Download Installation Operation Maintenance

Operation
Seasonal start-up
• Check water flows and interlocks.
• Check Ethylene glycol
concentration in the chilled
water circuit if glycol presence is
required
• Check operational set points and
performance
• Calibrate controls
• Check operation of all safety
devices
• Inspect contacts and tighten
terminals
• Megger the motor compressor
windings
• Record operating pressures,
temperatures, amperages and
voltage
• Carry out leak test
• Check configuration of unit control
module
• Change the oil as required based
upon results of the oil analysis
made during seasonal shutdown.
Get the 8 condition measurements at
the same time, on each circuit.
• HP
• LP
• Suction temperature
• Discharge temperature
• Liquid temperature
• Water entering temperature
• Water leaving temperature
• Outdoor ambient temperature
Then calculate the sub-cooling and
superheat. No diagnosis can be
accurate with one of these records
missing.
• Check operation of machines/
compare conditions of operation
against original commissioning
data.
• Fill out the visit log sheet and
review with the operator
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