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7. Controls - Electric
Ground Control Box
Con trols for op er at ing the MHP15/44HD V2 from
the ground, (lower con trols) are lo cated on the right
side of the column.
Lower controls:
Emergency stop switch
Platform/ground selector switch
Choke
Master key switch
Start switch
Boom speed switch
Stabiliser/boom selector switch
Lower boom switch
Upper boom switch
Jib boom switch
Slew switch
Lift enable indicator
Enable switch
Overload indicator
Height lockout switch (Option)
Fuel / electric selector switch (Option)
Emergency lower switch
1. Emergency Stop: Press the red
EMERGENCY STOP button in, at any time,
under any conditions, and the entire machine
stops, and nothing moves. This switch must
be out (on) for anything on the MHP to work.
Pull the switch and it will pop out (on).
2. Platform/Ground Selector: Must be in the
GROUND position (down) for the ground
control box to work. The switch MUST be in
the PLATFORM position (up) for the platform
control box to work.
Note: This switch also acts as the 'master
key switch'. Turning the key to the central
position and removing the key will effectively
disable all operations.
3. Choke/Cold Start: Hold the switch UP while
you start an engine that is at ambient air
temperature (a "cold" engine). This will choke
the engine.
4. Start Switch: Press and hold this switch
DOWN to operate the starter motor of the
MHP1544HD.
5. Boom Speed: This control determines how
fast the booms move. Set it to SLOW (turtle)
until you are very familiar with the way the
machine works or if the platform is working in
dangerous or cramped surroundings.
page 7 - 2
6. Stabliser / Boom Selector Switch:
Must be in Stabliser (outrigger) position
(down) for the outriggers to work. Once
outriggers are down and set the switch must
be placed in the boom (up) position for the
booms to work.
Con trol switches 7 through 10 are the plat form
mov ing switches. Each is a three (3) po si tion, mo -
men tary con tact, nor mally OFF switch.
7. Lower Boom : UP raises the lower boom.
DOWN lowers the lower boom.
8. Upper Boom: UP raises the upper boom.
DOWN lowers the upper boom.
9. Jib Boom: UP raises the jib boom. DOWN
lowers the jib boom.
10. Slew: LEFT rotates the entire turntable and
boom to the left. RIGHT rotates the entire
turntable and boom to the right.
11. Lift Enable: The platform can only be raised
when this light is lit. When this light is not lit
the platform will not raise because the
outriggers are not properly set.
12. Enable Switch: The enable switch must be
pressed DOWN in conjunction with the
boom/platform moving function you select.
The purpose of this switch is to prevent the
platform/booms from moving if something or
someone accidentally pushes one of the
boom/platform moving controls. The
boom/platform moving switches will not
operate unless the enable switch is held
down at the same time.
13. Height Lockout Switch (Option): This
switch (when fitted), limits the maximum
height of the boom to 10.9 metres (see
Options Chapter)
14. Over load In di ca tor: This in di ca tor
il lu mi nates when the plat form is over loaded
(see Safety De vices Chap ter 3 Page 4).
15 Fuel / Electric Selector Switch (Option):
This switch (when fitted) allows switching
between different motive sources (see
Options Chapter).
16. Emer gency Lower Switch: This switch,
when operated in conjunction with the enable
switch allows the platform to be lowered to
the ground in case of an emergency. (See
the "Emergency Operation" Chapter for
details on this procedure).
Rev B
MHP15/44HD V2 – 13620-1
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