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PAGE 36
QUANTUM NXT DI HEATER OPERATION / MAINTENANCE MANUAL
Table 7-2: Visual Inspection Details
ITEM
DETAILS
Plumbing Leaks
Visually check DI water lines outside of heater cabinet for signs of leaks at the
connections. (A leak sensor will detect leaks, but this periodic visual check is
recommended.) Also, visually check bottom of cabinet inside heater module
enclosure for DI water leaks. Tighten fitting(s) if necessary. If heater module
is leaking, contact Trebor for instructions.
Over-pressure Relief
Valve
Visually check the drain line for water running from the heater. The over-
pressure relief valve is factory set to open at 60PSIG. If pressure is less than
60 PSIG and water is still running through the relief drain, the valve may need
adjustment or replacement.
General Electronics
Visually check electronics inside control enclosure for any signs of
overheating, deformation, or corrosion.
Solid State Relays
The SSR’s should be free of corrosion at the terminals and should not have
signs of overheating or deformation. The wires attached to the SSR’s should
be clean and in good condition. Check and tighten mounting screws for
optimum heat transfer to heatsink.
Main Circuit Breaker
The main circuit breaker should be checked for signs of loose connections at
the termination lugs. Damaged lugs should be replaced by Trebor qualified
personnel. The terminals should be checked for tightness.
Distribution Breakers
& Contactors
The distribution breakers and contactors should be checked for signs of loose
connections at termination lugs. Damaged lugs should be replaced by Trebor
qualified personnel. The terminals should be checked for tightness.
Branch Circuit
Breakers
These should be checked for signs of loose connections at the termination
lugs. The terminals should be checked for tightness.
Process Fluid
Thermocouples
Recommend removing and inspecting thermocouples for any signs of wear,
cracking or rupture at tip. Replace any thermocouple that exhibits any of these
signs.