Specifications

Dimplex Thermal Solutions 1800-YOU-KOOL
pressure gauges and make note of initial
pressures. The pump may need to run for
several minutes to allow any air to be worked
out of the system before regular flow is
established. Any fluid bypass valves in the
system should be factory set according to
customer specifications but may need slight
adjustment in the field. Consult the factory
before making any adjustments to the
system.
5. Check the entire fluid system for leaks and
ensure there is flow throughout the system.
6. After the pump turns on, the temperature
controller will then analyze the process fluid
temperature and determine whether or not
cooling is needed. If the fluid temperature is
above setpoint, the refrigerant compressor will
commence and begin cooling the fluid.
7. Monitor the chiller to ensure it is performing as
designed. The chiller should be able to
maintain the desired fluid setpoint under a full
load from the process. Slight adjustments may
be necessary according to your specific
process. Please consult a technician at
Dimplex Thermal Solutions before making any
changes to the unit.
8. To turn off the chiller process, move the
selector switch to the OFF position. With the
selector OFF, the temperature controller
display will be on to monitor the process, but
indicate the system is off. Keep the chiller’s
main power-disconnect ON even when the
chiller is not in use, unless it is
used to turn the chiller process off
and on. This keeps the power to
the crankcase heater and prevents
compressor damage when starting again.
If the unit is equipped with a fluid maintenance
heater, the heater will operate if the fluid falls
below the factory setpoint and will operate with
the selector switch off.
MAINTENANCE AND SPARE PARTS:
Proper maintenance is the key to extending
the life of your chiller. Routine checks and a
watchful eye will minimize costly repairs and down
time. Establish a regular schedule of maintenance
depending on the amount the chiller is used and
the environment in which it is used. Environments
that are very dirty or dusty will require more
attention than ones that maintain a cleaner
atmosphere.
This list of maintenance items will help to ensure
an operational chiller:
1. Inspect and clean condenser / air filters
Excessive buildup of dirt, oil, and other debris
on the condenser coil will cause refrigerant
pressures to increase and not allow the unit to
perform to its full capacity. Ensure the fins of
the condenser are clean and not damaged to
keep airflow at a maximum. Use compressed
air at no more than 30PSI to blow out the
condenser in the opposite direction of air flow.
If the unit is equipped with air filters, clean
them with compressed air or wash them out
with water and allow drying before
reinstallation.
2. Check water quality/glycol mixture
The process fluid should be clean and free of
contaminants. If the chiller has a reservoir,
check for debris or contaminants which could
reduce the efficiency of your chiller. Check for
normal inlet and outlet fluid pressures through
the chiller. A large pressure differential could
indicate a plugged heat exchanger or dirty
tank. Test the process fluid to ensure proper
freeze and corrosion protection in accordance
with original design specifications. Do not test
the process fluid from the sight glass due to
the lower turnover at that location.
3. Inspect fluid filters
Fluid filters should be clean enough to allow for
proper flow and pressure in the system. An
increased fluid pressure on the system may
indicate a dirty filter. Replacement of fluid
filters should be done at regular intervals to
keep the fluid system clean and free flowing.
Inspect fluid filters shortly after initial start-up
of the chiller and establish a basis for how
frequently they may need to be changed in the
future.
4. Inspect fluid system