Tabla De Contenido; Symbols Used In This Document; General Information; Product Description - Grundfos CR 1s Manual Del Usuario

English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. General information
3. Product description
4. Applications
5. Temperature range
6. Air vent positions
6.1 Vertical pumps
6.2 Horizontal pumps
7. Seal chamber connections
8. Sectional drawings
9. Startup
10. Operation
11. Frost protection
12. Dimensions
13. Disposal
Warning
Prior to installation, read these installation and
operating instructions. Installation and operation
must comply with local regulations and accepted
codes of good practice.

1. Symbols used in this document

Warning
If these safety instructions are not observed,
it may result in personal injury.
If these safety instructions are not observed,
Caution
it may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
Note
and ensure safe operation.

2. General information

These installation and operating instructions are a supplement to
installation and operating instructions for standard CR, CRI, CRN
pumps, publication No 96462123, and for CRN-SF pumps,
publication No 96530119.

3. Product description

The Grundfos air-cooled top separates the seal chamber from the
chamber stack by an air-cooled chamber.
Before reaching the shaft seal, the hot liquid is cooled to a
temperature of +120 °C or lower (at a maximum liquid
temperature of +180 °C) when flowing through the air-cooled
chamber.

4. Applications

The air-cooled top is available for the following Grundfos pumps:
Pump CR CR CR CR CR CR
type 1s 1 3 5 10 15
CR
● ● ● ● ●
CRI
● ● ● ● ●
CRN
● Available.
CRT, CRTE pumps are not available with air-
Note
cooled top.
Page
CR CR CR CR CR CR
20 32 45 64 90 120
● ● ● ● ●
● ●
● ● ● ● ● ● ●

5. Temperature range

The air-cooled top is available for three different temperature
ranges:
5
Liquid temperature [°C]
5
Water-based liquids
5
5
120-150
5
120-180
5
Thermal oils
5
120-240
6
6 120-180
7

6. Air vent positions

8
9

6.1 Vertical pumps

9
9
9
Fig. 1 Air vent positions on vertical CR pumps
6.1.1 Dimensions
Fig. 2 Dimensional sketch
Key to fig. 2
Pump type
CRI, CRN 1s, 1, 3, 5
CRI, CRN 1s, 1, 3, 5
CR
CRI, CRN 10, 15, 20
150
CRI, CRN 10, 15, 20
●
CRI, CRN 10, 15, 20
CR, CRN 32
●
CR, CRN 45, 64
CR, CRN 90
CR, CRN 120, 150
CR, CRN 120, 150
Material of
PN CR
rubber parts
EPDM 25 1-150
FXM/EPDM 25 1-150
FKM 16 1-90
FKM 16 120-150
3 o'clock 12 o'clock
6 o'clock
x [mm]
142
(3 - 7.5 kW) 172
(< 4 kW) 156
(4 - 7.5 kW) 186
(11 - 18.5 kW) 217
176
186
190
(11 - 45 kW) 190
(55 - 75 kW) 243
5