Disassembly And Assembly; Disassembling The Pump - Grundfos NBS Service Instructions Manual

4. Disassembly and assembly

WARNING
Overhead load
Death or serious personal injury
‐
Pay attention to the pump weight, and take precau-
tions to prevent personal injury if the pump topples or
falls by accident.
CAUTION
Crushing of feet
Minor or moderate personal injury
‐
Do not drop pump components when servicing the
product.
Check also the following service videos in association with this task:
How to dismantle and assemble Grundfos NBS
single-stage pump
How to replace low pressure shaft seal on Grund-
fos NBS single-stage pump

4.1 Disassembling the pump

1. Remove coupling guard.
2. Remove fork tool to access the split coupling.
3. Loosen coupling screws.
4. Remove split coupling pieces.
5. Loosen set screws which fixate motor and pump keys.
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