OM-NGB/3 13
Maintenance
Your Groen boiler is designed to minimize maintenance, but certain parts may need
to be replaced after prolonged use. For the most part, no user adjustments should
be necessary. If a need for service arises, only Groen personnel or Authorized Groen
Representatives should perform the work.
Among the most common problems is the rapid build-up of scale in the boiler. To avoid
this, always supply water that has a low mineral content, which meets the standards
described in the Water Quality section of this manual.
A. Periodic Inspection
The unit should be inspected by a qualified service technician at least once each
year. The inspection should include electrical wires and connections, cleaning the
inside of the control enclosure and pilot burner adjustment, if required.
At the back of this manual (with the information about our warranty) is a
Maintenance and Service Log. Each time maintenance is performed on the unit,
enter the date on which it was done, what was done, and who did it. Keep this log
with the warranty.
In addition to yearly inspections by a qualified service technician, a weekly check
of the following will help prevent down time and ensure continued efficient
operation.
1. Pressure gauge operation
2. Proper water level (gauge)
3. Strainer in water feed line (clear?)
4. Air inlets for gas burner jets (clean?)
5. Pilot burner flame (blue? Envelops sensor?)
6. Drain piping (free running? No blockage?)
At least twice each month, check the safety valve to be sure it is working properly.
When pressure reaches five PSI on the gauge, lift the lever to vent steam, then
release it, allowing it to snap back into place.
B. Component Replacement
NGB/3E boilers are easy to service. The design is simple, and controls are readily
accessible.
Before replacing any part,
COMPLETELY SHUT OFF THE GAS AND ELECTRICAL
POWER TO THE UNIT.
When breaking (opening) a gas pipe connection, allow five
minutes for gas to dissipate before proceeding.
When the pipes have been reconnected, check for leaks with a thick soap solution
or other suitable leak detector.
Do not use flame to check for gas leaks.
WARNING
USE ONLY GROEN-SUPPLIED PARTS.
USING SUBSTITUTE, UNAUTHORIZED OR
“GENERIC” PARTS CAN CAUSE BODILY
INJURY TO THE OPERATOR AND DAMAGE
THE EQUIPMENT.
WARNING
DO NOT EXPOSE SKIN TO ESCAPING STEAM.
SEVERE BURNS MAY RESULT.
One of the pressure relief safety valves is
located on the top left rear of the boiler.
