Graco 24L884 Manual

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
EN
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
71
ti25692b
421
161
48
186
ti25693a
ti25155a
48
32

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
28
ti24792a
13
7
28
148 244
ti24793a
ti24794a
28
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.
28
7
244
ti24795a
ti25156a
7
23
217
244
ti24968a
140
97
23
119
123
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18
105
55
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23
18
55
23
18

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
23
18
55
ti24973a
18
105
55
ti24976a
140
97
23
ti24974a
76
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).
71
ti25690b
421
161
48
186
ti25691a
ti25157a
48
32
ti24978a
7
23
217
244
148
28
244
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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
28
7
244
ti24980a
ti25014a
28
156
357
ti24792a
13
7
28
ti24791a
320
28

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
1
7
18
105
120
121
130
417
418
421
420
419
208
217
225
230
231
319
405
230
225
231
11
117
165
166
117
166

Part List
334566C 11
Part List
Ref. Part Description Qty
1 16Y284 RING, burner 2
7 122944 FITTING, thermopile 1
18 16J484 PLATE, mount, burner 1
49 17D596 HOSE, propane, braided sst 1
105 112798 SCREW, thread forming, hex, HD 4
117 16A061 TUBE, formed, gas 2
120 100016 WASHER, lock 2
121 100015 NUT, hex mscr 2
130 125324 FITTING, inlet, pilot 1
165 123158 FITTING, flared, 3/8 tube, tee 1
166 125158 FITTING, flared, 1/8 npt x 90 elbow 2
208 110755 WASHER, plain 2
217 127255 ELECTRODE 1
225 100020 WASHER, lock 1
230 100179 NUT, hex mscr 3
231 110637 SCREW, mach, panhead 5
244 16A272 HARNESS, wire
319 16W410 BRACKET 1
405 114984 SCREW, tapping, phillips, pan hd 2
417 555455 ADAPTER, 1/8 x 1/8 npt 1
418 103656 NIPPLE, 1/8 x 1/8 npt, male 1
419 123725 ELBOW, 1/8 x 1/8 npt, female 1
420 128444 NIPPLE, 2.5 in, 1/8 x 1/8 npt 1
421 16Y514 ADAPTER, flared, 1/8 npt 1

All written and visual data contained in this document reflects the latest product information available at the time of publication.
Graco reserves the right to make changes at any time without notice.
Original instructions. This manual contains English. MM 334566
Graco Headquarters: Minneapolis
International Offices: Belgium, China, Japan, Korea
GRACO INC. AND SUBSIDIARIES • P.O. BOX 1441 • MINNEAPOLIS MN 55440-1441 • USA
Copyright 2014, Graco Inc. All Graco manufacturing locations are registered to ISO 9001.
www.graco.com
Revision C, May 2015
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