T29745-X: Additional Equipment_ZN

purpose

Retrofitting additional equipment ZN

qualification

Qualified personnel

Material

Required material

• Torx screwdriver
• Open-end wrench
• Cross screwdriver
• Allen wrench
• Hot air blower

procedure

Cooling / emptying

• On the basic screen, tap the function button ().
  • The unit cools down until the temperature is lower than the cooling temperature. The unit then switches off.

• Slowly loosen the screw plug at the connection, drain (G) until the unit is depressurised. This prevents liquid splashes.
• Place the collection container under the connection.
• Remove screw plug and allow the medium to drain off.
• After completely drain, reinstall the screw plug.

Switch off / remove connections

• Switch off the main switch (QS 1), pull out the mains-connector.
• Remove the cooling water supply (connection C).
• Remove all external hydraulic connections at the Main line (OUT) and Return line (IN)
• For units with a serial number up to 2413-nnn: Remove the intermediate adapter
  • For note on assembly/disassembly, see video http://hb.click/6-SC-T29041

Remove covers / open front

• Remove covers from the unit (→ Open unit).
• Open the front door and fold the front completely down by loosening the two Torx screws.
• Remove the entire upper air duct cover. To do this, unscrew and remove 6 mounting screws.

Install brass module (ZNM)

ATTENTION!

Screw connections are sealed with thread sealant and are therefore slow to release. Otherwise, there is a danger that the screw connection will be damaged (e.g. Tearing off the screw head). That's why:

• If possible, warm up the adhesive compound beforehand

• Disassemble the cooling water module (KWM-Z) and set aside.
  • Remove two plug screws on the underside of the cooling water module, as shown.

• Install the brass module (ZNM, T29473) including associated components as shown on the underside of the cooling water module (KWM-Z).

• Reinstall and install the cooling water module (KWM-Z).

Install stainless steel module (VLM, AV_1)

• Remove the heater module (EHM) and put it aside.

• Remove the stainless steel module (VLM) that has already been installed on the heater module (EHM). This module is no longer required.
• Install the stainless steel module (VLM, T29442-X, T29444) including associated components on the heater module (EHM) as shown.
  • Transfer the temperature sensor (BT_1), thermostat (ST_1) and flexible tube connection (bypass) to the new stainless steel module.

• Reinstall and install the heater module (EHM).
  • Connect the DN10 flexible tube (T29525) from the cooling water module (KWM-Z) to the stainless steel module (VLM) and tighten.

• Re-install the air duct cover with 6x mounting screws.

Connect the cable / stick on the nameplate

• Route the valve cable (T21533-5, T23778-11) along the existing cable harness into the electrical housing.
• Connect the valve cable to the unit board (GIF-61):

• • YV 11 (T21533-5) → X52.4 (GIF-61)
  • M 9 (T23778-11) → X32.2 (GIF-61)

• Replace removed cable ties with new ones.
• Fold up the front and secure 2x Torx screws.
• Stick on the nameplate (T19277):
  • on the back wall of the unit
  • on the inside of the front door
  • in the quick guide (O8402-X)

Check tightness / function

• Re-install external hydraulic connections on the Main line (OUT) and Return line (IN)
• Connect the cooling water supply (connection C).
• Connect the mains-connector and switch on the main switch (QS 1).
• Switch on the unit using the I/O button (), check the tightness and function of the unit.

Switch off / install covers

• Switch off the unit using the I/O button ().
  • The unit switches off and, if necessary, is cooled and depressurised.
• Switch off the main switch (QS 1).
• Re-attach covers from the unit (→ Open unit).