Tuttnauer 3870M Service Manual

65 pages

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OPERATION

MAINTENANCE

MANUAL

Table-Top Autoclaves

Models 1730, 2340, 2540, 3545, 3850, 3870M

Questions and Answers:

P
Paul PotterAug 14, 2025
What to do if the POWER indicator light doesn't light up on my Tuttnauer 3870M?
- G
  garzasergioAug 14, 2025
  If the main switch is in the START position but the POWER indicator light doesn't illuminate on your Tuttnauer Laboratory Equipment, first ensure the equipment is receiving power. Check the circuit breaker and lift the lever if it has tripped. If power is available, the main switch itself may be defective and require checking or replacement. You can test the bulb by setting the timer for 15 minutes and turning the multi-purpose valve to the DRY position; if the HEAT & DRY lights illuminate, the POWER bulb is likely burnt and needs replacement. If none of the lights turn on, there may be a fault in the electrical line, which needs to be checked and repaired from the entry point to the main switch.
J
Julie ThompsonAug 18, 2025
Why is the pressure safety valve activated and heating continues in STE position in my Tuttnauer 3870M Laboratory Equipment?
- E
  Elizabeth RiceAug 18, 2025
  If your Tuttnauer Laboratory Equipment shows sufficient temperature and pressure, but the pressure safety valve is activated and heating continues while in STE position, it indicates that either the pressure switch (B10) is faulty and not stopping the heating at the required temperature, or the pressure safety valve itself is defective. In either case, the pressure switch (B10) should be fixed or replaced, and the pressure safety valve should be replaced if it's faulty.

Tuttnauer 3870M Specifications

General

Type	Autoclave
Trays Capacity	3
Chamber Material	Stainless Steel
Warranty	1 year
Power Supply	230V
Frequency	50 Hz
Temperature Range	105-134°C
Operating Pressure	2.1 bar