Purite SELECT NEPTUNE Analytical, Руководство пользователя, Страница: 67 / 90

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With the air bleed connector detached unscrew both of the water
•
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ver tighten the water connections as this may damage
•
arrow on the
•
To ensure there are no leaks, select Start and allow the unit to
recirculate. The
X symbol on the recirculation pump graphic will
flash indicating that water is recirculating.
econds.
•
With the unit running for a couple of minutes check for signs of
any water leaks around all of the filter connections.
•
If there are no leaks then simply replace the side cover.
•
You will now need to set the filter expiry date. To do this follow
the on screen prompts.
7.4 REPLACING 0.2 µm POINT OF USE FILTER.
(Life Science/Ultimate only)
Fig-19 Location of Point of Use Filter
•
Fitting of a new filter can be
carried out without turning the unit
off.
•
Simply hold the body of the
clockwise.
Once unscrewed dispose of the
ve the new one
disposal.
e
car
f the
connections.
With all of the connectors detached pull the filter from its
retaining clip and discard.
•
Un-pack the new filter and reconnect the air bleed line and water
lines.
DO NOT o
the fittings.
NB: Check that the filter has been refitted with the
side of the filter pointing upwards.
•
In order to bleed air from the new filter press the U V up /
down buttons on the front Keypad together. Repeat this after 10
s
capsule and un-screw
•
filter and remo
from its packaging. Refer to
Section 9.3 for advice on
•
Wind about 4 turns of PTFE tap
around the thread on the filter.
Screw the new filter anti-clockwise back into the dispense valve. (NB:
Be
eful not to cross thread the filter)
•
The bleed nozzle should point out to the right hand side o
unit.
•
To bleed the filter of air, open the bleed screw a few turns,
remove the lower bell-housing cap and dispense approx 500 mls
of water, tapping the filter gently.
•
When all of the air has been purged close the bleed screw.
Select Neptune Manual Iss: B