Bard QW3S1, QW4S1, QW5S1, QW2S1 installation instructions Service, Unbrazing System Components

Models: QW5S1 QW3S1 QW2S1 QW4S1

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SERVICE

UNBRAZING SYSTEM COMPONENTS

If the refrigerant charge is removed from a scroll equipped unit by bleeding the high side only, it is sometimes possible for the scrolls to seal, preventing pressure equalization through the compressor. This may leave low side shell and suction line tubing pressurized. If the brazing torch is then applied to the low side while the low side shell and suction line contains pressure, the pressurized refrigerant and oil mixture could ignite when it escapes and contacts the brazing flame. To prevent this occurrence, it is important to check both the high and low side with manifold gauges before unbrazing.

WARNING

Both the high and low side of the scroll compressor must be checked with manifold gauges before unbrazing system components. Failure to do so could cause pressurized refrigerant and oil mixture to ignite if it escapes and contacts the brazing flame causing property damage, bodily harm or death.

Manual

2100-532B

Page

41 of 46

Page 41
Image 41
Bard QW3S1, QW4S1, QW5S1, QW2S1 installation instructions Service, Unbrazing System Components