Pentair Wellmate classic Guide

FILTRATION & PROCESS AIR CELL REPLACEMENT INSTRUCTIONS

WELLMATE®CLASSIC & CLASSIC QUICK CONNECT

AIR CELL REPLACEMENT INSTRUCTIONS

KIT INCLUDES

MAY ALSO REQUIRE

Qty. Description

1 O-ring Lubricant Packet

1 Drain Assembly O-ring

(for black drain) CH2694-114

1 Drain Assembly O-ring

(for grey drain) 2694-112

2 Drain Assembly “C” Clips

(for back drain) CH20514

1 Replacement Air Cell

1 String Kit

1 Nylon String

1 Brass Valve Stem Connector

1 Valve Stem Nut

1 Valve Stem Washer

1 White Spacer

1 Valve Stem Cap

1 “H” Clip for Service Connection Fitting

(for black drain)

1 O-ring for Service Connection Fitting

(for black drain) 40951

Valve Core Tool

3/4” Diameter x 18” Long Wooden Dowel

Hacksaw

Channel Lock Pliers

Air Source

1/2” Deep Well Socket

LUBRICANT

Lubricant Packet CH13279

(for both classic & classic QC)

H-Clip 40876

(for black drain)

Air Stem Cap CH4630-1

(for both classic & classic QC) String Kit

(for both classic & classic QC)

C-Clip (x2) CH20514

(for black drain)

O-ring 2694-112

(for grey drain)

O-ring 40951

(for black drain)

O-ring CH2694-114

(for black drain)

NOTES

If replacing rubber air cell, drain with tether hole is required. See figure 3. If incorrect drain is

used, the tank will not function properly.

If tank has black (rubber) air cell, natural colored air cell is a direct replacement.

TO REMOVE OLD AIR CELL

1. Turn off electric power to the pump at the control box or main switch.

2. Drain water from the tank by opening faucet closest to the tank. Allow all

water to escape and leave faucet open after water stops running.

WARNING: Make sure all the pressure has been released from the tank

and system.

3. Remove valve core from the air valve at the top of the tank. Ensure that no

compressed air remains in the tank.

4. Using a 1/2” deep well socket, remove metal nut and washer from the air

valve.

NOTE: The valve stem at this time should pull into the tank.

If it does not, all of the pressure may not have been released.

5. For tanks with black drain - Disconnect the tank from the water supply line.

a. Push service connection fitting in towards tank to relieve pressure on

red clip (Figure 3B). Pull red clip from end of drain pipe (Figure 3A).

b. Remove service connection fitting from end of drain pipe (Figure 3C).

6. Carefully lay the tank on its side (protect sides of tank). Do not drop.

7. Remove drain assembly and base from tank.

a. Push drain fitting into the tank to relieve pressure on the large red

clips.

b. Using a flathead screwdriver, pry (2) red clips that retain drain

assembly in tank (Figure 3D).

c. Pull drain assembly straight out of the bottom of the tank.

8. Remove old O-ring from drain assembly (Figure 3E). Replace with O-ring

from kit and completely cover O-ring with lubricant.

9. Remove old air cell from tank through the bottom opening. Two people are

recommended when removing air cell. One person should secure the tank

while the other firmly pulls and works the air cell from side to side.

INSTALLATION OF NEW AIR CELL

1. With drain assembly removed from tank, stand tank upright on base with

drain connection on the bottom. Tank is unstable on base without drain

connected. Therefore it is recommended that one person hold the tank

while another continues with the next two steps.

2. Remove nylon line from kit. Separate steel nut and washer from nylon line

leaving brass stem connector attached. Feed brass valve stem connector

through the steel nut and washer. Feed through the nut first. Flat sides of

nut and washer should be facing the valve stem during assembly.

3. Drop valve stem connector through valve stem hole at top of tank. The steel

nut and washer should be tied together at the other end of the line. Feed

nylon line through the hole until steel nut and steel washer are against the

tank and suspending line from top of tank. Carefully lay tank on its side.

Valve stem connector should be easily accessible at the bottom of the tank.

4. Attach valve stem connector to valve stem on top of new air cell. This is

accomplished by screwing connector into the inside thread on valve stem.

NOTE: To avoid damage to valve core, do not screw connector too far into

stem.

5. To install replacement aircell, two people are recommended. With the aid

of the nylon line, one person should guide the valve stem through the valve

stem hole while the other person pushes the air cell through the drain

opening.

NOTE: Nylon line should only be used to guide the stem and not to pull the

air cell into the tank.

6. Attach metal washer and nut to valve stem. Hand tighten nut at this time so

that air cell is able to spin freely in the tank. Remove valve stem connector.

7. Place bottom drain pipe through the hole in the base.

8. Insert barb on the bottom of the air cell through the hole in the drain

screen.

9. Lubricate the O-ring on the drain assembly with silicone grease. Check that

the O-ring is in place.

FILTRATION & PROCESS AIR CELL REPLACEMENT INSTRUCTIONS

Valve Stem Cap

Dust Cap

Metal Nut

Metal Washer

Tank

Air Cell*

Securing Pin Hole

Base

Barb

(goes through hole on

drain screen)

Bottom Drain Assembly

Classic

Classic QC

Figure 1

Rubber Washer

Gray/White/Brass Retainer

Valve Stem

Figure 2

FOR TANK WITH GREY DRAIN ASSEMBLY

10. Thread grey drain into bottom of tank.

11. Connect all plumbing lines.

FILTRATION & PROCESS AIR CELL REPLACEMENT INSTRUCTIONS

Figure 3 - Drain Assembly

FOR TANK WITH BLACK DRAIN ASSEMBLY

10. Press the drain fitting into the bottom of the tank until it is

fully seated.

11. Install (2) large red C-clips into drain. The clips should snap

easily into place and should not be forced.

12. Press black threaded plumbing connection into the open end

of the drain. Press until fully seated.

13. Install (1) smaller red H-clip, securing the plumbing

connection to the drain.

14. Connect all plumbing lines.

Tether hole

for air cell

FILTRATION & PROCESS

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