Color Check For Oil Of The Defective Compressor; In Case Of Replacing Of Troubled Compressor Only - Toshiba Super MMU-AP0091H Service Manual

<Color check for oil of the defective compressor>
• Lay down the troubled compressor, extract a little amount of oil from
the oil-equalization pipe, and then check the oil color based on the oil
color sample.
• Determine No. of compressor t be replaced by checking oil color.
• ASTM: Below 4 → Replace the troubled compressor only.
• ASTM: Above 4 → Replace the troubled compressor and the
normal compressor.

[In case of replacing of troubled compressor only]

<Adjustment of oil amount in the service compressor> (Oil amount 1900cc at shipment)
• Adjust oil amount from oil amount of defective compressor: A [cc] by following to the contents below.
1. In case of oil amount of the troubled compressor: A [cc] is 0 < A < 1000
1) Adjust oil amount in the service compressor to 1000cc.
(Lay down the service compressor, and then extract oil by 900 [cc] from the oil-equalization pipe.)
(NOTE)
• Do not extract oil over 900 [cc] because a trouble may be caused on the compressor.
• If oil amount of the troubled compressor is below 500cc, a trouble on the oil-equalization circuit, etc is
considered. Check the compressor based upon "15-3. Check procedure search the cause of com-
pressor oil shortage".
2. In case of oil amount of the troubled compressor: A [cc] is 1000 < A < 1900
1) Adjust oil amount in the service compressor to A cc.
(Lay down the service compressor and then extract oil by (1900 - A) [cc] from the oil-equalization pipe.)
3. In case of oil amount of the troubled compressor: A [cc] is 1900 < A
1) Adjust oil amount in the service compressor to A cc.
(Insert a hose into the discharge pipe or oil-equation pipe of the service compressor, and then add oil by
(A - 1900) [cc] using a funnel or so on.)
Oil-equation pipe
244
Compressor
Compressor