Chassis cleaner
Page 62
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The Prim 6-600 hot water pressure washer developed by Prim Engineering (Stokeon-Trent) has an output of 6gal of water per minute at 85deg C discharged at 600 psi.
Mounted on four castors, the machine is built on an all-welded chassis constructed of heavy gauge square tubular steel. All working parts are totally enclosed in hinged mild steel cowls, so eliminating possible damage due to dirt, water or impact.
The heat exchanger has a water-cooled combustion chamber and is constructed of thick wall carbon steel tube. The burner end of the heat exchanger is protected with a ceramic fibre vacuum moulding and baffle plates are heat-resistant cast iron. The burner unit is of the pressure jet-gun type and has a cast aluminium body. It is powered with a 4hp motor with overload and has a continuous ignition transformer to guard against flame failure. Any type of distillate oil can be used up to 43 Redwood scale such as paraffin, diesel, gas oil, TVO or heating oils. The fuel consumption at a fraction over 2gal per hour is claimed.
The water pump has horizontally opposed pistons and is driven with a 5.5 hp three-phase motor through the medium of triple vee belts and pulleys. A pressure-relief valve is fitted in the discharge line. This also acts as an unloader valve
which. enables the operator to by-pass the water back to the integral water tank by releasing the trigger on the lance gun. A low water cut-off is fitted in the water tank which automatically stops the machine should the water supply from the mains fail for any reason, thus preventing any damage. A soap tank is fitted as an integral part of the machine, the supply being controlled by a metering valve.
All electrical circuits are protected by fuses, and an isolator switch is fitted ensuring the supply to the machine is switched off before the control panel is opened. As a further safeguard the control panel can only be opened with a key, thus preventing unauthorized persons from tampering with the electrics. The main 5.5 hp motor is controlled with a direct on-line starter, while the burner motor is controlled with a toggle switch. Made by: Prim Engineering (Stoke-on-Trent) Ltd, Grafton Works, Park Lane, Fenton, Stokeon-Trent, Staffs.