Snorkel MHP34J(Bi-Energy Option) - Manual (Page 42)

■ Ground Control Switches
Figure 7.22 - Ground Control Switches
With the Ground/Platform Selector

set to
ground:
Check that each of the platform moving switches
(
€
through to
ƒ
) cause the MHP12/34J to move
the way it should.
Check both positions of each switch.
For correct operating procedures see the “Opera-
tion” chapter 8.
NOTE
Pay particular attention to the Emergency Stop
switch
„
to see that it turns the MHP12/34J
engine off when the red cover is struck.
■ Emergency Lower
❑ Lower control box
Figure 7.23 - Emergency Lower Valve
With the booms raised open the Emergency
Lower Valve on the top of the manifold valve.
The booms should begin to lower. The rate of lower-
ing can be regulated by the amount the valve is
opened.
To check the slew function when using the manual
emergency lower valve the Master Key Switch
and Emergency Stop switch must be on and the
Platform/ground Selector must be set to ground.
To slew (with the manual emergency lower valve al-
ready open) select the required direction on the
slew toggle switch .
NOTE
The manual emergency lower valve must be
closed after the test to ensure proper boom
operation.
For correct emergency lowering operating proce-
dures see “Emergency Operation” chapter 9.
❑ Upper control box
Emergency lower from the upper control box is
achieved by turning the upper control to on and de-
pressing the foot switch whilst operating the Emer-
gency Lower switch
To slew the unit select the direction required on the
slew toggle switch at the same time. For correct
emergency lowering operating procedures see
“Emergency Operation” chapter 9.
■ Platform Control Switches
Figure 7.24 - Platform Control Switches
page 7 - 6 MHP12/34J – 11447A
7. Daily Inspection and Maintenance