WT5HP/WTE5HP/WT5HPSG WATER TRAILERS • OPERATION MANUAL — REV. #1 (03/14/17) — PAGE 23
OPERATION
There is an operating mode (Figure 19) that could be
harmful to your water pump. Never operate the water trailer
with the spray bar control handle in the vertical position (rear
spray on), and the manifold control handle in the horizontal
position (suction/left) with the engine running.
This mode of operation with no hoses attached causes the
pump to draw in air creating unnecessary back pressure.
Never operate the water trailer in this mode.
The recommended operating modes of the water trailer
are shown in Table 5.
NOTICE
NEVER
operate the water trailer with the spray bar and
manifold control handles as shown in Figure 19.
This mode of operation with the engine running causes
the pump to draw in air, creating unnecessary back
pressure.
NOTICE
Prior to engine start, the pump
MUST BE
primed. This
is accomplished by removing the Pump Fill Cap and
filling the Pump Casing with water and then re-securing
the fill cap.
Figure 19. Do Not Use Mode (Engine On)
LEFT
MANIFOLD
CONTROL HANDLE
SPRAY BAR
CONTROL HANDLE
ENGINE ON
DRAWING
AIR IN ONLY
DRAWING
AIR IN ONLY
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