Scheduled maintanence
Table 26: Scheduled maintanence
Procedure Weekly Quarterly Semi-
annually
Yearly Every
hour*
Check the unit operation for
optimal function. Report any
faults or leaks.
X
Overall inspection of unit
structure and components
condition
X
Record system operating
pressures, temperatures,
compressor/fan speeds, EEV
steps
X
Check programmable operating
setpoints and assure they
are correct for the particular
application
X
Check condenser coils, water
pans and VSD heat sink duct
for dirt/debris and clean if
necessary
X
Check compressor superheat
on evaporator and condenser
subcooling¹
X
Measure and record
compressor/fan running
currents
X
Check compressor heaters,
evaporator heaters, and piping
heaters for operation
X
Leak check the chiller¹ X
Disconnect the power source
and lock out; check tightness of
power wiring connections¹
X
Others Refer to the manufacturer’s recommendations
Note:
•
*
Reserved for customer use for any special site-determined requirements.
•
1
This procedure must be performed at the specified time interval by an industry certified
technician who has been trained and qualified to work on this type of Johnson Controls
equipment. Maintain a record on file of this procedure being successfully carried out by the
equipment owner if proof of adequate maintenance is required at a later date for warranty
validation purposes.
113YMAE Air-Cooled Inverter Scroll Chiller and Heat Pump
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