wtw photolab S12, Operating Manual

Page: 15 / 20

Maintenance, cleaning, disposal
ba77048e01 02/2014
15
Maintenance - Changing the lamp
– Switch off the photometer and disconnect it from
the power line
– Carefully turn up the photometer and park it safely
– Screw off the lamp cover on the underside of the
photometer
Let the lamp of the photometer cool down.
– Pull out the plug
a
– Unscrew the screw
b
– Remove the lamp with its holder
c
by pulling it
gently upwards
Do not touch the new light bulb of the
photometer.
– Insert a new preset lamp and screw it tight using
the screw
b
– Connect the plug
a
of the new lamp
– Screw the lamp cover on again
– Set up the photometer again and connect it to the
power line
– Press and hold
3
– Switch on the meter (open the cover) and after the
following display appears, release
3
:
– Press
1
– Perform zero adjustment according to chapter
Z
ERO ADJUSTMENT
.
Cleaning - Actions to take if a cell is broken
Do not rotate the photometer to pour out
the liquid!
The photometer has a draining mechanism under the
cell shaft that, when operated correctly, prevents any
liquid coming into contact with electronic components.
– Switch off the photometer (close the cover) and
disconnect it from the line power
– Let the liquid drain off
– Carefully remove any pieces of glass, e.g. using
tweezers
– Carefully clean the cell shaft with a damp, lint-free
cloth
– Let the cell shaft dry
After it is dry, check the photometer:
– Perform a photometer monitoring (see section
P
HOTOMETER MONITORING
(AQA1), in the
F
UNCTIONAL DESCRIPTION
document [on CD-
ROM]).