'操作说明 Hotflow THREE_26_zh.pdf - 第489页

6. ASSEMBL Y ENGLISH T ranslation of the original 32 451820.66.03_EN 2020-05-05

Translation of the original ENGLISH 6. ASSEMBL Y

451820.66.03_EN

2020-05-05

6. ASSEMBLY

Follow the safety notes in chapter 1!

6.1 Connecting the water pipes

The nominal width of the pipes for the external water circuit must be defined taking the available

pump pressure and the expected pressure drop in the consumer circuit into account.

Water pipes can be rigid or flexible and must be stress-free. The corrosion behaviour of the

materials used in the consumer with the water must be taken into account to prevent damage.

(See chapter 7 "Commissioning")

See also technical section (RI flow diagram, dimension sheet)

When installing the on-site pipework, contamination of the piping must be avoided.

(Rinse pipes before connecting the cooling unit!)

6.2 Electrotechnical connection

Tasks to be carried out:

The cooling unit has been designed to allow a remote control to be connected. When delivered,

a link cable is positioned between the terminals.

The centralised fault indication is wired to the terminal as a floating contact.

(See wiring diagram in appendix)

When decommissioning the consumer in the frost period, the mains disconnecting device

(main switch) must remain activated, thus enabling the pump(s) and electric heating to enter

standby mode.

1. Check the supply voltage as per the device specification

2. Remove the covering panel on the operator side

3. Insert the connection cable from below through the cable grommet provided in the

baseplate (left or right depending on the cooling unit)

4. Lay the cable appropriately in the cooling unit and connect it to the control cabinet by

passing it through the cable gland

5. Establish the electrical connection in accordance with the wiring diagram (see technical

section)

6. ASSEMBL Y ENGLISH Translation of the original

451820.66.03_EN

2020-05-05

Translation of the original ENGLISH 7. COMMISSIONING

451820.66.03_EN

2020-05-05

7. COMMISSIONING

Follow the safety notes in chapter 1!

At storage temperatures < +10 °C, ensure acclimatization takes place before switching on

(condensate formation). Only use the cooling unit for cooling water. Only use water to fill the

water circuits, following the relevant specifications!

As a rule, the water circuit must be set up before the refrigerant circuit!

7.1 Water circuit

7.1.1 Requirements for the water

See chapter 1.10

7.1.2 Commissioning of atmospherically open single- and dual-circuit systems

Tasks to be carried out:

If the direction of rotation of the pump is incorrect, disconnect the cooling unit from the

power and swap 2 phases of the main connection cable.

1. Switch mains disconnecting device (main switch) to position "0"

2. Ensure all motor protection switches, control switches and circuit breakers are in

position -0-

3. Remove covering panels on the service side

4. Remove the tank lid

5. Fill tank with water up to the -MAX- marking on the fill level indicator

6. Purge the pump(s) via the bleeder screw on the pump housing

7. Switch fuses and motor protection switches for pump(s) and fan(s) to position "1"

(see wiring diagram)

8. Switch on the pump(s) via the mains disconnecting device, control switch in position -1-

9. Check the specified direction of rotation of the pump(s) (see rotation direction arrow on

the drive motor)

10. Perform a visual check of the entire water circuit for leaks

11. Check the fill level indicator to ensure compliance with the requisite water fill level;

refill with water if necessary

12. Mount the tank lid and covering panels