Tabla De Contenido; Symbols Used In This Document; General Information; Product Description - Grundfos CR 95 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. 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, it may
Caution
result in malfunction or damage to the equipment.
Notes or instructions that make the job easier and
Note
ensure safe operation.

2. General information

These installation and operating instructions are a supplement to
installation and operating instructions for standard CR, CRN
pumps, publication No 99078486.

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 type CR 95
CR ●
CRN ●
● Available.
Page
5
5
5
5
5
5
5
6
6
6
7
8
8
8
8
CR 125 CR155
● ●
● ●

5. Temperature range

The air-cooled top is available for three different temperature
ranges:
Material of
Liquid temperature [°C]
rubber parts
Water-based liquids
120-150 EPDM
120-180 FXM/EPDM
Thermal oils
120-240 FKM
120-180 FKM

6. Vent positions

6.1 Vertical pumps

Fig. 1 Vent positions on vertical CR pumps
6.1.1 Dimensions
Fig. 2 Dimensional sketch
Key to fig. 2
Pump type
CR, CRN 95, 125, 155 (5.5 - 7.5 kW)
CR, CRN 95, 125, 155 (11 - 22 kW)
CR, CRN 95, 125, 155 (30 - 37 kW)
CR, CRN 95, 125, 155 (55 kW)
PN CR
25 95-155
25 95-155
16 95
16 125-155
x [mm]
220
245
270
320
5