Graco 308652Y Installation, Tightening Threaded Fasteners Before First Use, Grounding

Installation

Tightening Threaded Fasteners Before First Use

Before using the pump for the first time, check and retorque all external fasteners. See Torque Se- quence, page 18. After the first day of operation, retorque the fasteners. Although pump use varies, a general guideline is to retorque fasteners every two months.

Use a compatible thread sealant on all male threads. Tighten all connections firmly to avoid air or fluid leaks.

CAUTION

To avoid pump damage, do not overtighten the fittings to the pump.

Grounding

WARNING

FIRE AND EXPLOSION HAZARD

This pump must be grounded. Before you operate the pump, ground the system as explained below. Also read the section FIRE AND EXPLOSION HAZARD on page 3.

The acetal pump contains stainless steel fibers which make the wetted parts conductive. Attaching the ground wire to one of the grounding locations grounds the wetted parts.

The polypropylene and PVDF pumps are not conductive. When you pump conductive flam- mable fluids, always ground the entire fluid system by making sure the fluid has an electrical path to a true earth ground. See Fig. 1. Never use a poly- propylene or PVDF pump with non-conductive flammable fluids as specified by your local fire protection code. Consult your fluid supplier to determine the conductivity or resistivity of your fluid.

US Code (NFPA 77 Static Electricity) recommends a conductivity greater than 50 x 10–12Siemans/me- ter (mhos/meter) over your operating temperature range to reduce the hazard of fire. Consult your fluid supplier to determine the conductivity or resistivity of your fluid. The resistivity must be less than 2 x 1012 ohm-centimeters.

4 308652

To reduce the risk of static sparking, ground the pump and all other equipment used or located in the pumping area. Check your local electrical code for detailed grounding instructions for your area and type of equip- ment.

Acetal Pump Grounding Instructions

For polypropylene and PVDF pumps, see the warning above.

Ground all of this equipment.

Pump: Connect a ground wire (A) and clamp, Part No. 222011. See Fig. 1. The pump grounding locations are on the manifold between the inlet and outlet ports. Use the nut (B) and bolt (C) that are provided with the pump, and install as follows:

1.Place the nut in the nut catcher on the underside of the manifold.

2.Insert the bolt through the loop end of the ground wire.

3.Insert the bolt through the hole on the pump man- ifold and tighten it into the nut that you positioned in step 1.

4.Connect the clamp end of the ground wire to a true earth ground.

B

grounding hole

	C
	A
Fig. 1	06179A

DAir and fluid hoses: Use only grounded hoses with a maximum of 500 ft (150 m) combined hose length to ensure grounding continuity.

DAir compressor: Follow the manufacturer’s recom- mendations.

DAll solvent pails used when flushing: Follow the local code. Use only grounded metal pails, which are conductive. Do not place the pail on a non-con- ductive surface, such as paper or cardboard, which interrupts the grounding continuity.

DFluid supply container: Follow the local code.