Heidolph Hei-VAP Precision - Manual (Page 48)

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Maintenance, cleaning, service Maintenance, cleaning, service
Maintenance
Only use genuine parts approved by the manufacturer!
The vapor tube and PTFE 26 vacuum seal must be routinely serviced.
1. Remove and clean the vapor tube and the PTFE 26 vacuum seal (see chapter “Set-up
and start-up“ – “Glassware sets”).
2. Check the PTFE 26 vacuum seal for damages and wear, replace if necessary.
Resetting the maximum temperature limiter
In the event that the temperature controller malfunctions and the heating bath
temperature exceeds the maximum temperature of 250 °C, the maximum temperature
limiter will switch off the heating bath.
The heating bath is cooled and disconnect from power supply. Power-switch off.
1. Remove the heating bath liquid from the heating bath.
WARNING Hot surfaces!
Burns.
Cool the heating bath.
WARNING Verify that the basic device is only plugged to or unplugged from the
heating bath if the main switch is switched off and/or the main power
supply is disconnected.
Figure 8-1: Maximum temperature limiter
1
2. Press the maximum temperature limiter (1), possibly with a pointed object.
Evacuate the heating bath
1. The heating bath is cooled and disconnect from power supply. Power-switch off.
2. Take the heating bath from off the device.
WARNING Verify that the basic device is only plugged to or unplugged from the
heating bath if the main switch is switched off and/or the main power
supply is disconnected.
3. The edge of the heating bath is designed to easily evacuate the heating bath.
Evacuate the heating bath.