User guide

Maintenance
39-O 4/00
Problem Cause Remedy
Water pump will not come 1. Scale on Probes Check and clean or replace as necessary.
on at times
2. Bad Pump Contactor Check to see if contactor is being powered.
Check to see if contactor coil is pulling in. Replace if
necessary.
3. Bad Pump Motor Check the incoming power to the pump to be
sure it is receiving power. If power is present but motor
does not run, replace it.
Boiler has after burn when 1. Bad Oil Valve Check to see if something is holding oil valve
boiler shuts down open after it is to be closed. Clean or replace.
Oil fumes coming out 1. Bad draft condition Check draft with a gauge. Draft should be a -.02” to -.04”
around the oil pump (-0.508 to -1.016 mm) W.C. with burner off or -.04” to -.06”
housing on shut down (-1.016 to -1.524 mm) W.C. when operating. May need to
install a barometric damper.
2. Venting of room Check to see that doors to boiler room are closed to
prevent air from being pulled out of the boiler area. Make
sure proper openings are available as described in the
manual.
Boiler Flooding 1. Pump does not Dirty Probes. Clean or replace as necessary.
shut off
2. Relay failed Make sure relay is plugged in tightly. If so,
replace water level relay.
3. Ground connection Check for tightness and clean.
4. Vacuum created with As the boiler cools off, it pulls water from the system
boiler off piping. To prevent this, add a 1/4” (6 mm) check valve on
the steam gauge assembly piping, which closes under
presssure and opens under vacuum.