Graco 24L884 Manuel

Kit Instructions

Burner Plate Assembly

Kit Number 24L884

For replacement of complete burner plate assembly on the ThermoLazer ProMelt™

Pavement Marking System (Model 24H624)

Related Manuals:

Important Safety Instructions

Read all warnings and instructions in ThermoLazer Operation manual. Be familiar

with the controls and the proper usage of the equipment. Save these instructions.

Operation 3A1319

Parts 3A1321

Repair 3A1320

Repair Kit 332742

334566C

ti24785a

Warnings

2334566C

Warnings

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-

tion 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

WARNINGWARNING

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 all equipment in the work area. See Grounding instructions.

• 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.

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.

CARBON MONOXIDE HAZRD

Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon mon-

oxide can cause death.

• Do not operate in an enclosed area.

Removal

334566C 3

Removal

Note: Engage rear wheel brake. Safely elevate front

wheel and support frame to aid in accessing

components on underside of unit.

1. Close manual gas shut off valve on LP-tank, discon-

nect gas supply hose and remove LP-tank.

2. Disconnect gas line (76) from tee fitting (165).

3. Disconnect gas pilot line (71) from flared adapter

(421). Only rotate the nut on gas pilot line (71), while

keeping flared adapter (421) stationary.

4. Disconnect gas line (186) from elbow fitting (161).

Disconnect gas line (48) from elbow fitting (161).

5. To uninstall gas line (48), disconnect other end of

gas line (48) from elbow fitting (32).

ti24786a

ti24787a

76 165

ti25692b

421

161

186

ti25693a

ti25155a

Removal

4334566C

6. Unplug electrode wire (217) from pulse fire igniter

(126).

7. Remove gas valve enclosure door (320) from gas

valve enclosure (28).

8. Loosen two screws on gas valve (13) to disconnect

red (top) and white (bottom) thermopile wires (7).

9. Remove screw (148) to disconnect grounding wire

(244).

10. Remove plastic bushings (357and 156) from gas

valve enclosure (28) and from wiring.

ti24790a

126

217

ti24791a

320

ti24792a

148 244

ti24793a

ti24794a

156

357

Removal

334566C 5

11. Pull wires (7 and 244) out of gas valve enclosure

(28).

12. Pull all wires (7, 217 and 244) through hole in arm

(23).

13. Unscrew nuts (97), remove bolts (140) and washers

(123 and 119), then lower arm (23).

14. Remove four burner plate screws (105) to

disconnect burner plate (18) from frame (55).

15. Lower burner plate (18), slide forward on top of arm

(23), and lower back end of burner plate (18) to slide

assembly out.

NOTICE

To prevent damage to wiring, ensure wires are moved

away from burner plate.

244

ti24795a

ti25156a

217

244

ti24968a

140

119

123

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105

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Installation

6334566C

Installation

1. Angle front end of new burner plate assembly (18)

over arm (23) and raise assembly up to frame (55).

2. Mount burner plate assembly (18) with four screws

(105) to frame (55).

3. Mount arm (23) with 2 bolts (140), washers (123

and 119) and nuts (97).

4. Connect gas line (76) to tee fitting (165)

ti24972a

ti24973a

105

ti24976a

140

ti24974a

165

Installation

334566C 7

5. Connect gas pilot line (71) to flared adapter (421).

Only rotate the nut on gas pilot line (71), while keep-

ing flared adapter (421) stationary.

6. Connect gas line (186) to elbow fitting (161).

Connect gas line (48) to elbow fitting (161).

7. To install gas line (48), connect gas line (48) to

elbow fitting (32).

8. Pull wires (7, 217 and 244) through hole in arm (23).

9. Draw green grounding wire (244) through gas valve

enclosure (28) and reconnect ground wire with

screw (148).

ti25690b

421

161

186

ti25691a

ti25157a

ti24978a

217

244

148

244

ti24979a

Installation

8334566C

10. Reconnect igniter electrode wire (217) to pulse fire

igniter (126).

11. Draw red and white thermopile wires (7) into gas

valve enclosure (28).

12. Install bushings (357 and 156) onto wires and press

into gas valve enclosure (28).

13. Reconnect red (top) and white (bottom) thermopile

wires (7) to gas valve (13).

14. Screw gas valve enclosure door (320) onto the gas

valve enclosure (28)

ti25017a

126

217

244

ti24980a

ti25014a

156

357

ti24792a

ti24791a

320

Installation

334566C 9

15. Safely lower unit while keeping wheel brake

engage.

16. Replace LP-tank, reconnect hose and turn LP-gas

tank valve ON

17. Check for gas leaks at final assembly (see

Operation manual).

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Parts Drawing

10 334566C

Parts Drawing

ti25018b

105

120

121

130

417

418

421

420

419

208

217

225

230

231

319

405

230

225

231

117

165

166

117

166

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