User Guide

Field Service Checklist
20
© Copyright 2007, Maxitrol Company. All Rights Reserved.
Observed Problem: Possible Cause: Remedy:
C.
Continuous low
re (electronics
OK), continued.
2. Plunger missing,
jammed or
improperly
installed.
2. Inspect. Plunger
should be smooth,
clean and operate
freely in solenoid
sleeve.
Clean or replace
plunger if
necessary. Do not
use lubricants of
any type.
D.
Incorrect low re,
erratic or pulsating
ame.
1. Incorrect
by-pass metering
adjustment.
1. Adjust to proper
low re. See Valve
Adjustments
(pg.29) for low re
adjustment.
2. Excessive negative
burner pressure.
2. Close main gas
supply and measure
manifold pressure
with blower
operating. Reading
should be less than
1.5˝ w.c. negative
pressure.
If reading is greater
than 1.5˝ w.c.
negative pressure,
check for clogged
lters or other inlet
air restrictions.
Consult factory for
other solutions.