280490 FGSH-450
- Owner’s Manual
Rev: 03/25/13
Page: 14
Operation… continued
Raising and Lowering the Boom:
The up and down movement of boom on FGSH-450 lift is achieved by a Hydraulic Pump/Actuator
which is controlled by Pump Handle, and Control Valve as shown in Figure 25.
Raising the Boom:
The control valve must be in the CLOSED position (control valve positioned towards pump handle) to
move the pump handle up and down to raise/elevate the boom and the patient as shown in Figure 23.
Lowering the Boom:
The control valve must be in the OPEN position (control valve positioned away from pump handle) to
lower the boom and the patient as shown in Figure 24. The rate of descent can be controlled by vary-
ing opening of control valve.
Figure 23
Figure 24
Pump Handle
Closed
Open
Control Valve
Figure 25
Caution: Full opening of control valve may drop the boom suddenly or completely,
could result in serious injury to the individual being lifted and/or damage to the lift.
Open the control valve slowly to lower the individual being lifted.
NOTE: A safety gate is part of the hydraulic system that maintains a SLOW constant descent of
the boom regardless of how far the control valve is opened.