Toshiba MMY-MUP0801HT7JP, Service Manual

Page: 264 / 309

Model:
MMY-MUP 14A1*, 1601*, 1801* and 2001*
For 14A, 16, 18, 20HP
[When replacing troubled compressor only]
<Measuring amount of oil in troubled compressor>
Put the troubled compressor above the scale to measure the amount of oil.
Amount of oil in troubled compressor: A [cc] = (Weight of compressor as it was dismantled (kg) - 42.6kg) x
1042
(Specific volume of oil: 1042 [cc/kg])
*
The weight of the compressor without oil inside is 42.6 kg.
<Adjusting amount of oil in new compressor> (3000 cc at shipment)
• Perform the adjustment on the basis of how much oil the troubled compressor contained, A [cc], by following
the steps below.
1
Amount of oil in troubled compressor A [cc]: 0
d d d d d
A < 2500
(1) Adjust the amount of oil in the new compressor to 2500cc.
(Lay the new compressor down and draw 500 [cc] of oil via the oil-equalization pipe.)
Notes:
• Do not draw more than 500 [cc] of oil as it may cause damage to the compressor.
• If the troubled compressor contained 500cc or less, there may have been a problem with the oil equalization
circuit, etc. Perform checks in accordance with “11-3. Check Procedure to Search Cause of Compressor Oil
Shortage”.
Compressor
2
Amount of oil in troubled compressor A [cc]: 2500
d d d d d
A <
3000
(1) Adjust the amount of oil in the new compressor to A cc.
(Lay the new compressor down and draw (3000 - A) [cc] of oil via
the oil equalization pipe.)
3
Amount of oil in troubled compressor A [cc]: 3000
d d d d d
A
(1) Adjust the amount of oil in the new compressor to A cc.
(Insert a hose into the discharge pipe or oil equalization pipe of the
new compressor and inject (A-3000) [cc] of oil using a funnel, etc.
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