Maintenance
I A
W' ARN ING
I N
ever ser_vice he�ter while it is
a
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. plugged m or while hot!
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NOTE:
USE ORIGINAL EQUIPMENT REPLACEMENT PARTS.
Use of third-party or other alternate components will void warranty
and may cause unsafe operating conditions.
FUEL TANK
- Flush every 200 hours of operation or as needed (See page 8).
AIR FILTERS:
The
Air Intake Filter
should be replaced or washed with soap and
water and dried thoroughly every 500 hours of operation, or less,
depending on conditions.
The
Output
and
Lint Filters
should be replaced every 500 hours of
operation or less, depending on conditions.
NOTE:
Use of diesel may require additional maintenance.
FAN BLADES
CLEAN EVERY SEASON OR AS NEEDED.
1. Remove upper shell.
2. Use Allen wrench to loosen set screw which holds fan blade to
motor shaft.
3. Slip fan blade off motor shaft.
4. Clean fan blade using soft cloth moistened with kerosene or
solvent.
5. Dry fan blade thoroughly.
6. Reinstall fan blade to motor shaft.
7. Place fan hub flush with end of motor shaft.
8. Place set screw on flat end of shaft.
9. Tighten screw firmly (40-50 inch pounds/ 4.5-5.6 N-m). Rein-
stall upper shell
NOZ ZLE
Remove dirt in nozzle as needed.
1. Remove upper shell.
2. Remove fuel line B from burner assembly by using wrench.
3. Remove burner head from burner assembly.
4. Remove lead wire from spark plug.
5. Remove spark plug from burner head.
6. Carefully remove nozzle from burner head using socket
wrench.
7. Blow compressed air through face of nozzle (this will remove
any dirt).
8. Inspect nozzle for damage. If damaged or clogged, replace
nozzle.
9. Make sure plug is in place on burner head.
10. Reinstall nozzle into burner head and tighten firmly (175-200
inch-pounds).
11. Reinstall spark plug in burner head.
12. Attach burner head to combustion chamber.
fl
Photocell
Figure 7.
Nozzle Replacement
13. Attach spark plug wire to spark plug
14. Attach fuel line to burner head and tighten firmly.
15. Replace upper shell.
16. Attach ignitor wire to spark plug.
17. Attach fuel and air line hoses to burner head.
18. Reinstall fan blade and upper shell.
Spark Plug
Nozzle
Figure 8.
Spark Plug Replacement
SPARK PLUG
CLEAN AND REGAP EVERY 600 HOURS OF OPERATION OR
REPLACE AS NEEDED.
1. Remove upper shell.
2. Remove spark plug wire from spark plug (See Figure 8).
3. Remove spark plug from burner head using medium Phillips
screwdriver.
4. Clean and regap spark plug electrodes to 2.5 mm gap (0.1").
5. Reinstall spark plug into burner head.
6. Attach spark plug wire to spark plug.
7. Reinstall upper shell.
GAU-KFA-PH-600K-TST
Larson Electronics, LLC
Phone: (800) 369-6671
Fax: (903) 498-3364
www.larsonelectronics.com
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