Dynalab 3999-0000 - Manuel (Page 5)

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14. Connect the distillate outlet of the condenser to a
suitable collection reservoir, using a suitable length of
9mm tubing.
A glass reservoir system is available from Bibby Sterilin
Ltd. (Catalogue No. WR20). Please contact the sales
office for details.
15. Replace the end panel on to the unit.
16. Take the reservoir control WLS and push the free end
of the rubber tubing onto the nozzle on the left hand
end of the unit - see Figur e 1.
Use the clip provided to mount the glass pressure bell
in the neck of the distillate r eservoir.
Adjust the height of the pressure bell so that the open
end is approx. 140mm below the maximum distillate
level.
ELECTRICAL INSTALLATION
THIS EQUIPMENT MUST BE EARTHED!
The electrical installation should be carried out by a qualified
electrician. The following method is recommended.
The equipment is supplied with 1.5m of PVC/PVC flexible,
triple core, circular cable with the following specification,
1.5mm
2 to BS 6500 or equivalent and <HAR> or BASEC
approved.
The cable gland is designed to accept cable whose diameter
is >7.0mm and <10.5mm. It is r ecommended that, at the
connection to the mains electrical supply, there is fitted a
double pole isolation switch with a continuous curr ent
carrying capacity of 15 amps at 250V, and that overcurrent
protection is provided by either a double pole appr oved fuse
rated at 15A, 250V, or a double pole approved circuit
breaker of similar rating.
These devices should be sited near to the equipment and be
clearly marked “Disconnect device for ‘Distinction’ W ater
Still”.
Cable connections are shown in Figures 3a and 3b.
Connect to the line supply noting that the wir es in the
instrument lead are coloured in accordance with the
following code:
Blue - Neutral
Brown - Live
Green & Yellow - Earth
Mains Cable Replacement
If the mains cable requires replacement, only cable with the
specification given above should be used.
For live and neutral leads use bootlace crimps, size 1.5mm,
with a performance conforming to BS 4G178 part 1, 1984
and part 2, 1986.
For the earth lead use 1.5mm, M4 eyelet crimps with a
performance conforming to BS 4G178 part 1, 1984 and
part 2, 1986. A suitable crimp tool should be used.
OPERATION
1. Turn on the cold water supply and adjust the flow to
approx. 60 l/hr. Observe that the water flows via the
condenser and into the boiler. Wait until the boiler has
attained its correct operating level and make sure that
the excess water is flowing freely to drain.
2. Switch on the heating element. The on/of f switch is
located on the front panel - see Figure 1.
3. After a few minutes the water will start to boil and
distillate will emerge from the condenser. With new
glassware, or after cleaning, it is advisable to allow this
to run to drain for approximately 30 minutes before
beginning collection.
4. To turn off the still, first tur n off the heating element
but allow cooling water to continue for a further 10
minutes to allow the Still to cool.
WARNING!
Do not use this equipment to distil any liquid
other than water.
SAFETY CUT-OUTS
The Distinction Water Still is protected by the following
safety cut-outs:
1. Reservoir level control
This should be positioned in the collecting r eservoir
(see “Assembly”) and turns off the heating element
when the reservoir is full.
2. Condenser thermostat
Mounted in the condenser’s distillate outlet. Should
the water supply be interrupted steam will begin to
emerge from the condenser causing the thermostat
to operate and turn off the electricity supply to the
heating element.
3. Boiler thermostat
Mounted in the boiler above the heating element.
Should the boiler water level fall and expose the
element the thermostat will operate and tur n off the
electricity supply to the element.
After operation of either of the thermostats, normal
operation may be resumed by resetting the thermostat by
means of their respective reset buttons mounted on the
right hand end panel of the electrical compartment.
Remove the black plastic cover and then pr ess the red
button - a slight click will be hear d if the thermostat had
operated.
Before resetting either thermostat the still
should be allowed to cool completely and the
cause of the cut-out operation identified and
rectified.
If the thermostats continue to operate, consult a qualified
electrician or the Technical Service Department of Bibby
Sterilin Ltd.