Grundfos JP Booster PT, Installation And Operating Instructions

Page: 1 / 5

English (GB)
9
English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
Page
1. Symbols used in this document
2. Applications
The JP Booster PT is suitable for pressure boosting
of fresh water in domestic water supply systems.
3. System sizing
4. Electrical connection
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
Single-phase motors incorporate a thermal switch
and require no additional motor protection.
Three-phase motors must be connected to an
external mains switch and a motor-protective circuit
breaker.
1. Symbols used in this document 9
2. Applications
9
3. System sizing
9
4. Electrical connection 9
5. Ejector valve 10
5.1 Ejector valve setting 10
6. Start-up
10
6.1 Shaft seal run-in
10
7. Adjustment 11
7.1 Calculating the cut-in and cut-out
pressures
11
7.2 Adjusting the precharge pressure 11
7.3 Setting the pressure switch 11
8. Operation and maintenance 12
9. Frost protection 12
10. Technical data
12
11. Fault finding
13
12. Disposal 13
Warning
Prior to installation, read this document
and the quick guide. Installation and
operation must comply with local
regulations and accepted codes of
good practice.
Warning
The use of this product requires
experience with and knowledge of the
product.
Persons with reduced physical,
sensory or mental capabilities must not
use this product, unless they are under
supervision or have been instructed in
the use of the product by a person
responsible for their safety.
Children must not use or play with this
product.
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.
Caution
If these safety instructions are not
observed, it may result in malfunction
or damage to the equipment.
Note
Notes or instructions that make the job
easier and ensure safe operation.
Warning
The system in which the product is
incorporated must be designed for the
maximum pump pressure.
Note
The default setting can be found in the
quick guide.
Warning
The electrical installation should be
carried out by an authorised person in
accordance with local regulations.
Warning
During electrical installation, make sure
that the power supply cannot be
accidentally switched on.
Warning
The unit must be connected to an
external mains switch with a minimum
contact gap of 3 mm in all poles.
As a precaution, the pump must be
connected to a socket with earth
connection.
We recommend to fit the permanent
installation with an earth leakage circuit
breaker (ELCB) with a tripping current
≤
30 mA.