Vulcan-Hart 7595 Manual de usuario descargar pdf (Pagina 13)

PROBLEMS AND CAUSES (Millivolt System)

PROBLEM CAUSE

Possible High Drop Out in Safety Operator portion of valve assembly.

Possible low output powerpile cartridge.

Possible loose wiring and terminal connections.

Pilot burner lights and Safety "holds in" but

"drops out" when Thermostat is turned "ON"

(See below also)

Pilot flame adjusted too low, increase.

a) Check all wiring and connections. See that terminals are not touching another

terminal and connection of wire to Safety Operating house is tight and clean.

b) See testing Powerpile cartridge and Safety Operator with Millivolt Meter for

accurate check for these items. If meter is not available, replace automatic pilot

magnet or entire valve. If unit will still not operate, replace Powerpile.

Possible faulty thermostat.

Possible faulty Diaphram Valve.

Possible loose wiring and terminal connections.

Pilot burner lights and Safety "holds in" but

unit will not operate when Thermostat is

turned "ON".

High Limit Shut Down (See High Limit Control Instructions)

a) Check wiring as above, See testing of Diaphram Valve and Thermostat.

Erratic operation. Unit may operate without

trouble for one hour or several days.

This is borderline condition of (1) and same checks and tests are required.

"G" Control System (Millivolt)

a) Defective thermosat (Robertshaw "GS")

b) Leak in bleed gas system, Check tube fittings at thermostat and safety valve.

Unit comes "ON" when control lever is

turned "ON" even though Thermostat is

"OFF"

"E" Control System (120V)

a) Defective thermostat (Robertshaw "KX")

b) Thermostat terminals touching one another.

c) Thermostat wire insulation gone and bare wire grounded to unit.

Check gas pressure at sub-manifold fitting on fryer when unit in operation and all

other equipment on same gas line in operation.

Pilot burner flames adjusted properly but

fluctuate to very low and blow out easily.

Pressure at sub-manifold (pipe on which burners are mounted) should not be less

than 3"W.C. (nat. & mixed) or 11 "W.C. (propane) gas. Some local gas utilities will

make check if requested.

114590-10

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Vulcan-Hart 7595 Manual de usuario Pagina 13

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