Hitachi RAS-8FSXN - Page 51

¿ Details of the gas and liquid stop valves
1. Gas valve.
2. Liquid valve.
A. Plug.
Tightening torque
Gas 50–58 Nm
Liquid 30–42 Nm
B. Hexagonal wrench. To open or close the valve.
C. Valve. Turn to the left: open; turn to the right: close.
Tightening torque
Gas, 8-12 HP 18–22 Nm
Gas, 14-18 HP 20–25 Nm
Liquid 7–9 Nm
D. Check joint. Only a flexible charge pipe may be connected.
Tightening torque
Gas 9–14 Nm
Liquid 14–18 Nm
E. Refrigerant gas/liquid pipe.
F. O-ring.
P. Refrigerant gas/liquid pressure.
C A U T I O N
• Do not force the valve open buffer; this could damage the seat of the valve. A spare valve seat is not supplied.
• When performing the start-up test, open valve to the full. Otherwise, the system may be damaged.
¿ Refrigerant pipe connection
RAS-8FSXN
A
B
C
E
D
F
RAS-10FSXN
A
C
F
G
E
B
RAS-12FSXN
A
HH
C
E
I
F
B
RAS -14 FS XN
A
I
G
B
F
E
RAS -16FS XN
A
II
E
DD
F
B
RAS -18 FS XN
A
H
D
E
I
F
B
A
C
D
B
F
P
F
E
A
B
C
D
2
E
P
1
E
3 Piping work and
refrigerant charge
44
SMGB0065 rev. 1 - 12/2010