Tabla De Contenido; Symbols Used In This Document; Handling; Type Designation - Grundfos CRT Serie Instrucciones De Instalación Y Funcionamiento

English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. Handling
3. Type designation
3.1 Type key
4. Applications
5. Technical data
5.1 Ambient temperature and altitude
5.2 Maximum operating pressure and temperature limits
5.3 Minimum inlet pressure
5.4 Maximum inlet pressure
5.5 Minimum flow rate
5.6 Electrical data
5.7 Frequency of starts and stops
5.8 Dimensions and weights
5.9 Sound pressure level
6. Installation
6.1 Foundation
6.2 Vibration dampening
6.3 Outdoor installation
6.4 Hot surfaces
6.5 Torques
6.6 Flange forces and torques
7. Electrical connection
7.1 Cable entry/screwed connection
7.2 Three-phase connection
7.3 Single-phase connection
7.4 Terminal box position
7.5 Frequency converter operation
8. Start-up
8.1 Shaft seal run-in
9. Maintenance
10. Frost protection
11. Service
11.1 Service kits and manuals
12. Fault finding
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.
Warning
If these instructions are not observed, it may lead
to electric shock with consequent risk of serious
personal injury or death.
If these safety instructions are not observed, it
Caution
may result in malfunction or damage to the
equipment.
Notes or instructions that make the job easier
Note
and ensure safe operation.

2. Handling

When lifting the entire pump with motor, follow these instructions:
• Pump with motor sizes 0.37 to 7.5 kW:
Page
Lift the pump in the motor flange by means of straps or the
like.
7
• Pump with motor sizes 11 to 18.5 kW:
7
Lift the pump by means of the motor eyebolts.
7
7
7
8
8
8
8
9
9
9
9
9
9
0.37 - 7.5 kW
9
10
Fig. 1 Correct lifting of a CRT pump
10
10
In the case of CRT pumps with other motor makes than those
11
mentioned above, we recommend that you lift the pump by
11
means of straps in the motor flange.
11

3. Type designation

12
12

3.1 Type key

12
12
13
Example
13
Type range
13
Rated flow rate in m
14
Number of impellers
14
Code for pump version
14
Code for pipework connection
14
14
Code for materials, excluding plastic and rubber parts
(A = basic version)
15
Code for rubber parts
15
Code for shaft seal

4. Applications

Grundfos multistage in-line centrifugal pumps, type CRT, are
designed for a wide range of applications. Reliable and cost-
efficient, CRT pumps handle a variety of liquids from seawater to
sodium hypochlorite.
Pumped liquids
Thin, clean, non-flammable liquids, not containing solid particles
or fibres. The liquid must not attack the pump materials
chemically.
When pumping liquids with a density and/or viscosity higher than
that of water, use motors with correspondingly higher outputs, if
required.
11 - 18.5 kW
CRT 8 - 12- X - X - X - X- XXXX
3
/h
7