JETStream TwinForce Series, Operation Manual

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28
Operation Manual
Flushing the System
With the engine at idle, warming to operating
temperature, flush the system of any debris.
Flushing the system prevents any debris from
clogging the cleaning nozzles and valves which
will cause excessive pressure in the system.
Nozzles must be removed from all equipment
during flushing.
1. If operating at 40K, first open the bleed
valve (Figure 33) and allow any air to purge
from the secondary filter. Once a steady
flow of water exits the filter, close the
valve.
2. Open the manifold drain valve. Allow water
to drain from the valve for approximately
5-10 seconds. (Figure 34).
3. Hold the discharge hose stationary (Fig-
ure 35).
4. With the manifold free of debris, the engine
at normal operating temperature (160°F
(71°C) - 185° F (85°C)) and at idle speed, en-
gage the clutch.
5. Turn the bypass valve clockwise just
enough to obtain a generous flow of water
through the discharge hose. Allow the
hose to flush for about 30 seconds.
Note: A substantial amount of thrust may
occur at the discharge end while
flushing.
6. Decrease flow to the hose by fully open -
ing (counter-clockwise) the bypass valve.
Some water will continue to flow from the
hose.
7. With the engine at idle speed, shift the
transmission to Neutral.
8. Connect the control gun (or other equip-
ment being used) to the discharge hose.
9. With the hose secure and equipment
controlled by another operator, engage
WARNING
! !
Two operators are required to flush the discharge
hose and equipment. One operator must be
stationed at the unit and the other at the
discharge device.
Figure 35: Flushing the Discharge Hose.
Figure 33: Secondary Filter Bleed Valve.
Bleed
Valve
Figure 34: Flushing the Manifold.
Drain
valve
the clutch.
10. Turn the bypass valve clockwise to in-
crease flow through the discharge
device(s). Allow the control gun to flush
for about 30 seconds.