Mega MAC - Cab Control System (Analog)

MAC/MTT-OPS-1
26 FEB 2019
SECTION 2
System Description
2-4
CAB CONTROL SYSTEM (ANALOG)
Multi-function control box that is mounted in the
vehicle cab to control all water tank functions.
Controls are available for the water cannon,
intermittent spray, water pump, work lights, foam
suppression, adjustable nozzle, system, spray
heads, spray bar, gravity dump bar and tank drain
valve. The control box also provides indications of
tanker water level and a system fuse holder. The
cab controls requires 24 VDC vehicle power to
operate.
The control box and joystick have a modular
design, which allows the joystick to be detached
from its holding bracket and operated separately
as needed. Older hydraulic control boxes do not
have this functionality, but they can be upgraded
to the latest design by MEGA.
The control functions operate as follows:
Control Function
Joystick Sends command signals to the
logic box (electric water
cannon) or hydraulic control
valve assembly (hydraulic water
cannon) to move the water
cannon left, right, up and down.
FOAM Open or closes the foam
concentrate tank in-line control
valve.
FOG On adjustable nozzle water
cannons, adjusts cannon for less
concentrated flow (HOLD for
adjustment)
STREAM On adjustable nozzle water
cannons, adjusts cannon for
more concentrated flow (HOLD
for adjustment)
TIMER OFF Sets OFF time (variable
adjustment 5-100 sec) between
timer cycles of selected spray
heads and dump bar when the
timer switch is in the
intermittent position.
TIMER ON Sets ON time (variable
adjustment 5-100 sec) of
selected spray heads and dump
bar when the timer switch is in
the intermittent position
PUMP Routes vehicle hydraulic system
pressure and flow to the water
pump hydraulic drive motor.
MONITOR Opens the water cannon BFV.
LIGHTS Provides power to work lights.
TIMER Activates or deactivates system
timer function.
DRAIN Opens or closes tank drain BFV.
DUMP BAR Opens or closes dump bar BFV.
WATER LEVEL Indicates tank water level.
SYSTEM Provides power for all cab
control functions.