purpose

Thermostat replacement (ST 1)

qualification

Qualified personnel

Material

Pos.DesignationT28825T28824T28823T29570 road
01thermostat 115°C1---
01thermostat 155°C-1--
01thermostat 170°C--1-
01thermostat 190°C---1

Required material

  • Torx screwdriver size 20
  • Torx screwdriver size 10
  • Lubricant (prevents stainless-steel combinations from getting stuck)

procedure

ATTENTION!

Working with the unit requires knowledge of the safety instructions and quick guide. That's why:

Read the safety instructions and quick guide carefully before starting any work. The basic requirement for safe work is compliance with all safety instructions and careful action by qualified qualified personnel to prevent accidents involving personal injury and property damage.

Switch off / remove covers

  • 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.

  • Switch off the main switch (QS 1), pull out the mains-connector.
  • Remove covers from the unit (→ Open unit).

Replace spare part

  • Remove the thermostat mounting screws (ST_1).
  • Remove the thermostat cable flat plug from the thermostat.

ATTENTION!

Screw connections, in particular combinations of stainless steel/stainless steel or steel/stainless steel, tend to get stuck or get stuck when operation for a long time at high temperatures. That's why:

  • Use appropriate lubricants

  • Install the thermostat cable flat plug on the new thermostat (ST_1).

ATTENTION!

For reliable function, it is important to ensure a perfect thermal contact surface between the thermostat and the surface.

  • Install the new thermostat (ST_1) and secure it with the mounting screws.
    • Make sure that the thermostat is in firm and complete contact with the surface.

Install covers

  • Re-attach covers from the unit (→ Open unit).

Check function

  • 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 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), pull out the mains-connector.