Graco 312877C important safety instructions Air Line, Reed Switch, Air Exhaust Ventilation

Installation

Check your system electrical continuity after the initial installation, and then set up a regular schedule for checking continuity to be sure proper grounding is maintained.

Air Line

See FIG. 3 and FIG. 4, pages 10 and 11.

1.Install an air regulator (C) and gauge to control the fluid pressure. The fluid stall pressure will be the same as the setting of the air regulator.

2.Locate a bleed-type master air valve (B) close to the pump and use it to relieve trapped air. Be sure the valve is easily accessible from the pump and located downstream from the regulator.

Trapped air can cause the pump to cycle unexpectedly, which could result in serious injury from splashing.

3.Locate another master air valve (E) upstream from all air line accessories and use it to isolate them during cleaning and repair.

4.An air line filter (F) removes harmful dirt and moisture from the compressed air supply.

5.Install a grounded, flexible air hose (A) between the accessories and the 1/2 npt(f) pump air inlet (D). Use a minimum 3/8 in. (10 mm) ID air hose.

Remote option: Insert 5/32 OD tubing into the push-to-connect fitting at each pilot and route to your control.

NOTICE

Pilot supply pressure should not exceed main air supply pressure. If pilot supply pressure is too high, the pump could leak air or exhaust excessive air at stall.

Reed Switch

Pulse Count models are intended for use with customer-supplied fluid management or inven- tory tracking systems. Attach an M12, 5-pin female cable to connect the reed switch to your data monitoring system. See Manual 406824.

Air Exhaust Ventilation

The air exhaust port is 3/4 npt(f). Do not restrict the air exhaust port. Excessive exhaust restriction can cause erratic pump operation.

To provide a remote exhaust:

1.Remove the muffler (T) from the pump air exhaust port.

2.Install a grounded air exhaust hose (U) and connect the muffler (T) to the other end of the hose. The minimum size for the air exhaust hose is 3/4 in. (19 mm) ID. If a hose longer than 15 ft (4.57 m) is required, use a larger diameter hose. Avoid sharp bends or kinks in the hose.

3.Place a container at the end of the air exhaust line to catch fluid in case a dia- phragm ruptures. If the diaphragm rup- tures, the fluid being pumped will exhaust with the air.

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