©2009McQuay
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5 Notice
Inspection
As soon as the unit is received, it should be inspected for any damage that may have occurred in transit.
If damage is evident, it should be noted on the carrier’s freight bill. A separate request for inspection by
the carrier’s agent should be made in writing at once.
Concealed damage must be reported within 15 days of receipt of shipment. Check shipment against the
bill of lading to verify that all items were delivered. Any shortages should be noted on the delivery receipt,
and a claim filed immediately.
Instruction for use
1) Suitable room temperature setting
It is advisable to comfort every one in the conditioned space, so the temperature setting shouldn’t be too
high or too low.
It is recommended that the setting should be within the range of from 26℃ to 28℃ when cooling, from
18℃ to 23℃ when heating.
2) Winter anti-freeze of chilled water circulating in the hydraulic system
All the chilled water in the hydraulic system must be drained out completely during unit shutdown in
winter, to avoid water piping damage due to freeze.
3) Make sure the air side ventilation is good.
These obstacles may cause performance deficiency or shutdown of the air conditioner.
4) Antirust
Please take antirust measures and regularly remove rust when using water pipe vulnerable to rust to
connect chilled water system
5) Conducting regular chilled water maintenance, this contributes to ensure safe, high efficiency and
consistent operation.
6) Only clean water is suitable to fill in system, in addition, install the high efficiency water strainer, which
is provided by McQuay, on the upstream pipe to unit water inlet
7) Special attention to winter antifreeze
During long period shutdown in winter, the water in system must be completely drained out. Please
refer to the diagram below and the labels stuck on unit.
Add proper quantity anti-freezer such as ethylene glycol into the hydraulic system if the unit is not on
duty for short time.
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