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CR 1s
Grundfos CR 1s User Manual
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www
.grundfos.us
L-CR-TL
-001
98419736
04.2021
ECM: 131
1425
www
.grundfos.com
Trademarks displayed
in this
material,
including
but not
limite
d to
Grundfos,
the
Grundfos logo
and
“be
think innovate”
are
registered trademarks
owned
by
The Grundfos
Group.
All rights
reserved.
© 2021 Grundfos Holding A/S, all rights reserved.
36
Table of Contents
Table of Contents
3
Limited Warranty
3
General Information
4
Hazard Statements
4
Notes
4
Introduction
4
Receiving the Product
5
Transporting the Product
5
Lifting Instructions
5
Inspecting the Product
5
Ensure You Have the Right Pump
5
Pump End Without Motor
6
Drive-End Motor Bearing
6
Identification
6
Nameplate Data
6
Type Keys
7
Applications
10
Operating Conditions
10
Ambient Temperature and Altitude
10
Liquid Temperatures
10
Minimum Inlet Pressures
10
Maximum Inlet Pressures
11
Maximum Operating Pressures
11
Mechanical Installation
12
Lifting the Product
12
Pump Location
12
Outside Installation
12
Foundation
12
Pump Mounting
14
Inlet Pipe
14
Outlet Pipe
14
Bypass
15
Flange Forces and Torques
16
Minimum Continuous Duty Flow Rates [Gpm]
17
Check Valves
17
Temperature Rise
18
Electrical Connection
18
Motors
19
Position of Terminal Box
19
Field Wiring
19
Motor Protection
19
Starting up the Product
20
Priming
20
Startup Instructions
21
Operating the Product
21
Operating Parameters
21
Pump Cycling
22
Boiler Feed Installations
22
Frost Protection
22
Servicing the Product
22
Contaminated Products
22
Maintaining the Pump
23
Maintaining the Motor
23
Motor Inspection
23
Motor Lubrication
24
Replacing the Motor
25
Disassembly
25
Assembly
25
Parts List
27
Spare Parts
27
Preliminary Electrical Tests
28
Supply Voltage
28
Current
28
Insulation Resistance
28
Startup of Pump with Air-Cooled Top (Cool-Top ® )
29
Diagnosing Specific Problems
30
Worksheet for Three-Phase Motors
33
Disposal
34
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Instructions
140 pages
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Grundfos CR 1s Specifications
General
Brand
Grundfos
Model
CR 1s
Category
Water Pump
Language
English
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