58
Water Feeder or Pump Controller - Replacement
(Electric Steam Boilers Only)
The water feeder or pump controller is integrated into the piping on the side of Electric
Steam Boilers. It is located no less then two inches (2") above the highest heating element
in the unit. If the water feeder or pump controller is determined to be defective, follow
the steps below to replace the component.
1.
Follow Steps 1 through 5 of the shutdown procedure (page 19) to take the unit
off-line before attempting to replace the water feeder or pump controller.
t
The combination of electricity and water can pose a
very dangerous situation
.
Assure that all power has been
shut off / disconnected and locked out
in an
approved manner, before attempting any installation or maintenance procedures.
2.
After assuring that the power has been turned off and locked out, the pressure bled
from the tank, the water drained, and the unit has had time to cool, tag the wires
attached to the component so that they may be replaced in the same position after
installation of the new component. Remove the wires after tagging.
3.
Break the joints above and below the component.
Note: Depending on the exact design of the unit, it may be necessary to break
additional components loose to provide access for removing the water feeder or
pump controller from the system. If this is the case, care should be taken to not
damage any other components in the system.
4.
Carefully continue to loosen the fittings until the water feeder or pump controller
assembly is free.
5.
After assuring that the new component is rated the same as the component being
replaced, install the new component by aligning with the piping and starting the
fittings. Follow recommendations contained in the manufacturer's documentation,
local codes, or accepted contractor practices as to the use and / or type of joint
compound or sealer at the connections.
6.
Tighten the joints at the water feeder or pump controller, as well as any other
joints that were loosened to allow clearance.
7.
Reconnect the wires to the unit in the same position
8.
Fill the tank to operating level. As the tank is filling, examine all joints and fittings
for signs of leakage.
Summary of Contents for EHB
Page 41: ...38 ...
Page 62: ...59 9 If no leaks are found follow the startup procedures page 17 to put the unit back on line ...
Page 64: ...61 Appendix A cont d ...
Page 65: ...62 Appendix A cont d ...
Page 68: ...65 ...
