Dynalab A4000D - Manuel (Page 19)

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In the event of operating difficulties with
your Aquatron it is suggested that the
following basic checks are made.
(Please note that these checks
should only be carried out by
suitably qualified personnel).
If these checks fail to identify and
remedy the problem then you are
advised to seek the help of your supplier
or the Technical Services Department of
Bibby Sterilin Ltd.
1 Unit completely inoperative –
No mains green indicator light
on
Check the electricity supply to the
Aquatron and ensure that a fuse
has not blown at the plug or supply
fuse board. (This check should be
conducted by a QUALIFIED
ELECTRICIAN).
2 Heater(s) not on –
Mains green indicator light on
water flowing
a) Check the Aquatron switches are
in the correct mode, i.e.:
ON/OFF switch is in the ON
position.
CLEAN switch is in the OFF
position.
Check that the Reservoir
indicator light is NOT illuminated
and indicating a full collection
reservoir.
b) Check that the 15 amp fuses,
located inside the electrical
chamber of the cabinet, have
not blown. (This check should be
conducted by a QUALIFIED
ELECTRICIAN).
c) Check that the flow of cooling
water is sufficient.
A4000 requires a flowrate of at
least 1 litre/min.
A8000, A4000D requires a
flowrate of at least 2 litres/min.
If the flowrate is NOT sufficient
then:–
Check the mains water supply is
turned on.
Check the needle valve on the
right-hand side of the cabinet is
open.
Check the water inlet filter is not
blocked (see note 8).
Check the flow of water is not
impeded by blockages or
restrictions.
3 Heater(s) not on –
Water not flowing
Mains green indicator light on
Check that the thermostat has not
operated. Confirm this by pressing
the thermostat reset button located
inside the main chamber of the
cabinet.
If the thermostat has cut-out then
the cause should be identified at
once.
Check that the boiler contains
sufficient water.
Check that the plumbing
connections are not leaking.
Check that the stopcock on the
boiler level control WL48 is closed.
4 Heater in second stage boiler of
A4000D not on
Check the setting of the boiler level
control W4L2A. See page 12 for
details.
Check thermostat has not
operated. See notes under 3.
5 Water level in boiler too high –
Choking of condenser
Check that the flow of water into
the boiler is not excessive. Control
flow by adjusting needle valve on
right-hand side of cabinet.
Check that the coolant water drain
pipe falls away from the Aquatron
without restrictions or U bends.
If level of water in the second stage
boiler of model A4000D is too
high, then:–
Check setting of the float switch in
boiler level control W4L2A. See
page 12 for details.
6 Distillate quality low –
Check the condition of the boiler
and clean if heavily scaled.
7 Distillate collection reservoir
floods –
Check the location of the Reservoir
level control WLS inside the
reservoir. See page 13 for details.
Check that the WLS pipe
connections between the glass bell
and Aquatron are secure and air
tight.
8 Cleaning blocked water filters
Your Aquatron is fitted with a built-
in water filter to prevent the ingress
of particulate matter into the
plumbing system.
The filter can be examined and
cleaned if necessary by unscrewing
the black plastic screwcap which
secures the needle valve, item 18,
to the right-hand side of the
cabinet.
A similar filter is also incorporated
on the same side of the cabinet for
use with pre-treated water supplies.
Access is via the black screwcap
which secures the hose nozzle.
Fault Finding
A4000, A8000,
A4000D
Additional checks
for Aquatrons fed
with deionised or
pre-treated water
a) Boiler does not fill –
Check that supply of pre-treated
water is switched on.
Check input water filter on side of
cabinet is not blocked (see note 8).
Check Water Feed Conversion Kit
WCK/N is correctly fitted and
adjusted. See page 14 for details.
b) Heater(s) not on –
Check water level in boiler is above
the heating element.
Check Water Feed Conversion Kit
WCK/N is correctly fitted and
adjusted. See page 14 for details.