HARBEN 903-1315, Operation & Maintenance Manual

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3.2. Technical Description
3.2.1. Primary Components
The primary components of the Eliminator Vanpack are as follows:

A prime mover in the form of a Kubota 3-cylinder water-cooled diesel engine which
drives a Speck NP25 type high-pressure pump.

The pump can raise the water pressure up to 2900psi (200 bar).

A hydraulically driven hose reel 300 ft of 2 wire braid high-pressure hose with either a
nozzle or gun attachment to deliver the high-pressure water to the selected working
site.

A plastic water tank, acting as a reservoir, ensures the water is settled and non-
turbulent, discharging a smooth lamina flow of uninterrupted air free supply, a positive
head of pressure to the pump inlet and maximising the pumps full potential. The tank
can be filled via the inlet reel by connecting to a mains inlet water supply
o
NOTICE: Turbulent water will cause the pump to run unevenly and cause
excessive wear due to cavitation.

Water is diverted to the hose reel either using a 12VDC hydraulic diverter.

A Hypro 177Micron mesh inline strainer is fitted to the suction line between the tank
and the pump inlet.
Note: This is a critical component which ensures that no contaminants are drawn into the
pump inlet. This filter must be inspected and cleaned daily, if it becomes blocked it will cause
the pump to cavitate.
3.2.2. Engine Monitoring
Engine oil pressure and engine coolant temperature, together with alternator charge rate are
continuously monitored. Activation of the engine pressure or temperature switches will cause
an engine shutdown and the respective ‘FAULT’ to be displayed on the control unit.
Alternator failure will be displayed on the control unit.
3.2.3. Delivery Hose Reel
The hose reel drum on which the delivery hose is wound is driven by a powerful OMR315
hydraulic motor directly coupled to the hose reel hub. Hydraulic power is obtained from a
hydraulic gear pump driven from the engine P.T.O. (See below)