Pentair EQ SERIES important safety instructions Mechanical Installation, cont.’d

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Mechanical Installation, cont.’d.

6. Assemble the strainer pot assembly, if

included, to the pump. Be sure to install the

O-Ring (included with the strainer pot

assembly) over the protruding plastic ring

on the front of the pump housing before

mounting the strainer pot. Properly position

the strainer pot to the housing and secure in

place using the 8 large flange bolts and

washers included with the strainer pot

assembly. These bolts should not be over

tightened as this could damage the pump.

Proper technique is to lightly snug each bolt

with a wrench. A squealing sound during

Figure 1.

P/N 356766 *

P/N 356789 *

P/N 356788 *

HEX NUT 5/8-11

5/8" ID X 1-5/16" MIN OD FLAT WASHER

* INCLUDED WITH STRAINER POT

70 DURO NITRILE OR EPDM 1/8" THICK GASKET

5/8" ID X 1-5/16" MIN OD FLAT WASHER

HEX HEAD CAP SCREW 5/8-11 X 3-1/4" LG

6" ANSI CLASS 150 FLANGE

SUCTION CONNECTION WITH

STRAINER POT

	tighteningoftheboltsindicatesthatthebolts
	are being excessively tightened.
7.	Placethepumpinitsfinallocationandensure
	that the mating flanges of the suction and
	dischargepipingareinlineandparalleltothe
	flanges on the pump. Resolve any problems
	withmisalignmentbeforeboltingtheflanges
	to the pump.
8.	The pump may be secured to bolts buried in

Figure 2.

70 DURO NITRILE OR EPDM 1/8" THICK GASKET

5/8" ID X 1-5/16" MIN OD FLAT WASHER

HEX HEAD CAP SCREW 5/8-11 X 2-1/4" LG

SUCTION CONNECTION WITHOUT

the concrete by using the holes on the

outside of the motor supports.

STRAINER POT

6" ANSI CLASS 150 FLANGE

9.Ensure that the flange gasket is properly positioned between the suction flange of the pump and the flange of the suction piping. Use only high quality rubber, full diameter flange gaskets with holes for the bolts to pass through. It may be necessary to hold the gasket in place with either silicone or two or three drops of a cyanoacrylate (super glue) material. Do not use any other grease or glue as they may contain chemicals that could attack the plastic material. Install the flange bolts hand tight on the suction side of the pump.

CAUTION — On installations where the pump is installed without a strainer pot, use only 6 in. Schedule 40 PVC pipe when making the final flange connection. Do NOT use Schedule 80 Pipe, as this can cause interference with the pump housing.

CAUTION — Use large diameter flat washers between the hex nut and the pump flanges to properly distribute the clamping forces on the flange. Tighten the flanges to 20 ft.-lb. unless otherwise specified by the flange manufacturer. If it is not possible to use a torque wrench then care should be taken not to over tighten the flange bolts. Failure to follow the above instructions can result in damaging the pump flange.

10.Properly insert the flange gasket on the discharge port of the pump. Install the flange bolts hand tight on the discharge flange connection.

11.Inspect both the suction and flange connection to ensure alignment remains acceptable. Take any corrective action before tightening the flange bolts to the required torque.

CAUTION — Suction and discharge piping must be supported by an appropriate system of supports or hangers. Inadequately supported pipe can cause excessive loads to be transmitted to the pump resulting in a structural failure of the pump that could result in flooding and property damage.

EQ Series Pump Installation and User’s Guide