Service Tools; Dismantling The Pump - Grundfos TPE2 Service Instructions Manual

6. Service tools

A
D
G
J
Pos. Designation For pos.
A Screwdriver 7a
Terminal
B Screwdriver
23-26
C Screwdriver 534a
28
Ratchet
D+E spanner with 67
socket
92
18, 215
F+G Torque wrench
Ring/open-end
H 100
spanner
I Mounting bush 105
J Punch 105
K Punch 45
L Strap wrench 49
B C
E F
H I
K L
Further information
PH2
Straight slot, 2.5 mm
Torx 25
9 2 mm hexagon socket
14 mm
13 mm
5 mm hexagon socket
6 mm hexagon socket
- 0-50 Nm
24 mm
98467480
98467479
DN 32: 98699493
DN 40: 98699494
DN 50: 98699480
DN 65: 98699491
DN 80:
98699492
DN 100:

7. Dismantling the pump

Warning
Switch off the power supply and make sure that it
cannot be accidentally switched on.
Check that other pumps or sources do not force flow
through the pump even if the pump is stopped. This
will cause the motor to act like a generator, resulting
in voltage on the pump.
Warning
Close the isolating valves, if fitted, and make sure
that they cannot be accidentally opened.
Warning
Before starting work any on the product, let the
product and pumped liquid cool off.
1. TPE3, TPE3 D: Detach the sensor as described in section 9.
Replacing the sensor with cable.
2. Apply lubricant e.g. Rocol Sapphire Aqua-Sil on the screw for
the clamp (92) and loosen the screw.
3. Lift the pump head out of the pump housing (6).
4. Remove the clamp (92).
5. Remove the O-ring (301a).
6. Remove the neck ring (45) and dispose of it. See fig. 3.
Removal and disposal of the neck ring
Fig. 3
7. Hold the impeller (49) with a strap wrench and loosen the
impeller nut (67). Remove the impeller nut, washer (66a) and
impeller (49) from the shaft.
8. Remove the spacer ring (100) and the rotating shaft seal part
(105).
9. Loosen the two pozidriv screws (7a) and remove the coupling
guard (7).
10. Loosen the four nuts (28) and remove the motor stool (77).
11. Remove the stationary shaft seal part (105) from the motor
stool (77).
12. Loosen the two set screws (9) and remove the shaft (51).
13. Remove the key (11b) from the shaft (51).
5