Proheat M80 Manuel de service télécharger pdf (Page 58)

4-21

PROHEAT M-SERIES G-II PCM SERVICE MANUAL

f) Switch the PROHEAT on and observe for a spark. Spark will continue for

five seconds.

If the spark is OK, reinstall the burner head and review Fuel System

troubleshooting, page 4-5.

WARNING

Keep blower housing on to avoid

injury when Motor starts up.

NOTICE

All plugs/harnesses must be rein-

stalled into the G-II Proheat Control

Module (G-II PCM) before heater

goes back into service.

NOTICE

Leaving the Dual Mode Temperature

Sensor disconnected ensures that the

burner head will enter Cool Down

(Purge) mode and run for a maximum

of three minutes.

d) Disconnect the Ignition Module connector at the G-II PCM.

e) Check for contamination on the Flame Sensor. Clean if necessary using

electrical contact cleaner and a soft cloth.

f) Reconnect the power harness.

WARNING

To avoid the risk of shock and to

ensure that the PROHEAT does not

fire, disconnect the Ignition Module

connector at the G-II PCM.

Flame Sensor – Check:

a) Flame Sensor operation.

b) Combustion tube orientation.

Test Procedure – Flame Sensor circuit:

a) Disconnect all harnesses at the G-II PCM.

b) Disconnect the fuel supply line.

c) Loosen and back off the burner head mounting (2) bolts five to six turns

allowing enough room to rotate the burner head 15° counter-clockwise

and remove.

START: G-II PCM Flame

Sensor Circuit

(1 Flash)

Figure 4-23: Burner Head Removal and Flame Sensor Location.

FLAME SENSOR PORT

MOUNTING EARS (2)

MOUNTING BOLTS (2)

TORQUE = SEE SECTION 1.3

COOLANT PUMP

SWITCH INPUT

DUAL MODE TEMP

SENSOR

POWER

FUEL INLET

1 2 ... 53 54 55 56 57 58 59 60 61 62 63 ... 89 90

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Proheat M80 Manuel de service Page 58

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