Lincoln Series 1200 사용자 설명서

Impinger I -–1000 Series Service Manual - International

Spark Generator

After a pre-purge time of 30 to 60 seconds after

blower motor starts, check for 220 VAC to spark

generator. If voltage is not present, check reset

button on ignition control. If voltage is present,

visually check for spark at ignitor head.

Ignitor/Sensor Assembly

Check for visible damage to ignitor/sensor

assembly. If there is no visible damage to the

components, and no spark, replace the spark

generator. If there is visible damage to the ignitor

sensor assembly, replace. Also check for frayed or

damaged wire in burner tube.

Gas Valve

Check for 220 VAC supply to gas valve. If no

voltage present, check reset button on ignition

control, check all connections for tightness. If there

is no voltage at gas valve, replace ignition control.

If there is voltage present, check for gas pressure

at gas pressure tap located in gas piping. If there is

no gas pressure, replace gas valve.

If the ignition control is energized, and the gas

valve and ignitor circuits are energized, visually

check for pilot flame. This may be done by opening

the small inspection door on the end of the burner,

or by opening the main oven door and looking

under the lower finger housings on the right side of

the oven. If no pilot flame is visible, check the

following.

Pilot Tube

Check for gas pressure at pilot tube. Disconnect

pilot tube at burner and connect manometer to pilot

tube. If no gas pressure is present, check for

blockage in pilot tube. If these are clear, and there

is gas supplied to the oven, replace the gas valve.

Pilot Orifice

If there is gas pressure at the pilot tube, check the

pilot orifice for obstructions. Replace as needed.

No Pilot

Burner Ignitor

Check the burner ignitor head for any obstructions,

also check for frayed or broken wire, any type of

damage to spark gap (.100 in 2.5 mm).If there is

visible damage, replace ignitor assembly.

Pilot flame, but burner

will not stay ignited

Flame Sensor

(There should be a visible pilot flame at this time).

To check for flame sensor operation, connect a

digital multimeter. (Capable of measuring D.C.

microamperes) between the flame sensor wire and

the ignition control. NOTE: This is current

measurement and the meter must be connected in

series. Proper current readings should be

Honeywell 2-4 micro amp D.C., Landis & Gyr. 3

micro amp D.C. If these readings are not achieved,

replace ignitor/sensor assembly. Also check for any

type of damage to flame sensor wire and

connections.

Ignition Control

If there is sufficient flame sensor current, but the

burner will not remain ignited, check reset button on

ignition control.

Indicator light is on but

no main flame, (Model

1046-1047)

Gas Control Relay

Check for 220 VAC to relay coil. If no voltage is

present, trace wiring back to ignition control. If

voltage is present, check to insure contacts are

closing.