8
Safety Features
Servicing of Sure Flame Construction Heaters normally involves one of several built-in safety fea-
tures. The Model S1505 incorporates devises to detect the following:
1. LOSS OF FLAME
Gas supply is shut off if flame is lost to prevent raw gas from
leaving the heater.
2. OVERHEATING
a) Thermal overload protection in the motor
b) High temperature limit switch in the combustion chamber
3. LOSS OF POWER
Total shutdown with manual reset required. Any one of the safety
devises will create a loss of power situation.
4. BLOCKED AIR SUPPLY A switch detects the differential pressure in the combustion
chamber and shuts down when insufficient
Preventative Maintenance
Sure Flame construction heaters are built to withstand the rigors of operating on construction sites,
for mining application, and multitude of other locations where heaters are used. To maintain reli-
able performance required it is necessary to do a certain amount of regular maintenance.
A.
Visual Checks
The following items should be checked for excessive wear or damage:
1) Wheels
2) Cords and Connectors
3) Wiring and Conduit
4) Heater shell (including heat shield) and Control Box.
B.
Burner
Flame rod and insulator -
Clean with soap and water or solvent on a routine basis. Any
build up on burner should also be removed at this time.
Spark Plug-
Clean with solvent and check spark gap, approx. .070 to .085.
C.
Control Box
The inside of the control box should be cleaned using a dry cloth or by blowing compressed air.
Do not
use any liquid or aerosol spray cleaners. Also check that all electrical connections are
snug and tight.
D.
Motor
The electric motor on the S1505 Heater is fitted with sealed bearings and no oiling is required.
Keep the motor clean by blowing or wiping off dust or dirt in order to prevent it from
overheating.
E.
Fan
Check for build up on fan blades. Check the tightness of the set screw and run heater to check
for fan vibration.
