Chemglass CG-2037-E - Manual (Page 6)

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4. To change the speed range from high speed to low speed or low speed to high speed,
the motor must be brought to complete stop.
“I” is for low speed range; “II” is for high
speed range (See Figure 2). To change the speed range from high to low, turn shift
plate (item #3, in Figure 1) counterclockwise (looking down from the top) until in place,
then pull down, and finally turn clockwise to reset it. To change the speed from low to
high, turn shift plate (item #3, in Figure 1) counterclockwise until in place, then push up,
and finally turn clockwise to reset it. When it’s in place you can hear the “click” of the
Press Fit Ball Plunger.
NOTE: If the unit has not been used for some time, a knocking noise may be heard when
switching on. This is due to the preload on the friction lining of the friction wheel drive. This
has no detrimental effect on the function of the unit, and the knocking noise will disappear
after a short running-in period.
Maintenance and Service:

Ensure Stirrer is unplugged before cleaning

Do not allow moisture to get into the appliance when cleaning

Wear protective gloves during cleaning the devices
Use to remove:
Dyes isopropyl alcohol
Construction materials water containing tenside/ isopropyl alcohol
Cosmetics water containing tenside/ isopropyl alcohol
Foodstuffs water containing tenside
Fuels water containing tenside
If a motor failure happens, check whether the power switch is on and the unit is plugged in.
Verify that the power outlet is providing the correct voltage. If these faults are eliminated and
the motor failure remains, contact CG Life Sciences for service. The unit should not be
opened for any reason without proper authorization.
Figure 2