Table of Contents
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Table of contents
1.
Type identification ........................................................................................................................... 2
1.1
Nameplate CR, CRN, CRT ................................................................................................................ 2
1.2
Type key ............................................................................................................................................ 3
1.3
Codes used........................................................................................................................................ 3
2.
Torques and lubricants ................................................................................................................... 4
3.
Service tools .................................................................................................................................... 5
3.1
Special tools ...................................................................................................................................... 5
3.2
Standard tools.................................................................................................................................... 5
3.3
Torque tools....................................................................................................................................... 5
4.
Shaft seals........................................................................................................................................ 6
5.
Dismantling and assembly ............................................................................................................. 7
5.1
Dismantling ........................................................................................................................................ 7
5.2
Assembly ........................................................................................................................................... 8
6.
Order of assembly for chambers and impellers ......................................................................... 11
6.1
CRN 16 ............................................................................................................................................ 11
6.2
CRT 16 ............................................................................................................................................ 12
GB
22.10.2002
Service instructions
CRN 16 model B
CRT 16 model A
50/60 Hz
3~
Page 1 of 12
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Summary of Contents for Grundfos CRN 16 B
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Page 1: Table Of Contents
Service instructions CRN 16 model B CRT 16 model A 50/60 Hz Table of contents Type identification ........................... 2 Nameplate CR, CRN, CRT ........................ 2 Type key ............................3 Codes used............................3 Torques and lubricants ........................4 Service tools ............................ 5 Special tools ............................ -
Page 2: Type Identification
1. Type identification This section shows the type key, the nameplate and the codes that can appear in the variant code. Note: As codes can be combined, a code position may contain more than one code (letter). 1.1 Nameplate CR, CRN, CRT CRN8-140 A-P-G-AUUE B 42630014 P1 00 47 119,4... -
Page 3: Type Key
1.2 Type key Example 16 - XXXX Type range Rated flow rate in m³/h Number of stages x 10 Number of impellers (is only used if the pump has fewer impellers than chambers) Code for pump version a) Code for pipe connection b) Code for materials (excluding plastic and rubber parts) c) Code for shaft seal d) 1.3 Codes used... -
Page 4: Torques And Lubricants
2. Torques and lubricants This section shows the screws and nuts that must be tightened to a certain torque and the lubricants to be used. Pos. Description Dim. Torque [Nm] Lubricant M8 x 25 Hexagon socket head screw Thread-eze M10 x 25 M8 x 25 Hexagon head screw M12 x 45... -
Page 5: Service Tools
3. Service tools The following drawings and tables show special, standard and torque tools for pump service. 3.1 Special tools Pos. Description For pos. Suppl. information Part no. Shaft holder for dismantling SV0287 Punch for removing the shaft SV0286 Shaft holder for assembly SV0040 Puller for neck ring SV0239... -
Page 6: Shaft Seals
4. Shaft seals Stationary shaft seal part Rotating shaft seal part 22.10.2002 Page 6 of 12... -
Page 7: Dismantling And Assembly
5. Dismantling and assembly The GRUNDFOS centrifugal pumps, types CRN 16/CRT 16, are multistage in-line pumps. If it is necessary to dismantle the pump, either because it is choked or damaged, please follow the instruc- tions below. Position numbers, see “Parts list” and section 3. -
Page 8: Assembly
Drive the cover out of the pump head by means of the punch, pos. E, which is inserted in the socket. Re- move the pump head cover. Impeller The impeller (wear ring, pos. 49c) must fit into the neck ring, pos. 45. If the tolerance (clearance) between neck ring and impeller (wear ring) is too big, replace the worn part. - Page 9 Base Fit the guide plate, pos. 6d, the gasket, pos. 37, and the inlet part, pos. 44, in the base. Make sure that the projection on the upper side of the guide plate engages with the inlet part. Outer sleeve CRN 16 S: Fit the clamping plates, pos.
- Page 10 Tighten the hexagon socket head screws two and two (one side at a time), see section 2. Torques and lub- ricants. Check that the gaps either side of the coupling halves are equal and check the pump by turning the coupling. If the pump is tight or it cannot be rotated, a further adjustment should be carried out.
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Page 11: Order Of Assembly For Chambers And Impellers
6. Order of assembly for chambers and impellers 1. Determine pumptype (CRN 16 or CRT 16) and stage variant. Find the pump in the relevant stage sur- vey table. 2. Find the components of each stage in the symbol survey 6.1 CRN 16 Stage survey Symbol survey... -
Page 12: Crt 16
6.2 CRT 16 Stage survey CRT 16 - 30/2 50/4 70/6 100/8 140/12 Note: indicates that ... • the type designation for the pump has been changed • the pump has one or two extra empty chambers • shaft, outer sleeve and staybolts are correspondingly longer.
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