18
MAINTENANCE
KEEP ALL GUARDS AND SCREENS IN PLACE
DISCONNECT ALL POWER SOURCES
BEFORE DOING ANY REPAIR, MAINTENANCE OR INSPECTIONS!
BEGINNING OF EACH DRYING SEASON:
1.
Remove inlet screen. With power off, check for foreign material on fan blade. Turn fan by hand to be sure it
rotates freely.
2.
Check wiring of fan and heater. Look for loose connections, bare wires, or rodent damage. Be sure to check
ignition wire and flame sensor wires for any damage.
3.
Examine the flame rod for cracked insulation.
4.
Examine spark plug for proper gap. The gap should be approximately 1/8”. Spark plug and flame rod should be
examined periodically throughout drying season.
5.
All plenum controls should be checked.
6.
Check all plumbing connections for leaks, using soap solution.
7.
Check vaporizer adjustment daily. Weather condition changes can demand new adjustment.
AFTER DRYING SEASON:
The balance of a vane axial blade is very critical. Vibration can cause the fan housing to crack. To prevent this,
check behind the blade for dirt, dust, or foreign material.
Burn fuel out of lines and turn off at source.
Cover fan inlet to keep out weather, pests, and to prevent “wind milling” which can cause wear on the start switch in
single phase motors.
DURING OFF SEASON:
Every six weeks, remove inlet cover and operate fan to redistribute grease in bearings. Let motor warm up enough to
force out any accumulated moisture.
Make sure control box cover is in place and secured. Turn off power and fuel at source.
NOTE: One drop of liquid LP will expand 270 times as it converts to vapor. It would be very dangerous to have a
vaporizer coil develop a leak during heater operation. Be sure to check vaporizer coil yearly. Vaporizer should be
replaced every 5 years.
