Micro localización

 The suction line can be connected either on the right or on the outer left of the booster pump assembly. In case of tank operation it is recommended to connect two suction tubes in parallel to avoid pressure drops in the suction line.

 The pressure port is located in the center and can be connected using a tubing or a pipe for a fixed connection. A high-pressure Note

Start-up of the system must be performed by a trained technician. The wiring must be adapted to fit the respective field of application.

Note

Prior to its start-up, check the system for damage caused during transport. If there are signs of damage to the electric components, do not turn the system on.

Booster pump assembly (CRN5-8)

Fresenius Medical Care Service Manual SM-EN 1/03.11 5-3 5.2.2.2 Connection to the domestic water supply network

 Positioning the pressure switch

The pressure switch installed at the water inlet ensures protection against running dry. Upon delivery, the pressure switch is set to 1 bar. It is recommended to retain this setting. If the pressure in the water inlet drops below 1 bar, the booster pump assembly will be stopped. If this dynamic minimum pressure is not reached, it is recommended to use a feed water tank.

 Pressure switch installation position

Note

If a pipe separator or a pressure reducer is installed on the outlet side of the booster pump, the pressure sensor must always be installed after these components.For the installation, remove the screw-type adapter in the outlet block and integrate it after the pipe disconnector.

State upon delivery: Dismounting the adapter

 State upon delivery: When the system is supplied, the pressure sensor is installed with an adapter at the pump outlet, this adapter must be removed and must be installed after the pressure reducer and the pipe separator.

 The pressure sensor is installed on the outlet side after the pressure reducer and the pipe separator.

Pressure switch installation position and connection (run-dry protection)

 Booster pump assembly with pump switching

Pressure switch installation position and connection

 Pressure switch installation position (after pipe separator and pressure reducer)

Pressure switch installation position and connection (run-dry protection)

 Electrical connection of the pressure switch for the run-dry protection

Pressure switch installation position and connection

Fresenius Medical Care Service Manual SM-EN 1/03.11 5-5

 Verification / setting of the pressure switch

Connection of the pressure switch

Pressure switch connection  Connection 1: white  Connection 2: brown

Pressure sensor connection

Pressure sensor connection  Connection 1: brown  Connection 2: white

Reference point on the scale

Rotate the selector fully counter-clockwise.

 The selector must first be rotated fully counter-clockwise.

Adjust the selector to the reference point.

 Rotate the selector approx. ¼ of a turn clockwise until the figure "1" is above the reference point.

Adjust the selector to the reference point.

 Adjust the scale reference point.

 The pressure switch is now set to 1 bar. This means the operating pressure of the pump is 1 bar.

 Due to the pressure switch's hysteresis, the switch-off pressure is slightly below 1 bar (approx. 0.5 bar).

Fresenius Medical Care Service Manual SM-EN 1/03.11 5-7 5.2.2.3 Connection to a feed water tank

Note

In case of tank operation, the tank must be provided with a float switch which will open a contact if the tank is empty. This contact is connected in the pump inlet instead of the pressure switch.

Tank connection

 The inlet of the booster pump assembly is directly connected to the outlet of the tank using the pump connection set no. 6319211.  The suction line can be connected either on the right or on the outer

left of the booster pump assembly.

 In case of tank operation it is recommended to connect two suction tubes in parallel to avoid pressure drops in the suction line.

 The pressure port is located in the center and can be connected using a tubing or a pipe for a fixed connection. A high-pressure tubing with a length of x cm is included in the accessories package of the system.

 The pressure sensor is connected directly to the pump outlet.  The inlet pressure switch on the water inlet side of the pump is not

used during tank operation. In its place the float switch (see illustration) must be wired in. This must be done during installation.

Pressure switch installation position and connection (run-dry protection)

 A float switch which is installed in the feed water tank ensures run- dry protection.

Pressure switch installation position and connection

 Installation position of the pressure sensor on the pump outlet (state upon delivery)

Fresenius Medical Care Service Manual SM-EN 1/03.11 5-9 5.2.2.4 Power supply

A 400 V; 3 N ~; 50 Hz; 16 A three-phase current connection is required to supply the pump switching unit with voltage.

 Connection of a leakage detector

The floating contact of a leakage detection system can be connected to the booster pressure assembly. The contact must be closed if there is no leakage and must open if a leakage occurs.

It is recommended to use the insert of the leakage detecting system. It can be connected directly to the pump control (see illustration )