HARBEN E Series, Operation & Maintenance Manual

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6. Once you have completed your jetting work and are ready to retrieve the nozzle
decrease the engine speed to idle. The unit will be running at around 700 psi. It is
recommended that you rewind your hose while under some sort of pressure. A tightly
wound hose that is re-energized could crush the drum of the reel. (H&S Section 3 and
6)
7. Rewind hose. Once the orange leader hose becomes visible from the pipe, divert the
water back to the tank, and continue to fully rewind the hose. Remove nozzle and
secure hose to adapter for “travel mode”.
4.8. Harben
®
Jump Jet
The Harben Jump Jet system is a unique and exceptionally effective addition to the Harben
high-pressure pump which increases the effective duct cleaning distance up to and often
beyond 500ft. The Jump Jet operation will help the jet to travel further up the duct. When
required the operator can switch on the Jump Jet to create a cyclic vibration in the jetting hose.
The vibration travels along the entire length of the hose reducing friction between itself and
the duct wall and allowing the de-silting nozzle to continue moving into the duct, cleaning as
it goes.
To operate the jump jet, open the jump jet valve on the control panel of the unit.
NOTICE: Do not exceed the 4000PSI by fitting a smaller nozzle than is recommended. This will cause
the burst disc to open. The maximum engine speed is 2375 rpm
NOTICE: DO NOT EXCEED THE MAXIMUM OPERATING PRESSURE OF 4000 PSI. IF YOU
DO SO YOU RUN THE RISK OF INJURY, AND DAMAGE TO EQUIPMENT