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TECHNICAL DESCRIPTION
PLANTMASTER ELECTRIC
The MAC Plantmaster Electric, electrically heated static, hot water, pressure washer is designed to deliver
up to 13 litres of hot water per minute at a pressure of up to 170 bar through a hose, gun and lance
assembly onto an object requiring cleaning. The temperature of the hot water has a maximum of 80 C
dependent on the usage of the machine. The machine is designed to deliver a detergent with the water,
when required, to assist in the cleaning process.
The working parts of the pressure washer are contained within a powder coated mild steel cabinet. The
cabinet dimensions are detailed within the Technical Data. The cabinets have a hinged detachable front
panel and top cover for access. The front panel is lockable from the outside and the top cover is bolted
down internally. The model weight is detailed in the Technical Data.
The cabinet is lined internally with insulation and hot water tank is lined externally with insulation.
Within the cabinet, the machine components are fitted into a framework. The water tank occupies the
full bottom half of the framework and the upper rear half of the framework. The heating elements are
fitted into the bottom half of the water tank and at the front to allow for easy access. The water pump
and electric motor assembly are mounted on rails in the front centre, and to the right-hand side, of the
framework. The electric box is located above the pump motor assembly, in the upper right-hand side of
the framework and secured to the framework. The control panel is located on the right-hand side of the
cabinet and accessed externally.
WATER PUMP
The water pump has a brass-headed 3-piston assembly and is connected directly to the motor via a drive
coupling and bell housing assembly.
SAFETY DEVICE
The machine is fitted with an unloader valve – used to set the maximum pressure the pressure washer
will operate at. This is pre-set but can be adjusted by a qualified engineer.
WATER TANK
The water tank is fitted with a low water level switch and float valve assembly.
CONTROL PANEL
The control panel consists of switches and controls as follows:
Power ON/OFF Switch
Power on Warning Light (Green)
Heating elements ON/OFF Switch
Heating element warning light (Orange)
Low water warning light (Red)
Water temperature digital readout display
OPTIONAL EXTRAS
Stainless steel cabinet
Frost protection
High pressure chemical
