Binder VDL 23 User Manual

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VDL (E3.1) 10/2020 Page 34/196

2.6 Standard Operating Procedures (SOPs)

The operator is responsible to determine the correct auto-ignition temperature of the solvent. To ensure

this, creating Standard Operating Procedures (SOPs) is recommended.

In particular, this should prevent the Residual Risks due to incorrect operation specified in Chap. 1.11

and the exceeding of the auto-ignition temperature of the solvent.

When creating Standard Operating Procedures, take into account the information and instructions in this

Operating Manual. The following are some examples of these risks and suggestions for measures to be

taken. These are to be created, adapted, and supplemented by the operator using the risks determined

and respective conditions at the installation site.

Risk Measures

Operation of the device by un-

trained users

• Ensure knowledge of the Operating Manual

• Use only ATEX-trained personnel

• Create operating instruction and standard operating procedures

Use of an unsuitable solvent

with a too low ignition temper-

ature

Cause: Assumption of wrong

solvent

• Prior to each new drying procedure check again the auto-ignition

temperature with the safety specifications.

• Clearly label the material to be dried to avoid confusion

Information: There is no risk during the proper drying process, since

this takes place in a vacuum. There is only a risk in the event of prem-

ature air supply (termination of the drying process.

• Avoid premature air supply. Also observe the instructions in the Op-

erating Manual.

Reloading with a material with

a lower auto-ignition tempera-

ture

• Prior to each new drying procedure check again the auto-ignition

temperature with the safety specifications and the desired drying

temperature. If appropriate, let the chamber cool down before re-

Termination of the drying pro-

cess due to inadmissible sol-

vent with a too low ignition

temperature.

Ventilation with ambient air or

opening the still hot chamber

Cause: 2 operating errors: in-

correct loading with an inad-

missible solvent; improper

Termination of the drying pro-

cess

• Disconnect the power plug and turn off the pump.

• Let the chamber cool down to room temperature.

• Do NOT remove the “Manual ventilation” plug.

• Only ventilate when the interior temperature has cooled to room

temperature. Only then open the door.

Unnoticed sensor drift or fail-

ure of safety devices due to

missing or delayed mainte-

nance and tests

• Perform regular maintenance and the prescribed tests of the cham-

ber.

• Create detailed maintenance and testing plans and ensure they are

implemented.

This list is NOT exhaustive. The risks result from the risk assessment to be done by the operator (Chap.

2.1). The measures must be determined by the operator of the device based on the risks determined and

the respective conditions at the installation site.

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Binder VDL 23 Vacuum drying

User Manual - Page 34