Farr HD8625 Technical Manual page 32

hD8625 8- " 35K T
5
/
ong
8
Valve Operation (Continued):
LIFT CYLINDER
This is a direct-acting valve. Pushing the valve handle forward will cause the lift cylinder to lower the tong vertically. Pulling the valve
handle toward the operator will cause the lift cylinder to lift the tong.
MOTOR SPEED
This valve sets the speed of the two-speed motor. Pulling the motor speed control all the way out sets the motor speed to LOW.
Maximum torque is only available when the motor speed is set to LOW. Pushing the valve handle towards the centre of the tong sets
the motor speed to HIGH, which is useful for rapidly un-threading broken connections.
T M
2.16 echnical anual
I 2.g.2: t l
llustratIon ong
I 2.g.3: t m
llustratIon ong
C C v
Ift ylInDer ontrol alve
s C v
otor PeeD ontrol alve
s & o
eTup peraTion