Hoefer RCB20-PLUS - Manual (Page 23)

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7. Operating Instructions
7.1 Power Connection
1
Ensure that the line voltage matches the supply
voltage specified on the identification plate.
Deviations of ±10% are permissible.
2
Connect the unit to a grounded mains power
socket only.
3
To turn unit off: both units must be turned off
using the main power switches on each unit.
7.2 Filling the Water Bath
Fill the water bath with an approved liquid until
30 mm below the top of the bath. If the operating
temperature is below 4 °C, the refrigerant should be
a 1:1 mixture of water and ethylene glycol. If the
operating temperature is between 95 °C and 100 °C,
the refrigerant should be bath fluid with a boiling
point over 100 °C.
Caution! Hoefer, Inc.
disclaims all liability for
damage caused by incorrect
line voltages.
Note: The refrigeration unit
and main control unit each
have separate power cords,
both units must be plugged
into
a grounded external
power source to operate the
water bath.