MEGA Corp. MTT-OPS-1 - Manual (Page 14)

MTT-OPS-1
13 Nov 2013
SECTION 2
System Description
2-5
CAB CONTROL SYSTEM (DIGITAL)
This system is designated as a Digital integrated
Spray Control System (DiSCS). The system is
comprised of control boxes, logic controllers, sensors,
and cabling. It is a multi-function control system with
a separate joystick box that is mounted in the vehicle
cab. These two boxes control all water tank functions.
The master switch box operates the water pump,
spray heads, intermittent spray, work lights, hose reel,
dump bar, suction loading, and tank drain valve. The
master switch box also provides indications of tanker
water level and water pump protection features. The
remote mounted joystick box operates the water
cannon, adjustable nozzle and foam suppression. The
cab controls require 12/24 VDC vehicle power to
operate.
ABBREVIATIONS AND DEFINITIONS
AUX1 – Auxiliary or additional optional function
BFV – Butterfly Valve
DMPBAR – Dump bar for heavy spray of water close
to ground. Can be either a gravity or pressure dump
bar (pressure dump bar requires water pump
activation to operate).
DRAIN – Drain (gravity or pressure) for
evacuation of water from tank, mounted typically at
the rear of the tank.
KPH – Kilometers per hour
LT VSS – Left Vertical Side Spray
LTC – Left Center Spray Head
LTR – Left Rear Outer Spray Head
MPH – Mile per hour
RAMP – Ramping Control feature. Rate of increase or
decrease in speed of water flow during PUMP
engagement or disengagement
RT VSS – Right Vertical Side Spray
RTC – Right Center Spray Head
RTR – Right Rear Outer Spray Head
The master switch box control functions operate as
follows:
LT CENTER Opens or closes left center rear
spray head.
RT CENTER Opens or closes right center rear
spray head.
RT REAR Opens or closes right center rear
spray head.
RT VSS Opens or closes right vertical side
spray head.
RT BUMPER Opens or closes right front
bumper spray head.
DUMP BAR Opens or closes dump bar BFV.
DRAIN Opens or closes tank drain BFV.
Control Function
Master
Switch Box
Joystick Box
Control Function
POWER Provides power for all cab control
functions.
PUMP Routes vehicle hydraulic system
pressure and flow to the water
pump hydraulic drive motor.
INTMNT Intermittent setting.
Activates or deactivates system
timer function.
LIGHTS Provides power to work lights.
t ON
(Intermittent
timer—manual
mode) Sets ON time of selected spray
heads when the timer switch is in
the intermittent (INTMNT) posi-
tion.
Scale: adjustable from 5 seconds
to 30 seconds.
RATE
(GPS Auto Mode) Increases or decreases amount of
water dispersed during a cycle
when AUTO switch is on (see
extended description).