Technical information

l Daily, or as often as needed
r Checking process fluid level in the pump tank
Check the process fluid level in the water level gauge
on the back of the chiller. If low, see Filling the
Chiller, in the Installation section.
r Verifying pump discharge pressure
While the pump is running, check that the pump pres-
sure gauges are within range. To change the pressure
open or close the From Process valve.
r Inspecting piping for leaks
Check to see that pipes are not leaking. Look for
standing water on the floor or inside the chiller cabi-
net.
r Inspecting the condenser coil for debris
(air-cooled models only). Remove the wire mesh side
panel in front of the condenser coil. Remove any
debris from the coils.
l Weekly, or as often as needed
r Checking temperature and pressure readings
Check that the temperature and pressure display on the
control screen, and that the pressure gauge indicates
normal operation.
r Checking efficiency
Review the performance data on the Maintenance Log
found in the Appendix. If you notice a decrease in
efficiency over time, check all heat transfer surfaces of
the evaporator and condenser for fouling. Clean as
needed.
r Checking refrigerant site glass
There should not be any bubbles. See Checking
Refrigerant Charge, in the Maintenance section.
r Checking reservoir level
Check the water level gauge on the back of the chiller.
If fluid level is low, fill. See Checking Reservoir
Level, in the Maintenance section.
l Monthly
r Inspecting cooling water treatment system
If your chiller uses a cooling water treatment system,
maintain proper chemical levels and follow the recom-
mendations of your water treatment specialist. Change
PREVENTATIVE
MAINTENANCE
SCHEDULE
Portable Chillers UGH024/1103
5-4 MAINTENANCE
To maintain the best perfor-
mance, follow the mainte-
nance schedule and record
information in the
Maintenance Log in the
Appendix.