5
EXPLODED VIEW DRAWINGS
PUMP ASSEMBLY
BYPASS - UPPER HOUSING
ITEM
1
2
3
4
5
6
7
ITEM
1
2
3
4
DESCRIPTION
Screws (6)
Upper Housing with switch
Check Valve Assembly with O-Ring
Lower Housing Assembly
Motor Adapter Assembly
Motor Assembly
Mounting Feet (4)
DESCRIPTION
Upper Housing Viton SW60
Stainless Steel Spring
Pulsation Dampener
Diaphragm
1
2
3
4
5
DISASSEMBLE
Pump Housing
1. Disconnect power to the pump motor.
2. Remove the pressure switch cover (not shown) and remove the
two wire leads from the switch spade connectors.
3. Remove the six screws (1) from the upper housing (2).
4. Remove the upper housing from the check valve and dia-
phragm/lower housing assemblies (3 & 4).
Check Valve Assembly (3)
(To replace check valve only follow steps 1 through 6)
5. The check valve housing and o-ring (3) are located on the dia-
phragm/lower housing assembly (4).
6. Remove the check valve (3) from the diaphragm/lower housing
subassembly (4) (pull valve body from the diaphragm).
Diaphragm/Cam/Lower Housing Assembly (4)
7. Remove the diaphragm/lower housing assembly (4) from the
motor adapter assembly (5).
Motor Replacement (6)
8. To replace the motor only, follow steps 1 through 7.
9. Remove the motor adapter assembly (5) from the old motor (it
may require a 3 mm Allen wrench).
10. Remove the four alien head screws from the motor adapter and
remove the adapter and o-ring.
REASSEMBLE
Pressure Switch Assembly (not shown)
1. Install the switch diaphragm into upper housing. Note: Check
the old diaphragm for the material mark located in the center
of the new diaphragms. V is for VITON, B is for BUNA, and E is for
EPDM. Select the correct material for the installation.
2. Install the switch body over the diaphragm, align the screw
holes and install the two mounting screws.
3. Reinstall the two wires onto the spade connectors, then install
the switch cover and screw.
Check Valve Assembly (3)
4. Install the o-ring into the o-ring groove located on the dis-
charge side of the check valve chamber assembly (3).
5. Install the check valve chamber assembly into the diaphragm
(4), thus aligning the check valve body with the diaphragm seal
walls (push in to secure to the diaphragm).
Upper Housing Assembly (2)
6. With the check valve assembly installed on the diaphragm,
place the upper housing assembly onto the pre-assemble lower
housing diaphragm/cam assembly (4).
7. Align the cam with the motor “D” shaft, then slide the cam and
pump head assembly onto the motor shaft (6) (lube the motor
shaft with a small amount of light grease).
8. Check the discharge location (see arrow on front of port) for cor-
rect port orientation (discharge right is the standard position).
9. Install the six pump head screws (1) through the upper housing
and through the lower housing into the front end bell assembly
(2, 4 & 5) aligning the three pins on the motor adapter with
the upper housing and tighten securely (torque to 25 inch-
pounds).
Motor Assembly
10. Install the o-ring into the motor adapter assembly (5).
11. Install the motor adapter assembly onto the new motor by
aligning the adapter with the motor housing and screw bosses.
12. Install the four (3 mm) Allen screws through the adapter and
into the motor and secure (5 & 6). (Apply a thin layer of screw
Loctite 271 to secure these screws.)
13. Install the pump head by following steps 6 through 9.
14. AC Motors do not have a separate Motor Adapter.
