Lincoln Impringer Conveyor Oven 1200 Manuel d'utilisateur télécharger pdf (Page 31)

Impinger I -–1000 Series Service Manual - International

Model 1030 - 1031

SYMPTION POSSIBLE CAUSE EVUALATION

Gas Supply Manual Gas

Shut-Off Valve

Check for adequate gas supply to oven. Check to

see that manual shut-off valve is open.

Fan Switch Check to see that the fan switch is on

Main Oven Fan Check if main oven fan is operating. If not, refer to

"Oven fan will not run."

Burner Switch Check for 220 VAC to neutral on both sides of

switch. If switch is closed, and 220 VAC is present

on one side only, replace switch .

Gas Pressure Switch (internal

to gas valve)

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 Nat., 23 L.P.

2.0 Town Gas. 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.

Air Pressure Switch Check for 220 VAC on both side of switch. If

voltage present on one side only, check for air tube

blockage or misalignment adjust air switch. If above

fails, replace air pressure switch.

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

relay). If voltage present, proceed. If no voltage is

present, wait 30 seconds and check reset button. If

above fails, replace ignition control.

Burner Motor Relay Check for continuity to 220 VAC coil. Check for

power to relay coil (220 VAC). Check for 120 VAC

to relay contact terminals. Visually check for

contact pull-in.

Burner Blower Motor Check for 120 VAC supply to burner blower motor.

WITH POWER OFF: turn blower wheel to check for

locked rotor. If 120 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. Connect a temporary

jumper wire (for testing purposes only) from pin "C"

to pin "N.O." on ignition control (to bypass air

switch). NOTE: For Honeywell control only. Check

for air tube blockage or misalignment, adjust air

pressure switch. If the above fails, replace air

pressure switch.

Oven will not heat

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 still not

present, replace ignition control. f voltage is

present, visually check for spark at ignitor head.

1 2 ... 26 27 28 29 30 31 32 33 34 35 36 ... 111 112

Commentaires sur ces manuels

Pas de commentaire

Lincoln Impringer Conveyor Oven 1200 Manuel d'utilisateur Page 31

Commentaires sur ces manuels

Produits connexes et manuels pour Fours à convection Lincoln Impringer Conveyor Oven 1200