Graco field lazer s100 Operating instructions

3A5053B
EN
Repair
Field Lazer™S100
Displacement Pump
For use with water-based materials
3300 psi (22.7 MPa, 227 bar) Maximum Working Pressure
Model 246426
Series A
Model 17M873
Series B
Important Safety Instructions
Read all warnings and instructions in this manual, related
striping manuals and on the equipment. Be familiar with the
controls and the proper usage of the equipment.
Save these instructions.
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Table of Contents
Warnings . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3
Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Pressure Relief Procedure . . . . . . . . . . . . . . . . . 4
Pump Repair Kits . . . . . . . . . . . . . . . . . . . . . . . . 4
Tools & Materials Needed . . . . . . . . . . . . . . . . . . 4
Cleaning and Inspecting Parts . . . . . . . . . . . . . . 4
Disassemble . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Assemble . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Cross-Section Reference . . . . . . . . . . . . . . . . . . 9
Parts - Pump 246426, 17M873 . . . . . . . . . . . . . . . . 10
Technical Data . . . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Graco Standard Warranty . . . . . . . . . . . . . . . . . . . 12

Warnings
3A5053B 3
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.
WARNING
EQUIPMENT MISUSE HAZARD
Misuse can cause death or serious injury.
• 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.
• 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 manufac-
turer’s replacement parts only.
• Do not alter or modify equipment. Alterations or modifications may void agency approvals and create
safety hazards.
• Use equipment only for its intended purpose. Call your distributor for information.
• Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or flu-
ids containing such solvents.
• Comply with all applicable safety regulations.
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.
SKIN INJECTION HAZARD
High-pressure spray is able to inject toxins into the body and cause serious bodily injury. In the event that
injection occurs, get immediate surgical treatment.
• Do not aim the gun at, or spray any person or animal.
• Keep hands and other body parts away from the discharge. For example, do not try to stop leaks with
any part of the body.
• Always use the nozzle tip guard. Do not spray without nozzle tip guard in place.
• Do not leave the unit energized or under pressure while unattended. When the unit is not in use, turn
off the unit and follow the Pressure Relief Procedure for turning off the unit.
• Always engage the trigger lock when not spraying. Verify the trigger lock is functioning properly.

Service
43A5053B
Service
Pressure Relief Procedure
Follow the Pressure Relief Procedure whenever
you see this symbol.
1. Engage trigger lock.
2. Turn ON/OFF switch to OFF.
3. Disengage trigger lock. Hold metal part of gun
against grounded metal pail and trigger gun into pail
to relieve pressure.
4. Engage the trigger lock.
5. 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.
6. If you suspect the spray tip or hose is clogged or
that pressure has not been fully relieved after follow-
ing the steps above, VERY SLOWLY loosen tip
guard retaining nut or hose end coupling to relieve
pressure gradually, then loosen completely. Clear
hose or tip obstruction.
Pump Repair Kits
Tools & Materials Needed
•Vise
• 12 in. adjustable, open-end wrench (2)
• Hammer (20 oz maximum)
• Small screwdriver
• Pick or long small screwdriver
• Throat Seal Liquid
• Medium strength threadlocker
•Grease
• SAE 30W oil
Cleaning and Inspecting Parts
Clean and inspect parts. Pay particular attention to the
ball seats in the intake valve and piston, which must
have no nicks or wear, and to the inside of the cylinder
and the outside of the piston rod, which must not be
worn or scratched. Replace worn or damaged parts.
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 Pro-
cedure when you stop spraying and before cleaning,
checking, or servicing the equipment.
Pump Repair Kit
17M779 17M873
287064 246426

Service
3A5053B 5
Disassemble
1. Remove seal (201), packing nut (202) and o-ring
(228).
2. Unscrew intake valve from cylinder.
3. Disassemble intake valve. Clean and inspect o-ring
(227). NOTE: A pick may be required to remove
o-ring.
4. Tap piston rod out of cylinder with a hammer or flip
over and tap piston rod out against a bench.
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201
202
228
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215
214
212
213
227
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63A5053B
5. Unscrew piston valve from piston rod. Clean and
inspect parts. The piston has a special thread lock-
ing/sealing patch. Do not remove the patch. The
patch allows four disassembly/assembly procedures
before it is necessary to apply medium strength
threadlocker to the threads.
6. Remove packings and glands from piston rod.
7. Remove throat packings and glands from cylinder.
Discard throat packings and glands.
Assemble
1. Soak all leather packings in SAE 30W oil for 1 hour
minimum prior to assembly. Stack male gland (219)
on piston rod. Alternately stack UHMWPE (208) and
leather (218) packings (note orientation) on piston
rod. Install female gland (209). Install piston wiper
(217) (note orientation) on piston valve, threads are
good for four repackings. Use medium strength
threadlocker on piston valve threads after four
repackings.
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210
217
209
208
218
219
206
222
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3A5053B 7
2. Install ball (206) in piston rod. If threadlocker is
applied to piston valve threads, make sure that none
gets on ball.
3. Tighten piston valve to piston rod. torque piston
valve to 27 ± 3 ft-lb. (37 ± 4.1 N•m).
4. Soak all leather packings in SAE 30W oil for one
hour minimum prior to assembly. Place male gland
(204) in cylinder. Alternately stack UHMWPE (203)
and leather packings (223) (note orientation). Place
female gland (224) on top of cylinder seat packings.
5. O-ring replaces clip ring on older models. Install
o-ring (228) onto packing nut. Loosely install pack-
ing nut into cylinder.
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224
223
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223
203
204
201
202
228
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6. Grease piston packings.
7. Grease top inch or two of piston rod that will go
through the cylinder throat packings.
8. Slide piston rod assembly into bottom of cylinder.
Replace o-ring (207) if desired.
9. Reassemble intake valve with new o-ring (227),
seat (212) and ball (214). Seat may be flipped over
and used on other side. Clean seat thoroughly.
10. Install intake valve on cylinder. If a wrench is used
torque to 60 ± 5 ft-lb (81 ± 7 N•m).
NOTICE
Do not slide piston assembly into top of cylinder as this
may damage piston packing.
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215
214
212
213
227
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3A5053B 9
11. Torque packing nut (202) to 75 ± 5 in.-lb (8.5 ± .5
N•m).
12. Remove throat seal (201) when pump packings
begin to leak after extended use. Then tighten pack-
ing nut down until leakage stops or lessens. This
allows approximately 100 gallons of additional oper-
ation before a repacking is required.
Cross-Section Reference
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201
202
228
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222
201
202
228
205
203
204
206
219
208
209
214
213
207
215
214
212
227
218
217
228
223

Parts - Pump 246426, 17M873
10 3A5053B
Parts - Pump 246426, 17M873
Ref. Part Description Qty.
201* 180656 SEAL, throat 1
202 193047 NUT, packing 1
203* 192710 V-PACKING, throat, V-Max,
UHMWPE, blue
3
204* 176754 GLAND, male, throat 1
205 24X749 CYLINDER, pump 1
206* 105444 BALL, set,0.3125 in. 1
207* 17V093 PACKING, o-ring 1
208* 192712 V-PACKING, piston, V-Max,
UHMWPE, blue
3
209* 180073 GLAND, female, piston 1
210 243181 VALVE, piston 1
212† 15A968 SEAT, footvalve, carbide 1
213 VALVE, intake (foot)
213a 15B874 Series A 1
213b 15B611 Series B 1
214*† 105445 BALL, set, 0.5000 in. 1
215† 15C011 GUIDE, ball 1
217* 15G234 WIPER, piston 1
218* 176749 V-PACKING, leather, throat 2
219* 195129 GLAND, male, piston 1
222 243174 ROD, piston 1
223* 176755 V-PACKING, leather, throat 2
224* 176757 GLAND, female, throat 1
225 162453 NIPPLE, 1/4 npsm x 1/4 npt 1
227*† 15B112 PACKING, o-ring (0.941 in. OD) 1
228 160516 PACKING, o-ring 1
* – These parts included in pump repair Kit 244194
†– These parts included in inlet valve seat Kit 246429
201
202
228
224
203
223
204
222
213a 213b
227
225
212
214
215
207
205
210
206
217
209
218
208
219
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