English (GB)
Service instructions
Original service instructions
Table of contents
General information . . . . . . . . . . . . . . . . . . . . . . . . 4
Hazard statements . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Notes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Target group. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
Identification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Nameplate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
Type key . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Service tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
Disassembly and assembly . . . . . . . . . . . . . . . . . . 11
Disassembling the pump . . . . . . . . . . . . . . . . . . . . . 11
Removing the impeller . . . . . . . . . . . . . . . . . . . . . . 14
Assembling the pump . . . . . . . . . . . . . . . . . . . . . . . 15
High pressure seal replacement . . . . . . . . . . . . . . . 22
Dismantling old seal . . . . . . . . . . . . . . . . . . . . . . . . 22
Assembling new seal . . . . . . . . . . . . . . . . . . . . . . . 23
Reference information. . . . . . . . . . . . . . . . . . . . . . 26
Torque table . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Recommended lubricants . . . . . . . . . . . . . . . . . . . . 26
Related documents . . . . . . . . . . . . . . . . . . . . . . . . 28
Service videos . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Fault finding . . . . . . . . . . . . . . . . . . . . . . . . . . . . 29
Exploded drawings. . . . . . . . . . . . . . . . . . . . . . . . 31
1. General information
Read this document before you start service work on the
product. Service work must comply with local regulations
and accepted codes of good practice.
Observe the safety instructions in the installation and op-
erating instructions for the product.
1.1 Hazard statements
The symbols and hazard statements below may appear in Grundfos
installation and operating instructions, safety instructions and
service instructions.
DANGER
Indicates a hazardous situation which, if not avoided, will
result in death or serious personal injury.
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious personal injury.
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate personal injury.
The hazard statements are structured in the following way:
SIGNAL WORD
Description of the hazard
Consequence of ignoring the warning
•
Action to avoid the hazard.
1.2 Notes
The symbols and notes below may appear in Grundfos installation
and operating instructions, safety instructions and service
instructions.
Observe these instructions for explosion-proof products.
A blue or grey circle with a white graphical symbol indi-
cates that an action must be taken.
A red or grey circle with a diagonal bar, possibly with a
black graphical symbol, indicates that an action must not
be taken or must be stopped.
If these instructions are not observed, it may result in mal-
function or damage to the equipment.
Tips and advice that make the work easier.
1.3 Target group
These service instructions are intended for professional installers,
operators and service technicians of the product.
We recommend that service and maintenance be carried out by
skilled persons with technical qualifications required by the specific
legislation in force.
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English (GB)