HARBEN E Series, Operation & Maintenance Manual, Page: 18 / 80

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3.2. Technical Description
3.2.1. Primary Components
The primary components of the Jetters are illustrated in Figures 2.1-2.6 which are as follows:

A prime mover in the form of an industrial diesel engine drives a Harben P-Type high-
pressure pump.

The pump can produce high-pressure water up to 4000 psi.

Note: See above or section 7 for performance options .

A hydraulic driven hose reel contains up to 500 feet of single-wire braid high-pressure
hose that uses either a nozzle or gun attachment to deliver the high-pressure water to
the work application. The E180 has a rotating hose reel whereas the E-Series has a
fixed hose reel.

Plastic water tank(s) act as a reservoir to ensure the water is settled and non-turbulent.
This allows a smooth, uninterrupted supply with a positive head of pressure to the inlet,
maximizing the full potential of the pump.

The pressure valve directs high-pressure water to the main jetting hose or diverts it
back to the tank.

The control panel includes the engine controller, pressure gauge, throttle, high-
pressure selector, jump jet valve, and hydraulic hose reel controls.

A Hypro 80 micron mesh inline strainer is fitted to the suction line between the tanks
and the pump inlet.
NOTICE: 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 hours run are monitored on the engine control panel.