User Manual

SIERRA FRYERS SERVICE
SIERRA OPERATOR’S MANUAL 170911 PAGE 18
SERVICE
CHECKING AND ADJUSTING AUTO SAFETY PILOT
The pilot flame should surround the thermopile for 1/2". It must be large and sharp enough to cause the
thermopile to glow a dull red, or sufficient to hold the safety valve open.
1. Remove pilot adjustment cap
2. Adjust pilot key to provide properly
sized flame shown in diagram B.
Diagram A shows an improperly
adjusted pilot
3. Replace pilot adjustment cap.
TROUBLESHOOTING
Problem
Likely Cause
Burners do not come on
Gas supply to unit off.
Combination gas valve is in “OFF” or “PILOT” position.
Pilot not ignited.
Thermostat not “ON.”
Pilot will not stay ignited
Combination gas valve is in “OFF” position.
Pilot gas not adjusted properly.
Gas supply to unit off.
Bad thermopile.
Dirty thermopile connections at combination gas valve or high limit.
Clogged orifice.
Draft condition.
Air in gas line.
Improper ventilation system.
Pilot produces carbon deposits
Unit connected to wrong gas supply.
Pressure not adjusted correctly.
Pilot gas not adjusted correctly.
Burners produce carbon deposits
Wrong size orifices.
Connected to wrong gas supply.
Pressure not adjusted correctly.
Flue obstructed.
NOTE: Vibrations or shock caused by shaking or pounding baskets on top surface or by slamming door may
cause Hi-Limit Control Switch to open. If this condition persists, additional cushioning may be added to the
rubber grommets supporting this control to absorb these shocks.