Operating Instruction
Healthcare chiller of the KSC Series
Version „Revision 09“
Type KSC 215-L-U/S
page 33von138
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10
Preventive Maintenance: Weekly Check, Two times a year Check
Service and maintenance should always be carried out by skilled technician and, where possible, under a
maintenance contract. Nevertheless, certain routine work can be effectively carried out by non-specialists and
may become important factor in preventing future damage to the plant.
Weekly Check
1.
Check the working of the compressor:
Look out for too high head temperatures or suspicious noises.
2.
Check the refrigerant charge through the sight-glass
3.
Check that fans are rotating normally and not making unusual noises
4.
Check that the temperatures is within the accepted limit.
If it is not, check that all the separate elements of the unit are working, by switching them on
individually.
If they are not, see the fault finding guide (9 TROUBLE SHOOTING).
Two times a year Check
KKT chillers Inspection Requirements Task List
Tasks List
Task List
Control Cabinet
•
Check and clean filter
•
Replace filter if required
•
Check for contamination, corrosion, damage
•
Vacuum clean the panel
•
Check and tighten cable connections
•
Check all control connections
•
Check cabinet gaskets, replace if leaking or
damaged
•
Check operation of controls
•
Check and calibrate safeties
CHILLER COMPRESSOR
•
Visual inspection of chiller, look for
o
Signs of water, oil, or refrigerant leaks
o
Contamination, Damage, corrosion
•
Check for noise or excessive vibrations of compressor
•
Log Compressor operation into maintellance report
o
Compressor discharge and suction pressure
o
Record refrigerant temperature at
compressor, evaporator and condenser
o
Chilled water outlet temperature
o
Chilled water Inlet temperature
o
Record Compressor current and compare to
rated current
o
Check oil level
•
Check operation of crankcase heater
•
Check operation of all electromechanical devices and
refrigerant control valves
•
Check relief valves