Graco Inc PRO 4500sc, 308131, 224400, 224200 manual Installing the System, Ventilate the Spray Booth

Installation

Installing the System

WARNING

FIRE, EXPLOSION, AND ELECTRIC SHOCK HAZARD Installing and servicing this equipment requires access to parts which may cause electric shock or other serious injury if work is not performed properly.

DDo not install or service this equip- ment unless you are trained and qualified.

DBe sure your installation complies with National, State and Local codes for the installation of electrical apparatus in a Class I, Group D Hazardous Location.

DComply with all applicable local, state, and national fire, electrical, and other safety regula- tions.

Fig. 1 shows a typical electrostatic air spray system. It is not an actual system design. The particular type and size system for your operation must be custom designed for your needs. For assistance in designing a system, contact your Graco distributor.

Warning Signs

Mount warning signs in the spray area where they can easily be seen and read by all operators. An English Warning Sign is provided with the gun. Additional English, French, German, and Spanish signs are avail- able at no charge. See Accessories to order them.

Ventilate the Spray Booth

WARNING

FLAMMABLE OR TOXIC

VAPOR HAZARD

Provide fresh air ventilation to avoid the buildup of flammable or toxic vapors. Do not operate the gun unless ventilation fans are operating.

Electrically interlock the gun air supply with the ventila- tors to prevent gun operation without ventilating fans operating. Check and follow all National, State, and Local codes regarding air exhaust velocity requirements.

NOTE: High velocity air exhaust will decrease the op- erating efficiency of the electrostatic system. Air ex- haust velocity of 100 ft/min (31 linear meters/minute) should be sufficient.

Connect the Air Line (Refer to Fig. 1)

WARNING

ELECTRIC SHOCK HAZARD

To reduce the risk of electric shock or other serious injury, the air supply hose must be electrically connected to a true

earth ground. Use Only Graco Electrically Con- ductive Air Supply Hose.

1.Connect the Graco Electrically Conductive Air Supply Hose (R) between the air supply line and the gun’s air inlet (V). The gun air inlet fitting has a left hand thread. Connect the air supply hose ground wire to a true earth ground.

2.Install an air line filter (O) and an air and water separator (D) on the air line to ensure a dry, clean air supply to the gun. Dirt and moisture can ruin the appearance of your finished workpiece and can cause the gun to malfunction.

3.Install a bleed-type air regulator (G) on the pump and gun air supply lines to control air pressure to the pump and gun.

4.Install a bleed-type air shutoff valve on the main air line (C) and the pump air line (E) to shut off air to the pump. Install an additional bleed-type valve on each pump air supply line to relieve air trapped between this valve and the pump after the air regulator is shut off.

WARNING

PRESSURIZED EQUIPMENT HAZARD

The bleed-type air shutoff valve is required in your system to relieve air trapped between this valve and the pump after the air regulator is closed. Trapped air can cause the pump to cycle unexpect- edly, which could result in serious injury, including splashing in the eyes or on the skin.

5.Install an air line lubricator (F) as close to the pump (H) as possible.

6.Install an air shutoff valve ( P) on each gun air supply line to shut off air to the gun(s).

308131 7