Munsch NPC Series - Loosening Connectors (if Available); Extracting the Volute Casing; Disassembling the Impeller; Connectors REA-C;D

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Maintenance

7.3.3 Loosening connectors (if av ailable)

Flushing connector or supply connectors REA -C/D

718

710.2/.3

412.70/.8

925

710.1

412.70/.8

Fig. 17 Loosening the ﬂushing connector or supply

connectors REA-C/D

1. Loosen lock nut 925.

2. Screw in socket 718 clockwise with a few turns.

3. Loosen and unscrew pipes Skt12 710.1/.2/.3.

4. Unscrew socket 718.

5. Remove O-rings 412.70/.8 from pipes 710.1/.2/.3.

Connector for spring chamber ﬂushing

Loosen and unscrew ﬁttings 738.

7.3.4 Extracting the volute casing

102

155+

Fig. 18 Extracting the volute casing

1. Loosen the casing nuts.

2. Loosen and extract casing armour plating 155 and volute

casing 102 by screw ing in the two ejector screw s.

7.3.5 Disassembling the impeller

230

412.74

906

412.4

938

Fig. 19 Disassembling the impeller

1. Loosen and remove impeller screw 906 and O-ring 412.4

using circlip pliers.

2. Unscrew socket head cap screw with SCHNORR spring

washer 938.

3. Extract impeller 230.

4. Remove O-ring 412.74 from impeller.

EN – 02 BA-2005.07 NPC series 27