– 219 –
[When replacing normal as well as faulty compressors] - applicable to MMY-MAP096
∗
,
MAP120
∗
<Dismantling normal compressors>
• Dismantle the normal compressors in the same way as the faulty compressor.
Note:
• Be sure to insulate the removed compressor leads using insulation tape, etc.
WARNING
When detaching a pipe by heating with a burner a welded joint, take care as any oil left in the piping may burn
in a momentary flash of fire when the weld filler metal melts.
<Measuring amounts of oil in normal compressors>
• As was the case with the faulty compressor, measure the amount of oil contained by placing each
compressor on a scale.
Amount of oil in normal compressor: B, C [gal (cc)] = (Weight of compressor as it was dismantled (lb (kg)) - 50
(22.7)) × 0.1249 (1042) (Specific volume of oil: 0.1249 (1042) [gal/lb (cc/kg)])
Note:
• When a compressor is empty, it weighs 50lb (22.7kg).
<Adjusting amount of oil in new compressors>
• Perform the adjustment on the basis of how much oil the faulty compressor contained, A [gal (cc)], and how
much oil the normal compressors contained, B and C [gal (cc)], by following the steps below.
1
Combined amount of oil in faulty compressor and two normal compressors
A+B+C [gal (cc)]: 0
≤
≤≤
≤≤
A+B+C < 0.793 (3000)
(1) Adjust the amount of oil in the three new compressors to 0.264gal (1000cc) each (total 0.739gal (3000cc)).
• Lay the compressors down and draw 0.238gal (900cc) of oil from each of them via their oil equalization
pipes.
Notes:
• Do not draw more than 0.238gal (900cc) of oil from a compressor as it may cause damage.
• If the faulty compressor contained 0.132gal (500cc) or less, there may have been a problem with the oil
equalization circuit, etc. Perform checks in accordance with “12-3. Check Procedure to Search Cause of
Compressor Oil Shortage”.
2
Combined amount of oil in faulty compressor and two normal compressors
A+B+C [gal (cc)]: 0.793 (3000)
≤
≤≤
≤≤
A+B+C < 1.506 (5700)
(1) Adjust the amount of oil in the three new compressors to (A+B+C)/3 gal (cc) each.
• Lay the compressors down and draw [1.506 (5700)-(A+B+C)]/3 [gal (cc)] of oil from each of them via their oil
equalization pipes.
3
Combined amount of oil in faulty compressor and two normal compressors
A+B+C [gal (cc)]: 1.506 (5700)
≤
≤≤
≤≤
A+B+C
(1) Adjust the amount of oil in the three new compressors to (A+B+C)/3 gal (cc) each.
(Insert a hose into the discharge pipe or oil equalization pipe of each compressor and inject (A+B+C)/3-
0.502 (1900) [gal (cc)] of oil using a funnel, etc.)
Summary of Contents for MMY-MAP0724FT6UL
Page 35: ...35 3 5 Parts Layout in Outdoor Unit 072 type Model MMY MAP0724FT...
Page 36: ...36 096 120 type Model MMY MAP0964FT MAP1204FT...
Page 37: ...37 3 6 Parts Layout in Inverter Assembly 208 230V model MMY MAP0724FT9UL...
Page 38: ...38 208 230V model MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 39: ...39 460V model MMY MAP0724FT6UL...
Page 40: ...40 460V model MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 41: ...41 3 7 Outdoor Inverter print circuit board 3 7 1 Interface P C board MCC 1606...
Page 42: ...42 3 7 2 Inverter P C board for compressor MCC 1595 A3 IPDU For 208 230V model MMY MAP 4FT9UL...
Page 43: ...43 3 7 3 Inverter P C board for compressor MCC 1596 A3 IPDU For 460V model MMY MAP 4FT6UL...
Page 44: ...44 3 7 4 Inverter P C board for fan motor MCC 1610 FAN IPDU...
Page 45: ...45 3 7 5 Noise Filter P C board MCC 1608 A B For 208 230V model MMY MAP 4FT9UL...
Page 46: ...46 3 7 6 Noise Filter P C board MCC 1625 A B C For 460V model MMY MAP 4FT6UL...
Page 195: ...195...
Page 197: ...197...
Page 257: ...257 15 EXPLODED DIAGRAM PARTS LIST Outdoor unit 15 1 MMY MAP0724FT9UL...
Page 258: ...258 15 1 MMY MAP0724FT9UL...
Page 262: ...262 15 1 Inverter Assembly MMY MAP0724FT9UL...
Page 264: ...264 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 265: ...265 15 2 MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 269: ...269 15 2 Inverter Assembly MMY MAP0964FT9UL MMY MAP1204FT9UL...
Page 271: ...271 15 3 MMY MAP0724FT6UL...
Page 272: ...272 15 3 MMY MAP0724FT6UL...
Page 276: ...276 15 3 Inverter Assembly MMY MAP0724FT6UL...
Page 278: ...278 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 279: ...279 15 4 MMY MAP0964FT6UL MMY MAP1204FT6UL...
Page 283: ...283 15 4 Inverter Assembly MMY MAP0964FT6UL MMY MAP1204FT6UL...