Cleaning The Instrument - MACHEREY-NAGEL PF-12 Plus Handbuch

10. Cleaning the instrument

Clean the housing of the instrument with a damp cloth. Wipe away splashes as soon as
possible. Clean and dry the cuvette slot with a soft cotton tissue. Generally, tubes and pho-
tometer always need to be kept clean. Clean the tubes with a lint-free cloth.
11. Troubleshooting
Error message
AD-overflow
Display stays dark
Instrument is turned on
but doesn't react
The correction of problems, which can occur with the PF-12
above mentioned errors in the table, changing the battery or the rechargeable battery and
the calibration of the device.
The user must not conduct any other maintenance; there are no other parts, which can be
changed at the point of interest. Opening the device will cause loss of the warranty claim.
12. Inspection equipment monitoring
The photometric accuracy of the PF-12
NANOCHECK solutions (REF 925 701), provided by MACHEREY-NAGEL. The appropri-
ate evaluation sheet is attached to the inspection equipment or can be downloaded on our
homepage www.mn-net.com.
50
Cause
Too much light at detector
Deviation between air-blank
and expected value,
dE > ± 10 °C or
dE > ± 10 mE
No power supply
Instrument crashed
Plus
09.12.2014
Plus
can be tested with the colored NANOCONTROL
Solution
• Please contact
MACHEREY-NAGEL for
calibration
• Remove tube
• Press if no tube is in the
cuvette slot
• Check if batteries / re-
chargeable batteries are
inserted or USB-cable is
plugged in
• Turn instrument off, wait
10 s, turn instrument on
photometer are limited to the