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H E A T P U M P W A T E R H E A T E R C O M P R E S S O R C R I T E R I A
18 Purge parts with dry nitrogen or dry air to remove remains in parts (dust, detergent, etc.)
before assembly of system. Time fur purging: over one second for pipe; over three seconds for
heat exchanger. Purging pressure: 0.9±0.1MpaG. Dew point of dry air: Below –20℃.
The motor winding temperature should be less than 149℃and hermetic terminal body
temperature should be less than 177℃in process of manufacturing.
19 Apply for vehicle
The compressor should not be used on moving equipment such as automobiles,trains,ships, etc.
20 Installation
The rotational axis of compressor should be kept vertical during operation. But in actual
application the axis incline must be within 5°at all directions during operation.
21 Pipe vibration
The displacement of the pipes, which connect from the compressor to other parts of the
refrigerate-or systems, should be less than 0.8mm(1/32")when the compressor is operating at
allowable rotational speed range and voltage range of rated ±10%.
Displacement in excess of 0.8mm(1/32") will require changing tube length and/or routing.
22 Connecting tube design
In designing and routing tubing that connect from the comprssor to the other parts of the air
conditioner, following should be considered.
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