VR1 datasheet(2/8 Pages) PENTAIR

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USAGE

The VR1 Series is a submersible wastewater grinder

pump designed specifically for individual residential

applications. The pumps are to be used for domestic

sewage only and are not to be used for pumping

commercial or industrial sewage such as from motels,

schools, apartments, factories, etc.

THIS PUMP IS

NOT FOR USE IN HAZARDOUS LOCATIONS!

INSPECTING PUMP

Before making any piping or electrical connections,

check the pump for shipping damage or cracks. Insert

allen key into cutter retaining bolt and turn clockwise

to ensure cutters and impellers do not rub. Do not

turn cutter with fingers.

POWER SUPPLY

The VR1 Series grinder pump should be connected to

a 115 or 230 volt, single-phase, 60 Hz power source.

The pump will draw approximately 7.4, 5.3 amperes

at minimum flow and 12.5, 7.6 full load amperes.

The pump must be connected to a grounded power

socket.

DO NOT cut off the ground pin from the

power cord plug.

POWER CORD

A 20 foot power cord is attached to the grinder pump

via two insulated quick-disconnect terminals and a

ground terminal. To replace a cord, begin by slightly

loosening cord nut in the cord cap plate. Remove

cord cap plate from the motor housing and carefully

pull the power leads up out of the motor housing and

disconnect them from the motor leads. Disconnect

the ground wire from the cap plate and continue to

completely loosen the cord nut from the cap.

To install new cord, feed terminals through cord cap

plate and reconnect power terminals. Reconnect

ground terminal to the bottom side of the cap plate.

Carefully feed wires back into the motor housing and

fasten the cord cap plate to the motor housing. Lastly,

tighten the cord nut into the cap plate. Tighten firm,

do not overtighten.

The power cord should be replaced if it has

been damaged in any way or the cord jacket has

become brittle.

MOTOR TYPE

The VR1 Series grinder pump contains a 3/4 frame,

1 hp, single-phase, 60 Hz, 3450 rpm, capacitor start,

capacitor run motor with Class F insulation and built-in,

on-winding overload protection. Motor has upper and

lower ball bearings and is oil-cooled and lubricated.

CAUTION!

THE VR1 SERIES GRINDER PUMP SHOULD

NEVER BE WORKED ON WITHOUT FIRST

DISCONNECTING THE POWER CORD.

OIL TYPE

The motor housing contains dielectric transformer oil

to provide good heat transfer and lubrication of ball

bearings; no other lubrication is required. Oil level may

be checked by removing the oil plug from the top of

the motor housing. The oil level should be filled to

the bottom of the end shield.

Do not overfill with oil.

Only dielectric transformer oil obtained from a Myers®

authorized service center should be used.

PUMP SWITCH INSTALLATION

INSTRUCTIONS

NOTE: In accordance with third party approval, pump

must be submerged a minimum of 8-5/8" from bottom

of the legs on volute case during operation.

Mounting the Switch

1. Determine pumping range for installation. Do not

tether less than 3-1/2" from pipe.

2. Tighten strap around discharge pipe keeping

switch cable between strap and pipe to

prevent slippage.

3. Space small ties at least 1" apart. To readjust ties,

press small tie tabs down.

4. To lock releasable tab, run remaining strap

between tab and head. Tuck strap back

through head.

Piggyback Plug Install

Electrical outlet must not be located in

pump chamber.

Electrical outlet voltage, piggyback plug voltage,

and pump voltage must match.

1. Follow steps 1 through 4 of “Mounting the Switch.”

2. Insert switch’s piggyback plug into outlet.

3. Plug pump into piggyback plug.

4. Check installation. Allow system to cycle to ensure

proper operation.

SAFETY WARNINGS

WARNING! Risk of electrical shock. Pumps are

supplied with a grounding conductor and grounding-

type attachment plug on the power cord. To reduce

the risk of electrical shock, be certain that it is

connected only to properly grounded, grounding-

type receptacle.

DO NOT cut off ground pin or use

an adapter fitting.

DO NOT use an extension cord

VR1 Datasheet(PDF) 2 Page - Pentair plc. All rights reserved.

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