Dynalab A4000D - Manuel (Page 16)

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Each Aquatron water still is supplied
with a RESERVOIR LEVEL CONTROL,
WLS, fig. 11. This automatically switches
off the heating elements and coolant
water supply when the distillate
collection reservoir is filled with distilled
water.
Note that, the control is fitted with a
‘delay timer’ which switches off the
coolant water supply approximately 7
minutes after the heating elements. This
is to allow time for the heaters to cool
and for boiling to cease.
The control also automatically switches
on the heating elements and coolant
water supply when the level of distillate
in the collection reservoir falls.
It is possible to fit the glass pr essure bell
of the control to most types of reservoir
and container by means of a metal clip
WFC/1 which is provided.
Alternatively, Bibby offer a purpose
designed reservoir collection system
WR20 fitted with a special adapter to
hold the bell, see fig. 12.
Fitting the Reservoir Control WLS to
Collection Vessels
1 Position the distillate collection
reservoir in a suitable location. This
should be below the water still so
that the vinyl rubber tubing
transporting the distilled water
from the still can fall down to the
reservoir without restrictions, kinks
or U bends.
2 Take the Reservoir Level Control
WLS and connect the free end of
the rubber tubing to the nozzle,
item 13, of the reservoir pressure
switch located on the side of the
cabinet.
3 Use the metal clip to fit the glass
pressure bell inside the distillate
collection reservoir. Refer to fig. 11.
4 Position the bell so that the open
end is 140mm below the desired
distillate level.
Bibby offer a purpose designed reservoir
system for the collection of distilled
water from your Aquatron. This
comprises:–
WR20 – 20 litre Pyrex glass reservoir
complete with Rotaflo stop-
cock and special lid.
WS20 – Reservoir stand, 43cm high
for use with WR20.
The lid of the reservoir has a side arm
for connection to the distillate feed fr om
the Aquatron and a vent fitted with a
bacteriological filter to maintain the
purity of the water. A screwthread fitting
is also provided to support the Reservoir
Level Control WLS.
Location & Assembly
1 Locate the reservoir in a position
which is below the level of the
water still.
2 Fit the Rotaflo drain cock to the
lower ground glass socket of the
reservoir and secure with the plastic
joint clip.
3 Take the bacteriological filter and
connect this to the top of the glass
feed-pipe using the vinyl tubing
provided. Fit the feed pipe and
filter into the reservoir lid via the
large screwcap fitting.
4 Fit the Reservoir Level Control WLS
to the lid via the small scr ewcap
fitting. Note that the stem of the
glass pressure bell should extend
approximately 50mm above the
screwcap (see illustration).
5 Place the assembled lid into the
socket of the reservoir.
6 Take the rubber tubing from the
reservoir level control WLS and
connect to the small plastic nozzle,
item 13, on the side of the water
still cabinet.
7 Take the vinyl plastic tubing from
the distillate outlet of the water still
and connect to the side-arm of the
feed pipe on the reservoir lid.
Ensure that the tubing falls down
to the reservoir without any
restrictions, kinks or U bends.
Distillate
Collection
A4000, A8000,
A4000D
Bibby Reservoir
System
WR20 & WS20
Fig 11
WLS Reservoir level control
140mm
Fig 12
Reservoir WR20 and Stand WS20
To pressure switch
(Item 13 on Aquatron)
Distillate
from
Aquatron
50mm
WLS