Binder VDL 23 User Manual

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VDL (E3.1) 10/2020 Page 83/196

• Performance after power failure during Time program operation

The program is resumed at the point where the interruption occurred with the latest set-points reached

during the program run.

• Performance after power failure during Week program operation

The week program continues with the values corresponding to the current time.

Power failure and power return are noted in the Event list (chap. 13.5).

If during power failure an alarm has occurred (e.g., tolerance range, safety controller), confirm the alarm.

See chap. 16.3.

9. Start up and performing the drying process

With regard to operating the vacuum drying oven VDL and to the installation location, please observe the

relevant national regulations (for Germany in particular: DGUV guidelines 213-850 on safe working in la-

boratories, issued by the employers’ liability insurance association; Industrial Safety Regulation (Be-

trSichV); Ordinance on Hazardous Substances (GefStoffV); Technical Regulations on Industrial Safety and

Health (TRBS 1201 Part 1).

Note: Warming chambers may release odors in the first few days after commissioning. This is not a quality

defect. To reduce odors quickly we recommend heating up the chamber to its nominal temperature for one

day and in a well-ventilated location.

Do not start up the chamber without technical ventilation (chap. 5.2.2).

9.1 Requirements for safe commissioning

Prior to turning on the chamber, the following points must certainly be met:

• Installation of the chamber (chap. 6) performed in compliance with the installation guidelines and ambi-

ent conditions (chap. 5)

• Compressed air connection established for sweeping the electrical installation room, the preheating

chamber (heating area between inner and outer chamber) and the controller housing. The compressed

air supply line provided by the operator must be equipped with active monitoring of the defined inlet

pressure (2 bar).

• Vacuum supply connected (chap. 6.5)

• If required: Inert gas connection established (chap. 6.6)

• Equipotential bonding established (chap. 6.8)

• Observing all safety instructions

• Upon initial commissioning: Test before initial commissioning performed and passed (Chap. 7.4)

• Upon recommissioning after maintenance / repairs / changes requiring review: Test performed and

passed (Chap. 7.5)

• Technical ventilation activated

• Power connection established (chap. 6.9).

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Binder VDL 23 Vacuum drying