750-96 (revised 2010)
Model CB Packaged Boiler Manual
2-5
2.3 — Water Requirements
FIGURE 2-2. Pressure-Temperature Chart for Hot Water Boilers
2.3.2 — Steam Boiler
2.3.2.1 — Feed Pump Operation
To prevent possible damage to the feed pump mechanism, make certain that all valves in the water feed line are
open before turning on the pump motor. After opening valves, momentarily energize the feed pump motor to
establish correct pump rotation. With correct rotation, close the boiler feed pump entrance switch. The pump
should shut down when the water reaches the proper level.
Feedwater pumps must have adequate capacity to maintain required water level under all operating conditions.
Check feedwater pumps periodically and maintain as necessary to prevent unexpected breakdowns.
2.3.2.2 — Water Feeder Operation
This type of operation is usually applicable to boilers operating at 15 psi steam or less. It is only necessary to
open the water supply line valve and the water feeder discharge valve. The water feeder should close when water
reaches the proper level as shown in Figure 2-3.
NOTE: Prior to operating the pump, carefully check alignment of the flexible coupling if one is used. A properly aligned
coupling will last a long time and provide trouble-free mechanical operation.
Courtesy of: C3 Surplus LLC
Surplus Industrial Superstore
305-428-2777
https://www.c3surplus.com
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