Retsch RM 200 - Manual (Page 21)

11/6/2012 21  Retsch GmbH 0002
Checking the scraper setting
Fig.11
The scraper fulfils its function only if adjustment of
the contact pressure and contact with the bottom of
the mortar is optimum.
This can best be assessed by carrying out a neutral
milling operation.
Control milling operation
We recommend the following mixture as neutral
milling material:
e.g. 4 – 5 teaspoons of powder sugar
5 – 10 ml water
Fig.12
• Close the lid with the mortar empty and press the
closing grip shut.
• Turn the rotary grip G to setting „0“ of scale H
• Switch on the machine, start the operation by
pressing the start button Q.
• Add the powder sugar through the right-hand
window opening I of the lid, then pour in the
water.
A pasty mixture is formed which does not adhere to
the inside wall or to the bottom of the mortar if the
scraper has been adjusted correctly.
See Fig.11 and 12
For visually checking look through the left-hand
window J
Adjusting the milling time
The milling time can be adjusted with the display
and operating unit E
• Switch on the RM200 with switch D. Fig.13
Preselecting the time
• Set the required milling time with the + / - buttons
O and P Fig.14
• Short pressing of the + or – button changes the
milling time by one minute in each case. With
longer pressing the display runs through
continuously.
Fig.13 If 99 is exceeded the display U shows two minus
signs: -- This setting means continuous operation
D
Incorrect
Correct