Danfoss 180U3301 Installation And Commissioning Instructions - Page 6

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9. Water connection:

Water supply

Checking the water supply pressure

High-pressure connection

Water supply

Connection of water supply, filter, low-pressure switch and manometer

are integrated in the common connection block of the Plug&Spray

unit.

The Plug&Spray

such as water from a reverse osmosis plant.

Included in the consignment are a ball valve, rotating fittings and a

check valve preventing return flow into the supply.

The water temperature must be kept between +3 and +50°C, respec-

tively 37 and 122°F.

The supply pressure must not exceed 2 and 4 bar. In case of unstable or

peak water pressure, a pressure reduction valve and an electrical shut

off valve are recommendable.

A supply pressure of at least 2 bar/29 psi is recommended to compen-

sate for the pressure loss in the filter element depending on the degree

of contamination. The low-pressure protection switch is set to 1,6 bar.

Make sure that the water supply pressure is neither insufficient nor

excessive. Check the reading of the manometer.

The manometer measures the pressure after the filter and can thus be

used to monitor the filter condition.

Cavitation or over-pressurization can cause severe damage to the

pump.

Two high-pressure connections are integrated in the common

Plug&Spray

The ports are G 3/8" female. One of the connections is plugged from

factory.

On request, a 3/8" NPT adapter is available.

521B0881 DKCFN.PI.020.F1.02

units can operate on tap water or technical water,

connecting block.