Heidolph MR Hei-Tec - Manual (Page 11)

3
Operating personnel’s obligations
 Ensure that work which uses naked flames is not carried out in the vicinity of the device (risk of explo-
sion).
 Ensure that the flow rate when removing liquids with flammable materials remains at < 1 m/s (electro-
static charge; risk of ignition).
 Ensure that gases classified in explosion group IIC are not produced by materials or during chemical reac-
tions, e.g. hydrogen.
 Ensure that no devices are operated or assembled which are emission or radiation sources (electromag-
netic waves) for the frequency range (3×10 11 Hz bis 3×10 15 Hz).
 Ensure that no devices are operated or assembled which constitute emission or radiation sources for ioniz-
ing radiation or in the ultrasonic range.
 Ensure that no adiabatic compression or shock waves occur (shock wave combustion).
 Please wear the appropriate protective clothing when working on the machine (protective glasses and if
necessary, safety gloves).
 Ensure that sufficient heat transfer media are used.
 Ensure that the correct heat and cold protection is used in relation to the media implemented.
 Please avoid putting pressure on the display.
Personnel qualification
The target group for this device is qualified personnel. The device may only be operated by individuals who
have been instructed in its proper use by qualified personnel.
NOTICE Operating instructions
These operating instructions must be followed, read and understood by all persons work-
ing on the device (acknowledgment of the safety instructions is particularly important).
Safety-conscious operation
Heidolph Instruments does not accept liability for personal injury or damage to property which may result
from improper and unprofessional working procedures.
 The following regulations must be observed:
 laboratory guidelines
 accident prevention regulations
 the Ordinance on Hazardous Substances
 other generally recognized regulations of safety engineering and industrial medicine
 local regulations
Safety devices on the unit
The safety circuit switches itself off under the following circumstances:
 The preset hotplate temperature (set value) is exceeded by the safety temperature (max. 25 °C) (only for
MR Hei-Tec in Precise-Mode).
 The hotplate temperature measured (actual value) is greater than 360 °C.
 Sensor break or sensor shorted in the temperature sensor of the safety circuit.
 Sensor break or sensor shorted in the temperature sensor of the control circuit.
 Sensor break or sensor shorted in the safety circuit of the external temperature sensor.
 Sensor break or sensor shorted in the control circuit of the external temperature sensor.
 The sensor difference is too great.