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Inspecting the Lamp Socket:
When replacing lamps, inspect the lamp socket contacts and related hardware.
They should be inspected for corrosion of the metal contact, deterioration of the
material or burning.
1) Be sure all power to the equipment is disconnected.
2) Inspect the condition of the socket retainer caps. If they show signs of
cracking or any chemical degradation, they should be replaced.
3) Inspect the condition of the lamp socket (resilient boot) and the metal
lamp contact imbedded in the end with the lip seal.
4) Metal contacts must be clean, free of corrosion and straight.
5) Resilient boots must be clean, free of cracks and free of any chemical
degradation.
6) Lip seals must be pliable, unbroken and fit snugly over the ceramic lamp
sockets.
7) The wires must be clean, with all insulation intact and no signs of
brittleness.
In case any of these descriptions are not prevalent, replace the entire lamp socket
assembly.
Ballast Replacement:
Ballast replacement is not part of the UV unit’s routine maintenance. However, in
the event that the ballast needs to be replaced, the following procedure should be
followed:
1) Power down the UV unit by returning the unit isolator switch, if installed, to
the “OFF” position. If not, ensure that the power to the unit is removed by
opening the switch or breaker upstream of the UV unit.
2) Locate the old ballast to be replaced. Refer to the electrical diagram, if
necessary.
3) Isolate the old ballast from the rest of the system by disconnecting the
ballast connector.
4) Remove and discard the old or defective ballast.
5) Install the new ballast.
6) Reconnect the ballast connector(s).
7) Restore the power to the UV unit by turning the unit isolator switch to the
“ON” position or by closing the upstream switch or breaker.
8) Turn the power “ON” and resume operation. Whenever new lamps have
been installed, follow all resetting instructions.
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