Polaris PB4SQ Replacement Instructions Manual
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Polaris PB4SQ Replacement Instructions Manual

Booster pump
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Table of Contents

3,4
ITEM
Part
1
R0722900
2
R0734500
3
R0734200
4
R0722600
5
R0723000
6
R0722700
7
R0747800
8
R0723200
9
R0734300
10
R0723100
11
R0722800
12
R0734400
13
R0617100
14
R0621000
15
P19
WARNING
FOR YOUR SAFETY - This product must be
installed and serviced by a contractor who is
licensed and qualifi ed in pool equipment by the
jurisdiction in which the product will be installed,
where such state or local requirements exist. In
the event no such state or local requirement
exists, the individual in charge of maintenance
must be a professional with suffi cient experience
in pool equipment installation and maintenance,
so that all of the instructions in this manual can
be followed exactly. Improper installation and/or
PB4SQ
1,3
2,3
1,3
(4 ea)
3,4
3,4,5
7,8,9
8,9,10
8

Replacement Parts List

Description
Capacitor Housing Cover
Capacitor 30mfd 400VAC
Motor Assembly, 725 WATT
Fan Cover Kit
Motor Fan
Base
Mechanical Seal Assembly
Back Plate Replacement Kit
Seal Replacement Kit
Pump Housing Kit
Impeller and Diffuser Kit
Hardware Kit
Quick Connect Install Kit
Quick Connect 4 Pack
Reinforced Hose 6 ft.
™
PB4SQ™ Booster Pump
Replacement Kit Instructions
13,15
3,4
6
12
11
11
operation can create dangerous electrical
hazards, which can cause high voltages to run
through the electrical system. Before installing
this product, read and follow all warning notices
and instructions that accompany this product.
Failure to follow warning notices and instructions
may result in property damage, personal injury,
or death. Improper installation and/or operation
will void the warranty.
If these instructions are not followed exactly, a
fi re or explosion may result, causing property
damage, personal injury, or death.
13, 14
(4 ea)
12
(4 ea)
9,10
10
8,9,10
SECTION
PAGE
4
5,8,10
4
5
6
10
5
6,7
5
6
5
7
6
10
6
10
6
8, 11
6
8, 11
6
9, 11
6
8, 9, 11
7
11
7
11
7
11

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Questions and answers

Samuel Gilbert Powers
March 28, 2025

how does one keep a new first stage orange o ring from popping off after installation

0
1 comments:
Mr. Anderson
March 28, 2025

To prevent the first stage orange O-ring on a Polaris PB4SQ from popping off after installation:

- Make sure the O-ring is installed on the impeller/diffuser stage closest to the pump inlet.
- Ensure the O-ring is seated properly and visibly before assembling the pump housing.
- Inspect the O-ring for damage and replace if necessary.
- Use a small amount of silicone lubricant to help the O-ring seat properly and stay in place.

This answer is automatically generated

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Summary of Contents for Polaris PB4SQ

  • Page 1: Replacement Parts List

    ™ PB4SQ PB4SQ™ Booster Pump Replacement Kit Instructions 13,15 13, 14 (4 ea) (4 ea) (4 ea) 3,4,5 9,10 8,9,10 7,8,9 8,9,10 Replacement Parts List ITEM Part Description SECTION PAGE R0722900 Capacitor Housing Cover 5,8,10 R0734500 Capacitor 30mfd 400VAC R0734200...
  • Page 2 Polaris pumps are powered by a high voltage electric motor and must be • Trapped air in system can cause the installed by a licensed or certified...

  • Page 3: Section 1. Using This Guide

    Page 3 Replacement Kit Instructions Section 1. USinG tHiS GUiDe The following guide describes pump disassembly and replacement of key components. The table on the cover displays the page and section numbers for the kit you are installing. Please be sure to read all steps in the section.

  • Page 4: Section 3. Contents

    ® Section 3. contentS Please ensure that you have all the parts included on this list for your replacement Kit. If any parts are missing or damaged please contact Polaris Technical support at 1-800-822-7933 or visit www.polarispool.com. ITEM Part# Description...

  • Page 5: Section 4. Capacitor Box Kits

    (R0734500) • Check rating on the new capacitor to confirm that it is the proper size for the PB4SQ motor capacitor should be rated at 30 mfd, 400VAC. • Install the 2 red flag terminals on the capacitor posts. The capacitor is non-polarized, the terminals can be installed on either post.

  • Page 6: Section 5. Motor Components

    Page 6 Polaris PB4SQ™ Booster Pump ® Section 5. MotoR coMPonentS an equipment failure or a loose plumbing WARNING fi tting the equipment not be in the same area as the pool pump, fi lter, and other equipment. To avoid the risk of property damage, severe...

  • Page 7: Section 6. Base

    Page 7 Replacement Kit Instructions Using a pair of snap ring pliers, remove the snap ring from the snap ring channel on the motor shaft. • With snap ring removed the fan should slide free from the motor shaft. 3. Install motor fan. (R0722600), (R0723000) •...

  • Page 8: Section 7. Pump Components

    Page 8 Polaris PB4SQ™ Booster Pump ® Section 7. PUMP coMPonentS an equipment failure or a loose plumbing WARNING fi tting the equipment not be in the same area as the pool pump, fi lter, and other equipment. To avoid the risk of property damage, severe...
  • Page 9 Page 9 Replacement Kit Instructions • Allow all water to drain from the pump in a suitable location before proceeding. NOTE: A small amount of water may remain captured inside the impeller stack. 2. Remove the pump wet end. (R0723100), (R0734400) If possible set the pump vertically on an appropriate work surface.
  • Page 10 Page 10 Polaris PB4SQ™ Booster Pump ® 4. Remove pump housing O-ring. (R0723100), (R0734300) Remove and inspect the pump housing O-ring from the back plate. • Damaged or worn O-Rings need to be replaced before returning the pump to normal operation.

  • Page 11: Section 8. Plumbing Connections

    Page 11 Replacement Kit Instructions 8. Install impeller/diffuser stage stack. (R0722800), (R0734400) • Inspect each stage for degradation or damage. Replace any that are not in optimal condition. • The first stage O-ring can be installed on any impeller/diffuser stage. However, care must be taken to ensure that the O-ring is installed on the stage closest to the inlet of the pump.
  • Page 12 2. Install quick connect PTFE (Teflon ) Tape ™ fittings and flexible hose. (R0617100), (R0621000), (P19) • Apply four (4) to six (6) wraps of PTFE (Teflon ® tape to the tapered thread of the connector barb. Be sure to wrap the tape around the threads in Pump Inlet the OPPOSITE direction...

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