MEGA Corp. MSC-OPS-1 - Manual (Page 10)

2-1
MSC/MST-OPS-1
31 Dec 2013
SECTION 2
System Description
Contents
WATER TANK (MSC/MST)
The MEGA steel water tank consists of a water tunnel,
primary floor, vertical baffles, bulkheads, outer skins,
internal piping and external piping. The tank design
is patented and known as the MEGA Anti-surge
Stabilization Tube (MAST).
The MAST is the backbone of the structure and
provides mounting for transverse baffles. The baffles
add to tank strength and dampen water surges. The
forward and rear baffles are reinforced with vertical
beams to provide mounting for the gooseneck and
rear axle bogie respectively. External and internal
piping is also used to carry water from the water
pump to spray heads, water cannon, spray bar, hose
reel, dump bar and tank drain.
Early MSC/MST's may have a Berkley water pump
(B4J) installed. Contact MEGA Corp for more
information.
WATER PUMP
MSC/MST units are configured with different types of
water pumps and are based on the size of the water
tank. Typically the 5,000 - 7,000 gallon tanks are
configured with a smaller pump (4 inch inlet & 3 inch
outlet) while the 8,000 - 12,000 gallon tanks are
configured with the larger water pump (6 inch inlet &
4 inch outlet). The water pumps are very similar in
design and for the purposes of this manual the M-4 (6
inch inlet & 4 inch outlet is used to present
component information.
M-4 WATER PUMP
M-4 Water Pump major components and their
functions are:
1. Bracket – Main frame of the pump that allows a
pump to be bolted to the tanker and provides the
means to direct mount the hydraulic drive motor.
2. Volute Case – A “snail shell” shaped case that
encloses the impeller. It is narrow at the center
and enlarges from there to the discharge area.
6
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7
3
4
5
2
Water Tank (MSC/MST) ..................................................2-1
Water Pump........................................................................2-1
Hydraulic Drive Motor ....................................................2-2
Cab Controls (Analog) ....................................................2-3
Cab Controls (Digital)......................................................2-5
Ground Speed Sensing (GPS) Control ......................2-9
Water Cannon System ....................................................2-11 Spray System .....................................................................2-12
Dump Bar............................................................................2-13
Hose Reel ............................................................................2-13
Tank Drain...........................................................................2-14
Fire Suppression System ...............................................2-14
Suction Loading (If Equipped) ....................................2-14
Braking System .................................................................2-15