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N N O O T T I I C C E E
C C o o m m p p o o n n e e n n t t D D a a m m a a g g e e ! !
F F a a i i l l u u r r e e t t o o f f o o l l l l o o w w i i n n s s t t r r u u c c t t i i o o n n s s c c o o u u l l d d d d a a m m a a g g e e
s s e e n n s s i i t t i i v v e e e e l l e e c c t t r r o o n n i i c c c c o o m m p p o o n n e e n n t t s s b b e e y y o o n n d d r r e e p p a a i i r r . .
T T o o p p r r e e v v e e n n t t a a r r c c i i n n g g o o r r s s u u r r g g e e s s o o f f e e l l e e c c t t r r i i c c a a l l c c u u r r r r e e n n t t , ,
d d o o n n o o t t u u s s e e w w i i r r e e s s o o r r c c a a b b l l e e s s t t o o j j u u m m p p c c o o m m p p o o n n e e n n t t s s o o r r
b b y y p p a a s s s s t t h h e e m m a a n n u u f f a a c c t t u u r r e e r r ' ' s s s s a a f f e e t t y y s s y y s s t t e e m m s s . .
Federal Clean Air Act
Responsible refrigerant practices are important to the
environment, our customers, and the air conditioning
industry. All technicians who handle refrigerants must
be properly certified. The Federal Clean Air Act
prescribes procedures for handling, reclaiming,
recovering, and recycling of refrigerants and the
equipment that must be used in maintenance
procedures involving potential leakage of HVAC
refrigerants. State and local governments may have
Table 10. Recommended chiller service intervals
Visually inspect the chiller
Log pressure and temperatures
Inspect touchscreen interface panel for alarm history
Clean strainers on the inlet water pipe
Check the compressor oil level sight glass
Confirm the glycol concentration
Confirm the refrigeration pressures
Check the refrigeration liquid line sight glass
Inspect refrigerant pressures and temperature set points
Inspect superheat (10 °F to 12 °F [5°C to 6°C]) and sub-cooling temperatures (10°F to 15°F [5°C to 8°C])
Inspect the evaporator entering and leaving evaporator temperature
Collect water/glycol mixture sample for analysis
Inspect crankcase heaters
Inspect piping for signs of leaks
Inspect refrigerant piping for oil or refrigerant leaks
Observe refrigeration operating pressures
Confirm motor amperage draw and voltage
Confirm chiller superheat and sub-cooling
Check for worn or burned contactors
Inspect all electrical connections and fuses
Inspect each compressor for refrigerant pressures, overheating, oil leaks
Inspect compressor terminals for pitting, corrosion, and loose connections
Inspect compressor oil level
ARTC-SVX001B-EN
additional requirements that must be followed to
responsibly handle HVAC refrigerants.
Inspection and Maintenance
Schedule
Proactive measures should be taken to prevent
potential problems with the chillers. These include
maintaining a operational log and conducting weekly,
quarterly, and annual inspections of the chiller. See
following table.
Daily
A daily visual inspection can reveal obvious problems.
Keep notes of the chiller performance:
•
Log pressures and temperatures.
•
Visually inspect of the unit.
Task
M M a a i i n n t t e e n n a a n n c c e e P P r r o o c c e e d d u u r r e e s s
Frequency
Daily
Daily
Weekly
Monthly
Monthly
Monthly
Monthly
Monthly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Quarterly
Annually
Annually
Annually
Annually
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