CSZ ZP 16, Installation, Operation & Maintenance Manual, Page: 66 / 88

MAINTENANCE WITH Q&A
Page 5-4
11. Electrical Panel
Check for components and wires which may vibrate loose during operation.
Check for signs of contactor or relay arcing. Check to see that power and
ground connections remain secure.
12. Operating Current
Check the operating current of the compressors,heaters, circulator and
other components with an Ammeter. Maximum operating values are shown on
the electrical schematic.
13. Check GFCI Receptacle(s) (If Applicable)
Check per instructions on the receptacle. Location of the receptacle(s) is
indicated on the electrical schematic.
14. Tubing Abrasion
Check for evidence of friction wear on all refrigeration lines. Particular care
should be taken in inspecting capillary tubes to pressure gauges/transducers.
Check lines any time the system is shut down.
15. Oil Pressure (Semi-Hermetic Compressors Only)
The oil pressure should run from 15 to 50 PSIG above the suction pressure of
the compressor. A reading below 15 PSIG should be investigated immediately.
16. Humidity Sensor
It is recommended to perform this routine maintenance monthly to avoid
inaccurate readings. If you are having trouble achieving levels or if you can see
dirt, please make sure to clean the sensor.
Depending on the conditions of measurement, the dust fi lter should be checked
from time to time. Corroded, discolored, or clogged fi lters should be replaced.
17. Product High Limit (Check every 3 months)
Check for proper operation by lowering the setpoint and tripping the safety.
18. Water Strainer (Water Cooled Units)
Check/Clean the water strainer (if equipped).
YEARLY
19. Water-Cooled Condenser (If Applicable)
Annually check the condenser for buildup of scale on the condensing surface.
This interval may need to be shortened if the buildup is of a substantial amount.
20. Chamber Controller Calibration/Veri fi cation
Calibrate/Verify the chamber controller settings if all instruments in your facility
are periodically calibrated to one device (metrology), or if a measurement
system component fails. The calibration/veri fi cation procedure is located in the
Controller Manual which accompanied your unit.
Voltages dangerous to
life are present in this
equipment.
Electrical
service must be performed
by qualified electricians
only. Failure to follow these
instructions may result in
personal injury and/or loss
of life.
WARNING !