PT2000 PRESSURE ROLLER SYSTEM DESCRIPTION

SUCTION TUBE

PRIMING TUBE

INLET VALVE

MOTOR

ON/OFF

SWITCH

POWER SUPPLY CORD Add plug according to local code

SPRING GUARD

MUST BE AT

THIS END

ROLLER VALVE

Fig 1

Motor

The motor drives the connecting rod which moves the diaphragm.

Pressure Switch

The pressure switch at the pump outlet turns the motor on and off to control paint pressure.

Diaphragm

The diaphragm is the heart of the pump. Driven by the connecting rod and motor, the movement of the dia- phragm draws paint from the suction tube and through to the outlet valve.

Priming Valve

The priming valve assists in priming the pump during startup. Turning the priming valve counterclockwise causes the paint to drain directly back into the pail through the priming tube. Turning the knob clockwise causes the paint to flow through the fluid outlet valve and to the hose, roller valve and extension.

Outlet Valve

The outlet valve has a ball check which prevents paint from flowing backwards into the pump. This helps keep an even supply of paint to the roller each time you trigger the roller valve.

Inlet Valve

As the diaphragm draws paint from the suction tube the paint passes through the inlet valve which opens to allow paint into the pump.

PRIMING VALVE

PAINT STRAINER

7.6 M (25 FT) HOSE

460 TO 920 MM (18 TO 36 IN.)

TELESCOPING EXTENSION

LOCKNUT

ROLLER FRAME

12 MM (1/2 IN.) NAP ROLLER COVER

Outlet Hose

The hose has swivel±type couplings for easy assembly. A larger diameter outlet hose and chemical-resistant out- let and suction hoses are available. See ACCESSORIES on page 17.

Roller Valve

The roller valve controls paint flow to the roller by trigger- ing it on and off.

Pressure Roller

The pressure roller has a telescoping extension and a roller cover for use on smooth surfaces. Longer exten- sions and different types of roller covers are available. See the ACCESSORIES on page 17.

307±760 3

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Graco Inc 307760, Series E, 221076, 220240 manual PT2000 Pressure Roller System Description