WARNING
Pressurised system
Death or serious personal injury
‐ Before dismantling the pump, drain the
system or close the isolating valves on
both sides of the pump. Slowly loosen
the drain plug and unpressurise the
system.
CAUTION
Impurities in the water
Minor or moderate personal injury
‐ Before the pump is used for supplying
drinking water, flush the pump
thoroughly with clean water.
‐ Use spare parts approved by
Grundfos.
Only qualified persons are allowed to
service the pump.
6.1 Maintenance
The product is maintenance-free during normal
operation. For cleaning, use a dry and dust-free cloth.
6.2 Maintaining the pressure tank
Check the precharge pressure annually.
The pressure tanks are supplied from factory with a
precharge pressure. See tank nameplate.
Do not use a tank with signs of damage, such as
dents, leakage or corrosion.
6.2.1
Adjusting the precharge pressure
CAUTION
Pressurised system
Minor or moderate personal injury
‐ Before starting work on the product,
make sure there is no system pressure
on the tank.
‐ Disconnect pumps or switch off the
power supply.
1. Make sure that there is no water pressure in the
tank. Switch off the pump and open a tap, or
close the isolating valves and drain the pump.
2. Use a suitable pressure gauge to check the
precharge pressure.
3. Release or add compressed air to make the
precharge pressure equal to the recommended
precharge pressure.
4. If water escapes during the precharge-pressure
check, the membrane is defective.
6.3
Service kits
For further information on service kits, see Grundfos
Product Center at www.product-
selection.grundfos.com.
7. Taking the product out of operation
WARNING
Electric shock
Death or serious personal injury
‐ Switch off the power supply before you
start any work on the product. Make
sure that the power supply cannot be
switched on accidentally.
If the product is taken out of operation for a period of
time, for example during winter, it must be
disconnected from the power supply and placed in a
dry location.
Follow these steps:
1. Disconnect the product from the power supply.
2. Open a tap to release the pressure in the pipe
system.
3. Close the isolating valves and/or drain the pipes.
4. Gradually loosen the drain plug to release the
pressure in the product.
5. Drain the product by removing the drain plug.
6. Store the product according to the recommended
storing conditions.
Related information
7.1 Draining JP and JP PT-V
7.2 Draining JP PT-H
7.3 Storage of the product
7.1
Draining JP and JP PT-V
To drain the JP pump and JP Booster with a vertical
pressure tank, do as follows:
1. Unscrew the drain plug using a screw driver.
2. Let the water flow out of the pump.
17
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