Toshiba MMY-MUP0801HT7JP, Руководство по обслуживанию

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MMY-MUP0801*, 1001*, 1201* and 1401*
>
Check items and procedures to follow when checking oil circuit with compressor(s) disconnected
Procedure Location Check item
Leakage of outdoor PMV
Leakage of check valve in
discharge pipe convergent
section
A, B, D
1) With PMV 1, 2 and 4 fully closed, apply pressure to the check joint of liquid pipe with nitrogen, and check the
pressure at the check joint of discharge pipe.
If the pressure at the check joint of discharge pipe increases, there is a leak from PMV1 (A) or PMV2 (B) and
check valve of discharge pipe (D). Replace the troubled parts.
2) If the pressure does not increase, fully open outdoor PMV 1, 2 and check the pressure at the check joint of
discharge pipe again.
If the pressure increases, there is a leak from the check valve of discharge pipe (D). Replace the part.
Clogging of SV3D valve
Clogging of oil-return capillary
Clogging of oil-return distributor
F
3) With pressure applied to the check joint of discharge pipe with nitrogen, manually open the SV3D valve. If gas
does not escape from the suction pipe section of the disconnected compressor, the SV3D valve, oil-return
capillary or oil-return distributor is clogged. Replace the part.
TE2
TO
M
TS3
TS1
Fan
Fan motor
PMV1
4-way valve
High-pressure
sensor
Low-pressure
sensor
Accumulator
TE1
TG2
TG1
In
verter h
eat
si
nk
Sub heat exchanger
PMV2
Main heat exchanger
TL2
TL1
㪦㫌㫋㪻㫆㫆㫉㩷㪬㫅㫀㫋㩷㩿㪏㪃 㪈㪇㪃㩷㪈㪉㪃㩷㪈㪋㪟㪧㪀
㪤㫆㪻㪼㫃 㪑㩷
MMY-MUP0801*, 1001*, 1201* and 1401*
SV
䌁
䌂
䌄
㪝
TL3
PMV4
Liquid side
Service valve
Gas side
Service valve
Subcool
Heat exchanger
SV
Solenoid
valve
Capillary
tube
Check
valve
Check
joint
Strainer
Temperature
sensor
Symbol
Distributor
SV
SV3F
TK1
TD1
SV
C
o
m
p
re
sso
r
(Inv
erter)
SV41
High-
pressure
switch SV3D
SV
O
Oil
separato
r
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