Mitsubishi Electric PUHY-P-YMF-C Series Installation Manual page 5

[Fig. 9.2.3]
<A> [When shipped from the manufacturer]
A
3
B
1
↓
<B> [After installation]
3
1
1
A Close-packed packing
B Hollow packing
[Fig. 9.2.5]
Replace the solid packing.
A
3
1
B
Hollow packing
A Close-packed packing
B Hollow packing
[Fig. 9.2.7]
A
[Fig. 9.3.1]
B
<A>
<D>
<C>
D
E
I
J
[Fig. 9.2.4]
<A>
Ball valve Ball valve
<C>
(oil balance side) (oil balance side)
F
G
M
H
N
<D> (This figure shows the valve in the fully open state.)
[Fig. 9.2.6]
Ball valve
<B>
(gas side)
C
D
I
J
C
<B>
<D>
F
K
H
G
9.2
Ball valve
Ball valve
<B>
Ball valve Ball valve
(gas side)
(gas side)
(liquid side)
(liquid side)
K
L
O
I
J
Ball valve
<A>
(liquid side)
A
F
B
K
H
G
<D> (This figure shows the valve in
L
the fully open state.)
A Valve stem
B Stopper pin
C Packing (accessory)
D Connecting pipe (accessory)
E Open (Operate slowly)
9.3
<A> (Constant capacity unit)
<B> (Variable capacity unit)
<C> Compressor
<D> Control box
A 10 mm (clearance between units)
B Right side panel
C Left side panel
D Ball valve (oil balance) ø12.7 (flare)
E Oil balance pipe 1 (optional)
F Oil balance pipe 2 (optional)
G Flare connection
D
Tightening torque is 55 N·m (550 kg·cm).
Open and close using a double spanner.
Apply a coat of refrigerating machine oil
on both sides of the flare contact surface.
A
B
C
A Valve stem
B Stopper pin
C Packing (Accessory)
D Distributor (gas) (option)
D E Open (Operate slowly)
F Cap, copper packing
G Service port
H Flare nut
I ø34.93 (PUHY-(P)600YSMF-C)
ø41.28 (PUHY-(P)650/700/
750YSMF-C)
J Field piping
K ø15.88
L To distributor (liquid)
M ø12.7
N To constant capacity unit
O ø28.6
Ball valve
The unit is set vertically between
<C>
(oil balance side)
the compressor and control box.
N
K
F Cap, copper packing
M G Service port
H Flare nut
I ø28.6
J To distributor (gas) inside
variable capacity unit
K ø12.7
L To distributor (liquid)
M To variable capacity unit
N Fastening plate
H Oil balance pipe 3 (optional)
I Seal material (2 pieces, included)
J Through holes for oil balance pipe and
transmission cables
K Brazing
5