Algas SDI Direct Fired 120/60H, Operation & Maintenance Manual

Page: 37 / 56

Troubleshooting
Algas-SDI Operation and Maintenance Manual
– P/N – 52642
5-27
TROUBLESHOOTING TREE #1
PILOT WILL NOT LIGHT
CHECK THE BURNER
INPUT PRESSURE
REFER TO PAGE 1-3
DISCONNECT THE PILOT
FUEL LINE FROM THE
THERMOSTAT AND
CHECK PRESSURE AT
THE THERMOSTAT PILOT
CONNECTION BY
PRESSING THE PILOT
BUTTON DOWN
PRESSURE IS OK PRESSURE IS HIGH/LOW
ADJUST
REGULATOR
VERIFY YOU
HAVE A
MINIMUM OF 6
PSIG INPUT TO
REGULATOR
DETERMINE CAUSE OF LOW
PRESSURE AND REPAIR
NO PRESSURE
REPLACE REGULATOR
PRESSURE IS OK
LIGHT PILOT
AND CHECK
OPERATION
PRESSURE WILL
NOT ADJUST
INLET PRESSURE
IS LOW
REPLACE THE
REGULATOR
RETEST THE
VAPORIZER
INLET PRESSURE
IS OK
REPAIR OR
REPLACE PILOT
ASSEMBLY
CHECK PILOT
TUBE AND PILOT
ORIFICE FOR
OBSTRUCTIONS
REPLACE
THERMOSTAT
RETEST THE
VAPORIZER
PRESSURE
IS OK
NO PRESSURE