Retsch Emax - Technical Specifications; Device Performance Data

Technical Data
13
3 Technical Data
3.1 Protective Equipment
− This device is equipped with an automatic hood lock. The lock prevents the device from
being started when in an unsafe state.
− The device can only be started when the hood is closed.
− It is only possible to open the hood when the device has come to a halt.
− The grinding jar support (clamping lever) is permanently monitored before starting and
during the grinding process.
3.2 Degree of Protection
− IP30
3.3 Emissions
CAUTION
C.0020
Risk of injury caused by not hearing acoustic signals
Loud grinding noise
− Loud grinding noise may result in not hearing acoustic warning signals,
leading to injuries.
• Take the volume of grinding noise into consideration when
designing the acoustic signals in the working environment.
• Where necessary, use additional visual signals.
CAUTION
C4.0077
Risk of hearing loss
High sound level
− The sound level may be high depending on the type of material, the
number of balls used, the set grinding frequency and the grinding time.
Excess noise in terms of intensity and duration can lead to impairments or
permanent damage to hearing.
• Ensure you take suitable soundproofing measures.
• Wear hearing protection if there is loud or lasting noise.
Sound parameters:
The sound parameters are also influenced by the properties of the sample material.
Example 1:
Container:
2 steel grinding jars (125 ml)
Grinding body:
50 steel balls each (10 mm)
Feed material:
Quartz sand (~ 0.5 mm)
Feed quantity:
60 ml
Speed:
2 000 rpm
At these operating conditions, the workplace related equivalent continuous sound level
L
eq
= 83 dB(A).