reference
Honda Engines Owner’s Manual for correct oil viscosity.
WEEKLY: Remove engine air filter cover and clean
element and replace, if necessary. If operating in an
unusually dusty environment, check filter daily.
WEEKLY/DAILY: Remove any debris from hydraulic
rod.
AFTER EACH 100 HOURS OF OPERATION:
Change engine oil. Reference Honda Engines Owner’s
Manual for correct oil viscosity.
SEMI-ANNUALLY: Check belt wear, page 18; replace if
necessary.
YEARLY OR 2000 HOURS: Replace hydraulic oil and
filter element with Graco hydraulic oil 169236 (5
gallon/18.9 liter) or 207428 (1 gallon/3.8 liter) and filter
element 246173; page 22.
SPARK PLUG: Use only BPR6ES (NGK) or
W20EPR--U (NIPPONDENSO) plug. Gap plug to
0.028 to 0.031 in. (0.7 to 0.8 mm). Use spark plug
wrench when installing and removing plug.
Caster Wheel
(See letter call-outs in Parts drawing on page 36)
1. Once each year, tighten nut (127, Detail A) until
spring washer bottoms out. Then back off the nut
1/2 to 3/4 turn.
2. Once each year, tighten nut (127) until it beings to
compress spring washer. Then tighten the nut an
additional 1/4 turn.
DAILY: Check hose for wear and damage.
DAILY: Check gun safety for proper operation.
DAILY: Check prime/spray drain valve for proper
operation.
DAILY: Check and fill gas tank
311021U 7
3. Once each month, grease the wheel bearing (F).
4. Check pin (55) for wear. If pin is worn out, there will
be play in the caster wheel. Reverse or replace the
pin as needed.
5. Check caster wheel alignment as necessary. To
align: loosen screw (145), align wheel and tighten
bolt.
Troubleshooting
Troubleshooting
Problem Cause Solution
E=XX is displayed Fault condition exists Determine fault correction from table, page
14.
Gas engine pulls hard (won’t start) Hydraulic pressure is too high Turn hydraulic pressure knob
counterclockwise to lowest setting.
Engine won’t start Engine switch is OFF Turn engine switch ON
Engine is out of gas Refill gas tank. Honda Engines Owner’s
Manual.
Engine oil level is low Try to start engine. Replenish oil, if
necessary. Honda Engines Owner’s Manual.
Engine operates, but displacement
pump does not operate
Displacement pump operates, but output
is low on upstroke.
Spark plug cable is disconnected or
damaged
Cold engine Use choke
Fuel shutoff lever is OFF Move lever to ON position
Oil is seeping into combustion chamber Remove spark plug. Pull starter 3 to 4 times.
Pump valve is OFF Turn pump valve ON.
Pressure setting is too low Turn pressure adjusting knob clockwise to
Fluid filter (11) is dirty Clean filter.
Tip or tip filter is clogged Clean tip or tip filter. Manual 311254
Displacement pump piston rod is stuck
due to dried paint
Belt worn, broken or off pulley Replace.
Hydraulic fluid too low Shut of sprayer. Add fluid*
Hydraulic motor not shifting Set pump valve OFF. Turn pressure down.
Piston ball is not seating Service piston ball. Manual 309277.
Piston packings are worn or damaged. Replace packings. Manual 309277.
Connect spark plug cable or replace spark
plug
Clean or replace spark plug. Start engine.
Keep sprayer upright to avoid oil seepage.
increase pressure. Manual 311018.
Repair pump. Manual 309277
Turn engine OFF. Pry rod up or down until
hydraulic motor shifts.
* Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 7.
8 311021U
Problem Cause Solution
Troubleshooting
Displacement pump operates but output
is low on downstroke and/or on both
strokes.
Pump is difficult to prime Air in pump or hose Check and tighten all fluid connections.
High engine speed at no load Mis-adjusted throttle setting Reset throttle to 3700 - 3800 engine rpm at
Low stall or run pressure shown on
display
Excessive paint leakage into throat
packing nut
Fluid is spitting from gun Air in pump or hose Check and tighten all fluid connections.
Excessive leakage around hydraulic
motor piston rod wiper
Strainer (34a) is clogged Clean strainer.
O-ring in pump is worn or damaged. Replace o-ring. Manual 309277.
Intake valve ball is packed with material
or is not seating properly.
Engine speed is too low. Increase throttle setting. Manual 311018.
Suction tube air leak. Tighten suction tube.
Pressure setting is too low. Increase pressure. Manual 311018.
Fluid filter (11), tip filter or tip is clogged
or dirty.
Large pressure drop in hose with heavy
materials.
Intake valve is leaking. Clean intake valve. Be sure ball seat is not
Pump packings are worn Replace pump packings. Manual 309277
Paint is too thick Thin the paint according to the supplier’s
Engine speed is too high Decrease throttle setting before priming
Worn engine governor Replace or service engine governor
New pump or new packings Pump break-in period takes up to 100 gallons
Faulty transducer Replace transducer
Throat packing nut is loose Remove throat packing nut spacer. Tighten
Throat packings are worn or damaged Replace packings. Manual 309277
Displacement rod is worn or damaged Replace rod. Manual 309277
Tip is partially clogged Clear tip. Manual 311254
Fluid supply is low or empty Refill fluid supply. Prime pump. Manual
Piston rod seal worn or damaged Replace these parts
Clean intake valve. Manual 309277.
Clean filter. Manual 311018 or 311254.
Use larger diameter hose and/or reduce
overall length of hose. Use of more than 100
ft of 1/4 in. hose significantly reduces
performance of sprayer. Use 3/8 in. hose for
optimum performance (50 ft minimum).
Reduce engine speed and cycle pump as
slowly as possible during priming.
nicked or worn and that ball seats well.
Reassemble valve.
recommendations.
pump. Manual 311018
no load
of material
throat packing nut just enough to stop
leakage.
Reprime pump. Manual 311018
311018. Check fluid supply often to prevent
running pump dry.
311021U 9
Troubleshooting
Problem Cause Solution
Fluid delivery is low Pressure setting too low
Displacement pump outlet filter (if used)
is dirty or clogged
Intake line to pump inlet is not tight
Hydraulic motor is worn or damaged
Large pressure drop in fluid hose
The sprayer overheats Paint buildup on hydraulic components Clean
Oil level is low Fill with oil, page 7.
Excessive hydraulic pump noise Low hydraulic fluid level Shut off sprayer. Add fluid*, page 7.
Gallon counter not working Broken or disconnected wire Check wires and connections. Replace
Bad sensor Replace sensor
Missing or damaged magnet Replace magnet. Locate in correct spot.
Sprayer operates, but display does not Bad connection between control board
and display
Display damaged Replace display
Loose cables Connect cables to back of control board
Control board LED not flashing Replace control board
Distance counter not operating properly Trigger sensor not set correctly See “Spray icon does not show on display
Bad wiring connections Check connector, and reconnect
Distance sensor not spaced correctly
from gear
Distance and gear not aligned Remove tire, and press in or pull out gear to
Gear teeth missing or damaged Replace distance gear/wheel
Wire cracked or broken Replace sensor
Mils not calculating Distance sensor See “Distance counter not operating
Trigger sensor See “Spray icon does not show on display
Gallon counter See “Gallon counter not working”
Bad or damaged control board Replace control board
Fluid spray starts after spray icon is
shown on display
Fluid spray starts before spray icon is
shown on display
Interrupter (164) is improperly positioned Turn screw counterclockwise until spray icon
Interrupter (164) is properly positioned Turn screw clockwise until spray icon is
Increase pressure. See manual 311018
Clean filter
Tighten
Bring sprayer to Graco distributor for repair
Use larger diameter for shorter hose
broken wires.
Remove display and reconnect
when fluid is sprayed”
Adjust space between sensor and gear to
0.50 -/+ .020 in. (page 15).
align sensor and gear.
properly”
when fluid is sprayed”
synchronizes with fluid spray.
synchronized with fluid spray
10 311021U
Problem Cause Solution
Troubleshooting
Spray icon does not show on display
when fluid is sprayed
Spray icon is always shown on display Interrupter (164) is improperly positioned Turn screw clockwise until spray icon is
Pressure control knob does not rotate Knob is jammed Pull back cover where remote cable connects
Pressure control knob rotates freely with
no pressure change
Engine bounces when striping Spring is broken, loose or missing Replace or reconnect spring
Loose connector Check that 5-pin connector and reed switch
are properly connected.
Interrupter (164) is improperly positioned Turn screw counterclockwise until spray icon
synchronizes with fluid spray
Reed switch assembly (18) is damaged Replace reed switch assembly (18)
Magnet on assembly (18) is missing Replace reed switch assembly (18)
A connector on wiring harness or on
reed switch (18) is damaged
Cut or sliced wire Replace wiring harness.
Control board is damaged Replace control board
Display is damaged Replace display
Reed switch assembly (18) is damaged Replace reed switch assembly (18)
Remote cable broken or disconnected Replace or reconnect cable
Disconnect reed switch and 5-pin connector
from back of control board. Check continuity
between pin 1 on 2-pin connector and pin 1
and 5-pin connector. Check continuity
between 2 on 2-pin connector and pin 4 on
5-pin connector. If there is no continuity in
either case, replace wiring harness. If there is
continuity in both cases, replace reed switch
assembly (18).
synchronized with fluid spray
to hydraulic pump and turn counterclockwise
until free
311021U 11
Digital Tracking System
Digital Tracking System
ON/OFF Switch
Removal
1 Relieve pressure, page 7.
2 Fig. 2. Remove screws (103) and front cover (31).
3 Pull display connector wings (A) open on PC board
and pull display connector out.
4 Disconnect ON/OFF switch connector (B) from PC
board.
5 Press in on two retaining tabs on each side of
ON/OFF switch (15g) and remove switch.
Installation
1 Fig. 2. Install new ON/OFF switch (15g) so tabs of
switch snap into place on inside of pressure control
housing.
2 Connect ON/OFF switch connector (B) to PC board.
3 Push display connector into PC board and close
display connector wings (A) on PC board.
4 Install cover (31) with two screws (103).
Installation
1 Fig. 2. Install control board (15d) and four screws
(15k). Torque to 105-115 in-lb.
2 Connect leads to control board. (Refer to note on
lead connections.)
3 Push display connector into PC board close display
connector wings (A) on PC board.
4 Install cover (31) with two screws (103).
Pressure Control Transducer
Removal
1 Relieve pressure, page 7.
2 Fig. 2. Remove two screws (103) and cover (31).
3 Disconnect transducer lead (C) from control board
(15d).
4 Remove pressure control transducer (259) and
o-ring (124) from filter housing.
Installation
PC Board
Removal
1 Relieve pressure, page 7.
2 Fig. 2. Remove two screws (103) and cover (31).
3 Pull display connector wings (A) open on PC board
and pull display connector out.
4 Note on paper, lead connections to the control
board. Disconnect leads from control board (15d).
5 Remove four screws (15k) from control board.
12 311021U
1 Fig. 2. Install o-ring (124) and pressure control
transducer (259) in filter housing. Torque to 35-45
ft-lb.
2 Connect transducer lead (C) to motor control board
(15d).
3 Install cover (31) with two screws (103).
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