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CNH-B series
Allweiler CNH-B series User Manual
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Centrifugal
pump
with
volute
casing
Original
Operating
Manual
CNH-B
series
V
ersion
BA-2017.02
en-US
ID-No.
550
1
15
145-353/0
ALL
WEILE
R
GmbH
Postfach
1
140
Allweilerstr.
1
78301
Radolfzell
Germany
Phone:
+49
(0)
7732-8
6-0
Fax:
+49
(0)
7732-8
6-43
6
Email:
service@allweiler
.de
Internet:
http://www
.allweiler
.com
We
reserve
the
right
to
make
techni
cal
changes.
Read
carefully
before
use.
Save
for
future
use.
2
Table of Contents
Default Chapter
2
Table of Contents
2
1 About this Document
6
Target Groups
6
Other Applicable Documents
6
Tab. 1 Target Groups and Their Duties
6
Tab. 2 Other Applicable Documents and Their
6
Purpose
6
Warnings and Symbols
7
Technical Terms
7
Tab. 3 Warnings and Consequences of Disregarding
7
Tab. 4 Symbols and Their Meaning
7
Tab. 5 Technical Terms and Their Meaning
7
Them
7
2 Safety
8
Intended Use
8
General Safety Instructions
8
Product Safety
8
Operator's Obligations
9
Duties of the Operating Personnel
9
Special Hazards
9
Explosion Hazard Area
9
Hazardous Pumped Media
9
3 Layout and Function
10
Labels
10
Type Plate
10
ATEX Plate
10
Pump Type Code
10
Tab. 6 Design Characteristics
10
Construction
11
Shaft Seals
11
Mechanical Seals
11
Packing Gland
11
Fig. 4 CNH-B Construction (with Oil Lubrication)
11
Auxiliary Systems
12
Sealing Systems
12
Tab. 7 Quenching - Variants and Characteris
12
Tab. 8 Blocking - Variants and Characteristics
12
Fig. 6 Double Mechanical Seal with External Seal Barrier/Buffer Fluid Reservoir (Sketch)
12
Cooling the Bearing Housing
13
Cooling the Shaft Seal
13
Heating the Housing
13
4 Transport, Storage and Disposal
14
Transport
14
Unpacking and Inspection on Delivery
14
Lifting
14
Fig. 10 Fastening the Lifting Gear to the Pump Aggregate
14
Preservation
15
Storage
15
Remove the Preservative Treatment
15
Disposal
15
Tab. 9 Treatment for Storage
15
5 Setup and Connection
16
Preparing the Setup
16
Checking the Ambient Conditions
16
Preparing the Site for the Installation
16
Preparing the Foundations and Installation Surface
16
Remove the Preservative Treatment
16
Installing the Heat Insulation (Optional)
16
Installing with Foundations
17
Setting the Pump Aggregate on the Foundation
17
Fixing the Pump Aggregate
17
Fig. 12 Installation with Foundation
17
Installation Without Foundation
18
Mounting the Motor
18
Planning the Piping
18
Specifying Supports and Flange Connections
18
Fig. 14 Installation Without Foundations
18
Specifying Nominal Diameters
19
Specifying Pipe Lengths
19
Optimizing Cross-Section and Direction Changes
19
Discharging Leaks
19
Providing Safety and Control Devices (Recommended)
19
Connecting the Pipes
19
Keep the Piping Clean
19
Installing Auxiliary Piping
20
Installing the Suction Pipe
20
Installing the Pressure Pipe
20
Inspection for Stress-Free Pipe Connections
20
Inspecting the Support Foot (183.1) for Distortion
20
Electrical Connection
20
Connecting the Motor
20
Checking the Direction of Rotation
20
Precisely Align the Coupling
21
Fig. 16 Checking the Alignment of the Coupling
21
Aligning the Motor
22
Aligning the Motor Using Sets of Shims
22
Aligning the Motor with Adjusting Screws
22
5.10 Installing the Coupling Guard
22
6 Operation
23
Preparations for the Initial Start-Up
23
Identifying the Pump Type
23
Remove the Preservative Treatment
23
Lubricating the Bearings
23
Preparing Auxiliary Systems (if Available)
24
Filling and Bleeding
24
Start-Up
25
Switching on
25
Switching off
26
Shutting down
26
Tab. 10 Actions to be Taken for Pump Shutdowns
26
Tab. 11 Measures Depending on Nature of Pumped Medium
26
Start-Up Following a Shutdown Period
27
Running the Stand-By Pump
27
Tab. 12 Actions to be Taken after Prolonged Shutdown Periods
27
7 Maintenance
28
Inspections
28
Antifriction Bearings Lubricated with
28
Grease
28
Antifriction Bearing with Oil Lubrication
28
Mechanical Seals
29
Packing Gland
29
Cleaning the Pump
29
Disassembling
29
Returning the Pump to the Manufacturer
30
Preparations for Disassembling
30
Assembling the Pump
30
Tab. 13 Actions for Return
30
Ordering Replacement Parts
31
8 Troubleshooting
32
Tab. 14 Fault Number Assignment
32
Tab. 15 Troubleshooting List
34
9 Appendix
35
Sectional Drawings
35
Auxiliary Connections
35
Part Numbers and Designations
35
Tab. 16 Abbreviations for the Connection Names
35
Tab. 17 Designations of Components Listed with Part Numbers
36
Overview Sectional Drawing
37
Fig. 22 Dust Protection Version in Category 2D
38
Variants
39
Tab. 18 Dimension a for KU-Type Mechanical Seals According to en 12756
40
Fig. 27 Single Mechanical Seal and Quenching
40
Tab. 19 Dimension a for Mechanical Seals According to en 12756
41
Fig. 29 Double Mechanical Seal
41
Coupling Guard
42
Tab. 20 Dimension a for Mechanical Seals According to en 12756
42
Technical Speciļ¬cations
43
Ambient Conditions
43
Parameters for Auxiliary Systems
43
Tab. 21 Ambient Conditions
43
Tab. 23 Required Amount of Sealing Medium
43
Tab. 24 Operating Parameters for Sealing Medium
43
Tab. 25 Operating Parameters for Heating Chamber
43
Tab. 26 Parameters for Coolant
43
Sound Pressure Level
44
Tightening Torques
44
Tab. 27 Sound Pressure Level
44
Tab. 28 Tightening Torques
44
Lubricants
45
Cleaning Agents
45
Tab. 29 Minimum Amounts for Oil Lubrication
45
Tab. 30 Cleaning Agents
45
Height Offset to Align the Motor Using Adjusting Screw
46
Tab. 31 Height Setting on the Adjusting Screw
46
Flange Loads According to ISO 5199
47
Tab. 32 Flange Loads
47
Temperature
48
Spare Parts for 2 Years of Continuous Operation According to DIN 24296
49
Tab. 33 Replacement Parts for 2 Years of Continuous Operation
49
Declaration of Harmlessness
50
Tab. 34 Declaration of Harmlessness
50
Declaration of Conformity According to EC Machine Directives
51
Tab. 35 Declaration of Conformity According to EC Machine Directives
51
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Allweiler CNH-B series Specifications
General
Brand
Allweiler
Model
CNH-B series
Category
Water Pump
Language
English
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