Grundfos JP Booster PT Installation And Operating Instructions

English (GB) Installation and operating instructions
Original installation and operating instructions.
CONTENTS
1. Symbols used in this document
2. Applications
3. System sizing
4. Electrical connection
5. Ejector valve
5.1 Ejector valve setting
6. Start-up
6.1 Shaft seal run-in
7. Adjustment
7.1 Calculating the cut-in and cut-out
pressures
7.2 Adjusting the precharge pressure
7.3 Setting the pressure switch
8. Operation and maintenance
9. Frost protection
10. Technical data
11. Fault finding
12. Disposal
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.
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
Caution
observed, it may result in malfunction
or damage to the equipment.
Page
Notes or instructions that make the job
Note
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easier and ensure safe operation.
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9 2. Applications
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The JP Booster PT is suitable for pressure boosting
of fresh water in domestic water supply systems.
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3. System sizing

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Warning
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The system in which the product is
incorporated must be designed for the
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maximum pump pressure.
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The default setting can be found in the
Note
quick guide.
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4. Electrical connection

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Warning
The electrical installation should be
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carried out by an authorised person in
accordance with local regulations.
Check that the supply voltage and frequency
correspond to the values stated on the nameplate.
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.
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.
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