Installation Instruction for Koker with thermostat
13
Koker TROUBLE SHOOTING GUIDE
FIRE GOES OUT
See page 8 and 9 (Timer) and Page 6 Diagram (2)
COAL KLINKERING OR FUSING TOGETHER
See page 6 Diagram (1) & (2)
SULFUR SMELL
See page 2 Cleaning & Lubrication and check draft section
STOKER UNIT DOESN’T FEED COAL
See page 7 (Pusher Bar)
PUSHER BAR IS NOT MOVING STRAIGHT
See page 7 (Pusher Bar)
CONVECTION BLOWER RUNS TOO OFTEN
See Page 11
CONVECTION BLOWER RUNS CONSTANTLY
Pull white button on Fan Limit
Switch out for automatic operation. Clean screen and fan blades on blower. See page 14
THERMOSTAT CALLS FOR HEAT, but CONVECTION BLOWER OFF TOO
LONG
See Page 6 Diagram (1)
FIRE IS LIT, BUT NOT ENOUGH HEAT
If gear motor only runs short cycles, timer is working. When thermostat calls for
heat, gear motor should run steady. If gear motor is running steady, but fire is small,
increase coal feed. (See pages 6).
If gear motor is not running steady, check for loose wire in Thermostat or in
Relay. Check for broken thermostat wire between thermostat and Relay.
GEAR MOTOR RUNS CONSTANTLY MAKING TOO MUCH HEAT
Gear motor can only be activated by thermostat or timer. Remove thermostat
wires from T.T. terminals in Relay, if gear motor shuts off, replace thermostat wire or
Thermostat. Check timer to see if yellow wheel is turning, if not replace timer motor.
Check timer switch. (See page 9 Timer)
CONVECTION BLOWER NOT BLOWING MUCH AIR
Clean screen and fan
blades on blower.
GEAR MOTOR SHUTS OFF ON HI-LIMIT
High Limit pointer in Fan Limit Switch is designated to shut gear motor off when
internal air temperature reaches 200 degrees. If internal air temperature stays on 200
degrees, Convection Blower is not cooling stove off quickly enough. Clean screen and
fan blades on blower or replace convection blower (or See Page 11 Fan Limit Control).
