Grundfos CRN Series Service Instructions

English (GB)
15
8. Tighten the screw to 15 Nm.
Fig. 33 Neck ring, neck-ring retainer and chamber positioned
in service tool L.
Fig. 34 Neck ring, neck-ring retainer and inlet part positioned
in service tool L
5.2 Bush (47c) and retaining ring (47d)
5.2.1 Dismantling
1. Place the chamber on a flat surface.
2. Press the bush (47c) and retaining ring (47d) out of the
chamber using service tool K.
Fig. 35 Pressing out the bush (47c) and retaining ring (47d)
with service tool K
5.2.2 Assembly
1. Place the chamber on a level and solid surface with the neck
ring (45) facing downwards.
2. Place the bush (47c) and retaining ring (47c) on service tool
K.
3. With a pressing tool, press the retaining ring (47d) and bush
(47c) home in the chamber by using service tool K.
Fig. 36 Installing the bush (47c) and retaining ring (47d) with
service tool K
TM07 1785 2218TM07 1897 2218
TM07 1786 2218TM07 1787 2218

Grundfos CRN Series Specifications

General

Pump Type	Centrifugal, multistage
Material	Stainless steel (AISI 304 or 316)
Applications	Water supply, pressure boosting, industrial processes
Impeller Material	Stainless steel (AISI 304 or 316)
Connections	Flanged or threaded
Speed	2900 rpm
Temperature Range	-10°C to +120°C
Inlet/Outlet Size	DN 25 to DN 100