Service/maintenance
OPERATION MANUAL
Chapter 7
Unistat® T300 Series
Liability for errors and misprints excluded.
V1.2.0en/12.05.15//14.06
76
7
Service/maintenance
7.1
Messages from the temperature control unit
Messages output by the temperature control unit can be divided into various classes.
Follow the instructions displayed on the
>Touchscreen<
[88]. Once a message has been acknowl-
edged, a symbol is output on the
>Touchscreen<
[88]. Tapping the symbol takes you to an overview
of all messages in chronological order.
Displayed symbol:
7.2
Replacing the “Pilot ONE®” or “Unistat® Control ONE”
Replacing the electronics while the temperature control unit is operating
MORTAL DANGER FROM FIRE
Stop an ongoing temperature control process.
Disconnect the temperature control unit from the power supply by turning the
>Mains isola-
tor<
[36] on the temperature control unit to “0”.
Also disconnect the temperature control unit from the current supply.
In case of fault, you can replace the “Pilot ONE” or the “Unistat Control ONE” yourself. If you have
questions or difficulties, please contact your dealer, your local office or our Customer Support.
7.2.1
Replacing the “Pilot ONE®”
PROCEDURE
Switch off the temperature control unit. Do this by turning the
>Mains isolator<
[36] to “0”!
Disconnect the temperature control unit from the current supply.
Release the
>Fixing screw for Pilot ONE<
[89] at the front of the housing.
Carefully pull the “Pilot ONE” away upwards.
Carefully insert the replacement “Pilot ONE”.
Connect the
>Fixing screw for Pilot ONE<
[89] to the front of the housing.
Connect the temperature control unit to the power supply.
Switch the temperature control unit on.
Replacing the
“Pilot ONE”
