Instructions for service
procedures to be carried out in the field are demonstrated in this section. Steps of
assembly and disassembly are in the order in which they will be encountered by
servicepersons. The names of the parts listed within this manual are the same as those
listed on the B&G Parts Lists. All service operations can be completed with common
hand tools. These instructions have been written to specifically reflect the Series 100,
HV, PR and 2” booster pumps. References to certain features such as over/under motor
brackets and plastic impellers do not apply to all booster pumps.
Note: Removal of the pump body from the system is not necessary unless the flange
gaskets are leaking or the pump body itself is damaged. In either case, it will not be
necessary to remove the flanges. |
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System Preparation
The electrical supply must be turned off and the pump service valves must be closed before
servicing procedures begin. If no service valves are installed, the city water supply
valve should be closed.
The system should then be drained by opening the boiler drain valve and the vent near the
top of the system. If a Flo-Control valve is installed and there are balance valves on the
returns, then the balance valves may be closed to isolate the boiler from the system. The
Flo-Control valve will act as a check valve on the supply and only the boiler will need to
be drained. Open a vent between the boiler and the system.
 ! WARNING: Hot Water Hazard
Before draining the system, allow water to cool to at least 100°F, open the drain valve
(take precautions against water damage) and leave the drain valve open until servicing is
completed. Failure to follow these instructions could result in serious personal injury
and/or property damage. |
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