HEAT PUMP WATER HEATER COMPRESSOR CRITERIA FOR LONG LIFE SYSTEM
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(21) Use the refrigerant of specified brand. When the refrigerant not specified used, it will possibly cause trouble
of the performance and reliability of the compressor by the impurities in the refrigerant.
(22) The lead wires should be connected to hermetic terminals without being touched on the surface of the
compressor.
(23) The quantity and kind of contamination (the process materials) in the cycle should be grasped and
managed. Carry on reliability test that input contamination a lot than anticipated contamination
quantity.
(24) To avoid water and impurity into he refrigeration system and make sure no leakage of refrigerant during the
operating course. It’s required to direct the erector and maintenance man of air-conditioner.
(25) Adjust the start-up torsion of the compressor to above 0.55Nm by inverter. Confirm and measure the start-up
current if change the parts and design.
25.
P R O C E S S L I M I T A T I O N S
25.1 The degree of vacuum in the refrigerating system should be less than 20Pa
{150×10
-3
mmHg}at room temperature just before charging refrigerant.
The quantity of water should be less than 0.2ml.
25.2 The weight of foreign particles on the inside surface of the heat
exchanger tubes should be less than 0.05g/m
2
.
Metallic dust should not be permitted to enter the refrigerating system.
This value means the weight of foreign particles filtered after washing
inside surface of the heat exchanger tubes with R-11.
Summary of Contents for Highly WHP07850VUK
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