Heidolph LABOROTA 4000 up to 4003 - Manual (Page 125)

Maintenance, cleaning, service
1.02 Laborota 4000/4001 efficient, 4010/4011 digital, 4002/4003 control 123
8.1.2 Resetting the temperature limiter
The temperature limiter is designed to turn off the heating bath in case the
temperature controller fails and the temperature of the heating bath exceeds
the maximum by approx. 10%.
Heating bath is cool.
Hot surfaces!
Danger of burns.
Let heating bath cool.
1. Remove the liquid from the heating bath.
Fig. 8-1: Temperature limiter
2. Press the temperature limiter (1), using a pointed object if necessary.
8.1.3 Adjusting vacuum seal
(glassware G6)
Fig. 8-2: Adjusting the vacuum seal, glassware G6
The seal in the valve (1) can be adjusted with a screwdriver.
Danger of glass breakage!
Danger of cuts.
Take care not to turn the adjuster screw too far.
1. Tighten the screw of the valve in the junction G6 (2) to the stop.
2. Turn the adjuster screw clockwise until a white ring can be seen on the
glass shaft.
WARNING
CAUTION