Drainage/Cleaning; Dismantling The Pump Set - Speck pumpen Normblock Installation & Operating Manual

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7 Servicing/Maintenance
Table 14: Clearances between impeller and casing or between impeller and casing
cover
Impeller material
Grey cast iron (EN-GJL-250/A48 CL 35B)
Bronze (CC480K-GS/B30 C90700)
Stainless steel (1.4408/ A743 GR CF8M)
7.2.2.2 Cleaning filters
CAUTION
Insufficient inlet pressure due to clogged filter in the suction line
Damage to the pump!
▷ Monitor contamination of filter with suitable means (e.g. differential pressure
gauge).
▷ Clean filter at appropriate intervals.

7.3 Drainage/cleaning

WARNING
Fluids, consumables and supplies which are hot and/or pose a health hazard
Hazard to persons and the environment!
▷ Collect and properly dispose of flushing fluid and any residues of the fluid
handled.
▷ Wear safety clothing and a protective mask, if required.
▷ Observe all legal regulations on the disposal of fluids posing a health hazard.
1. Use connection E to drain the fluid handled. (⇨ Section 9.1.1 Page 49) (⇨ Section
9.1.2 Page 51)
2. Always flush the system if it has been used for handling noxious, explosive, hot
or other hazardous fluids.
Always flush and clean the pump before transporting it to the workshop.
Provide a certificate of decontamination for the pump. (⇨ Section 11 Page 56)

7.4 Dismantling the pump set

7.4.1 General information/Safety regulations
DANGER
Insufficient preparation of work on the pump (set)
Risk of injury!
▷ Properly shut down the pump set. (⇨ Section 6.1.5 Page 31)
▷ Close the shut-off elements in suction and discharge line.
▷ Drain the pump and release the pump pressure.
▷ Close any auxiliary connections.
▷ Allow the pump set to cool down to ambient temperature.
Normblock
Permissible clearance
New Max.
0,3 mm 0,9 mm
0,5 mm 1,5 mm