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15. Remove all rust from equipment, clean and
paint.
16. Flush out sediment, etc. from water circuits.
17. Clean all oil strainers.
18. Clean suction strainer – compressors.
19. Check motors and fans for shaft wear and
end play.
20. Check operation and general condition of
microprocessor and other electrical con-
trols.
21. Clean all water strainers.
22. Check drains to make sure water will ow
away from equipment.
23. Drain and clean entire oil system at receiver
drain. Recharge with new clean moisture
free oil. For proper procedure for changing
micronic oil lter and charging oil into the
system, see Start-Up and Operation section.
24. Check compressor coupling. For integrity
and alignment.
25. Check oil pump for wear.
26. Check the calibration of the microprocessor
pressure transducers and RTD’s for accu-
racy.
27. Check mounting bolts for compressor and
motor.
F. System Leaks
There are any number of reasons why leaks
develop in a refrigeration system (i.e. such as
drying out of valve packing, yielding of gaskets,
improper replacement of valve caps and loosen-
ing of joints due to vibration). For these reasons,
the need for periodic leak testing cannot be over-
emphasized. Similarly, when any service opera-
tions are performed on the system, care should
be exercised to insure all opened flanges are
tightened, all plugs that were removed are re-
placed with a suitable thread lling compound,
all packing glands on valve stems are tightened,
and all valve caps are replaced. When operation
is restored, all joints opened or any valves moved
during the servicing should be checked for leaks.
G. Year Round Operation
On a continual basis:
1. Guard against liquid slugging of compres-
sor.
2. Maintain unit in clean condition and paint
as necessary.
3. Grease valve stems and threads for the
valve caps.
When refrigeration equipment is operated 24
hours a day year round, it is highly recommend-
ed that a yearly check of all internal parts be
made (see Service Section). While the highest
material standards are maintained throughout
all Vilter compressors, continuous operation
and any presence of dirt may prove injurious to
the machine. To forestall needless shutdowns
or prevent possible machine breakdowns, the
side covers should be removed yearly, and a
visual inspection be made of the internal parts.
In this way, a small amount of time spent check-
ing machine conditions once a year may prevent
extensive shutdowns later with subsequent
product loss and expensive repairs.
Installation