Power/Function Key Switch; Fig. 24, Replacement Of The Power/Function Key Switch - Heraeus HS 9 Service Manual

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4. Replacement of defined spare parts
4.18

Power/Function Key switch

Replacement of the Power/Function Key switch:
NOTE - Safety precautions:
Observe the safety instructions!
Check decontamination of the unit!
1. Switch the cabinet off using the Power/Function
Key switch; disconnect the two power supply ca-
bles from the mains supply and protect them
against accidental reconnection.
2. Open the hood (see section 3.3).
3. Open the control box (see section 3.4).
4. Disconnect the connection lines from the
Power/Function Key switch.
5. Fig. 24: The retaining screws of the
Power/Function Key switch [2] are located under-
neath the foil [1]. Remove the foil.
6. Remove the two retaining screws [3] and remove
the Power/Function Key switch.
7. Install the new Power/Function Key switch and
secure it with the screws.
8. Install new control panel overlay.
9. Connect the connection lines in the control box.
10. Close the control box.
11. Close the hood (see section 3.3).
NOTE - Unit commissioning:
Prior to the commissioning of the unit:
Perform test run!
Check safety devices for proper opera-
tion!
Figure 24
Fig. 24, Replacement of the Power/Function Key
switch
• 36 •
Service Instructions HERAsafe HS/12/18
Valid: 05.2001 / 50060091 / A
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