TapFlo CTM Series, Instructions For Installation, Operation And Maintenance, Page: 8 / 13

14 Instruction manual CTM mag drive pumps
IOM manual Tapflo PE & PTFE series pumps 15
3. MAINTENANCE
3.3.2 Wear Parts Replacement
The components that can affect the correct operation of the pump if not regularly replaced, are:
CTM 20-7
- Casing O-ring (18)
- Rotating bushes (1511) + (1512)
- Static bushes (1521) + (1522)
- O-rings (1821) + (1812) + (1822)
CTM 25-8 and 25-10
- Casing O-ring (18)
- Rotating bushes (1511) + (1512)
- Static bushes (1521) + (1522)
- O-rings (1811) + (1821) + (1812) + (1822)
3.4 Assembly
To re-assemble all the wet-end parts and the external magnet proceed in the reverse
sequence.
3.4.1 Screws recommended locking torque
Part No Pump / Description Thread Locking torque (Nm)
141/143 CTM 20-7 / Screws and nuts M5 6
111 CTM 20-7 / Screws M5 6
141/143 CTM 25-8 / Screws and nuts M6 9
111 CTM 25-8 / Screws M5 6
141/143 CTM 25-10 / Screws and nuts M6 9
111 CTM 25-10 / Screws M6 9
4. SPARE PARTS
CTM 25-8
CTM 25-10
CTM 20-7
4.1 Spare part drawing CTM pumps
4.2 Spare part list CTM pumps
Pos Description Pump model / qty Material
20-7 25-8 25-10
11 Lantern 1 1 1 PP-GF (30%)
111 Motor mounting screw 4 4 4 AISI 304
12 Isolation shell (rear casing) 1 1 1 PP-GF (30%)
PVDF
13 Pump casing 1 1 1 PP-GF (30%)
PVDF
141 Casing mounting screw 6 6 6 AISI 304
142 Casing mounting washer 6 6 6 AISI 304
143 Casing mounting nut 6 6 6 AISI 304
1511 Rotating bushing front 1 1 1 PTFE-graphite
SiC
1512 Rotating bushing rear 1 1 1 PTFE-graphite
SiC
1521 Static bushing front 1 1 1 Al
2
O
3
(ceramic)
SiC
1522 Static bushing rear 1 1 1 Al
2
O
3
(ceramic)
SiC
16 External magnet assembly 1 1 1 Cast iron/NdFeB
161 Lock screw 2 2 2 AISI 304
18 Casing O-ring 1 1 1 EPDM
FKM
1811 O-ring - 1 1 EPDM
FKM
1812 O-ring 1 1 1 EPDM
FKM
1821 O-ring 1 1 1 EPDM
FKM
1822 O-ring 1 1 1 EPDM
FKM
90 Impeller magnet assembly 1 1 1 PP/NdFeB
PVDF/NdFeB