TapFlo CTV 40-13.5, Instruction Manual, Page: 13 / 24

Instruction manual CTV vertical pumps 13
3. MAINTENANCE
3.3.2 Dismantling PP & PVDF pumps
- After removal of eventual suction extension or strainer, place the pump horizontally on a
bench.
- Unscrew counterclockwise the lock ring (132) by inserting suitable tool in the holes.
- Remove the pump cover (131), if necessary screw a plastic nipple into the pump cover and
then pull.
- Remove the motor fan cover from the electric motor and then remove the motor fan.
- Secure the free end of the motor shaft by means of a universal pliers or similar.
- Insert two screw drivers cross wise into the impeller opening (9...) and unscrew the impeller
(9...) counterclockwise.
- Remove the impeller o-ring (193) from the impeller.
- Unscrew the motor mounting screws and washers (121 and 122) and carefully pull the pump
casing unit (13) from the motor/shaft assembly.
- Pull the shaft sleeve (162) from the motor shaft and then pull off the lip seal (161).
- Carefully hammer out the shaft bushing (15) from its seat by means of a soft driver (plastic).
Remove the o-ring (151) from the shaft bushing.
- Loosen the hose clip (20) and remove the stabilizer from the discharge pipe.
3.3.3 Dismantling stainless steel pumps
- After removal of eventual suction extension or strainer, place the pump horizontally on a
bench.
- Unscrew the casing mounting screws with washers (141 and 142) and lift carefully off the pump
cover together with elbow and discharge pipe (13, 17 and 12).
- Secure the impeller by putting a screwdriver through the open impeller blades, unscrew the
impeller nut and washer (191 and 192), lift off the impeller (9...).
- Unscrew the shaft bushing (15) from the pump casing unit (11).
- Unscrew the motor mounting screws and washers (121 and 122) and carefully pull the pump
casing unit (13) from the motor/shaft assembly.
- Remove the motor fan cover from the electric motor and then remove the motor fan.
- Secure the free end of the motor shaft by means of a universal pliers or similar. Unscrew the
shaft sleeve (162) from the motor shaft and then pull off the lip seal (161).
3.3.4 Parts inspection
After the dismantling, check all parts for wear or damage and replace if necessary. O-rings are
always recommended to replace after dismantling.
3.3.5 Assembly of the pump - PP, PVDF and stainless steel pumps
Assemble the pump in reverse order to dismantling. When mounting the pump casing unit (11) to
the motor, make sure the shaft rotates concentrically in the casing unit.
Install and startup the pump according to instructions in chapter 2.