BUCHI Distillation Unit K-355 - Manual (Page 20)

5 Putting into operation
20 K-350 Operation Manual, Version F
ATTENTION
Make sure that the voltage on the socket corresponds to the voltage given on the type plate of the
instrument.
Always connect the instrument to an earthed socket. External connections and extension cables
must be provided with an earthed conductor lead (3-pole couplings, cable or plug equipment) as the
mains lead has a molded plug, thus avoiding risks due to inadvertent defective wiring.
The instrument cable must be well attainable at all times.
Make sure that no electric sparks form in the instrument or its surroundings as they might damage
the instrument.
5 .3 Reagent and water connections
a
b
c
d
e
a H
2
O inlet (for steam generator) from tank
b NaOH input from tank
c Cooling water outlet
d Cooling water inlet
e Drain to waste
Fig. 5.2: Reagent and water connections
All pumps are self-priming, no overpressure is necessary at the tanks.
5 .3 .1 Cooling water connection
Secure the cooling water hose with a hose clamp on both the instrument and the water connection
side. The water pressure should be at a maximum of 4 bar. The built in valve reduces the water flow to
1.2 liters per minute.
The flanged screw coupling for the water connection has a standard screw thread of G ¾”.