Proheat M80 Manuale di Servizio Scaricare il pdf (Pagina 37)

PROHEAT G-I PCM SERVICE MANUAL

4-6

Fuel Nozzle and Fuel Nozzle cavity – Check:

a) For Fuel Nozzle and O-ring damage and/or contamination.

b) For correct Fuel Nozzle for the PROHEAT BTU rating.

Test Procedure – Fuel Nozzle removal, inspection and cleaning or replacement:

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

b) Disconnect the fuel supply line.

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

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

and remove.

d) Remove Fuel Nozzle. Verify the Fuel Nozzle number ensuring it is the

correct Fuel Nozzle for your PROHEAT model. See table below.

e) Disassemble, inspect, clean, and reassemble Fuel Nozzle.

Fuel Nozzle disassembly, inspection, cleaning and reassembly:

• Hold the Fuel Nozzle stem lightly but firmly in a vise using soft jaws,

take care not to cause damage. Disassembles in three pieces.

• Inspect Fuel Nozzle stem and O-ring for contamination and/or damage.

Inspect and clean distributor fuel orifice (a soft bristled brush may be

used) , air passages, head and stem with electrical contact cleaner or

warm soapy water.

START: Fuel System Step 3

(1 Flash)

Figure 4-5: Burner Head Removal and Fuel Nozzle Removal

Figure 4-4: Nozzle Number Location.

M80 nozzle shown.

FUEL NOZZLE CAVITY

FUEL NOZZLE

TORQUE = SEE

SECTION 1.3

NOTICE

Fuel Nozzle parts are a matched set

and not interchangeable.

MODEL NUMBER

M50 30609-50

M80 30609-9

MOUNTING BOLTS (2)

TORQUE = SEE SECTION 1.3

COOLANT PUMP

SWITCH INPUT

TEMP SENSOR 1

POWER

FUEL INLET

1 2 ... 32 33 34 35 36 37 38 39 40 41 42 ... 85 86

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Proheat M80 Manuale di Servizio Pagina 37

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