Lincoln Series 1200 Manuel D’Utilisation

Impinger I -–1000 Series Service Manual - International

Incoming Power Supply

Check circuit breakers, reset if required. Call the

Power Co. if needed.

Fuse Transformer

Check, replace if necessary.

Fuseholder

Check, replace if necessary.

Cooling Fan Thermostat

Check the cooling fan thermostat (Thermostat

closes at 120°F and opens at 100°F). With the

cooling fan thermostat pre-heated, check for

continuity. If switch is open, replace.

No automatic control

box cooling

Cooling Fan

120 VAC should now be at this motor. If voltage is

present, check motor for shorts, opens, or grounds.

WITH POWER OFF: check for locked rotor.

Cooling fan continues

to run after 20 minute

cool down

Cooling Fan Thermostat

Thermostat is normally open and may have closed

if control box temperature is 120°F or above.

Gas Supply

Check for adequate gas supply to oven.

Manual Gas Shut-off Valve

Check to see that manual shut-off valve is open.

Fan Switch Main Oven Fan

Check to see that the fan switch is on. Check if

main oven fan is operating. If not, refer to "Oven

fan will not run."

Oven Start Relay

Check for contacts to close.

Burner Switch

Check for 220 VAC to neutral on both sides of

switch.

Air Pressure Switch

Check for 220 VAC on both sides of switch. If

voltage present on one side only, check for air tube

blockage. Adjust air switch. If above fails, replace

air pressure switch.

Gas Pressure Switch

Check for 220 VAC to neutral on both sides of

switch. If voltage is present on one side of switch

only, check the following. Check for proper gas

pressure supply to gas valve.(Marked on oven spec

plate). Check for proper adjustment of gas pressure

switch. Should be set at 8.8 for Nat., 23 for L.P.

Check gas filter in gas valve for blockage or

damage. (See Adjustment Section for location). If

the above checks okay, but switch still not closed,

replace gas valve.

Hi-Limit Thermostat

Terminals are normally closed. If open, reset and

test oven for proper operation. If thermostat will not

hold for maximum oven temperature, and oven is

not exceeding temperature dial setting, check for

proper location of capillary bulb in its spring holder.

If above checks okay, replace hi-limit thermostat.

Ignition Control

Check for 220 VAC supply to ignition control at pin

#1 and neutral. If voltage is not present, retrace

wiring back to hi-limit thermostat. Check for 220

VAC at pin #6 to neutral.(Power to burner motor). If

voltage is present, proceed. If no voltage is

present, wait 30 seconds and check reset button. If

above fails, replace ignition control.

Oven will not heat

Burner Blower Motor

Check for 220 VAC supply to burner blower motor.

WITH POWER OFF: turn blower wheel to check for

locked rotor. If 220 VAC is present and motor does

not run, replace motor.

Burner Blower Motor Air

Pressure Switch

Check for 220 VAC switching to pin "N.O." as the

air pressure switch closes. For Honeywell ignition

control only, connect a temporary jumper wire (for

testing purposes only) from pin "C" to pin "N.O." on

ignition control (to bypass air switch). Check for air

tube blockage or misalignment, adjust air pressure

switch. If the above fails, replace air pressure

switch.