Sera PRECISION pH meter Manual De Instrucciones página 9

Disposal of the battery:
Important: Please take care for a professional disposal
of the batteries according to legal prescriptions.
Disposal advice: Please dispose only emptied batteries
into the collection containers at the store or the com-
munity. Batteries are empty if "BAT" is displayed or the
unit switches off.
Disposal of the unit:
Waste electrical and electronic equipment (WEEE)
must not get into domestic waste!
If ever the unit cannot be used anymore, the consumer
is legally obliged to hand in waste electrical and elec-
tronic equipment (WEEE) separately from domestic
waste, e.g. at a collection point of his community/his
district. This ensures that waste electrical and elec-
tronic equipment (WEEE) is expertly processed and
that negative effects to the environment are avoided.
Therefore electrical and electronic
equipment bears the following symbol:
Warranty:
When following the directions for use the sera pH
meter will perform reliably. We are liable for the free-
dom from faults of our products only within legal regu-
lations beginning with the purchase date, i.e. 24 months
(exception: 12 months warranty on the pH electrode).
We are liable for complete flawlessness at delivery.
Should usual wear and tear occur by use as intended
by us, this is not considered a defect. Warranty claims
Troubleshooting
Problem
Readout display drifts during
adjustment
No display shown
Incorrect values displayed
Unit cannot be calibrated
Display "BAT" appears
are also excluded in this case. This particularly refers to
the batteries.
In every case of a defect we recommend that you con-
sult the specialized retailer where you purchased the
unit. He will be able to judge whether it is actually a
warranty case. In case of sending the unit to us we will
unnecessarily have to charge you for occurring costs.
Any liability because of contract breach is limited to
intent or gross negligence. sera will be liable in case of
slight negligence only in case of injuries to life, body
and health, in case of essential contractual obligations
and with binding liability according to the product lia-
bility code. In that case, the extent of liability is limited
to the replacement of contractually typically foreseea-
ble damages.
Please note the additional warranty information (*).
Important warranty addendum (*):
• A new pH electrode is one that has been manufac-
tured a short time before. Electrodes will age even if
they are not in use. Depending on exact water com-
position, care and application range the expected life
span ranges from a few months up to several years.
• The BNC socket of the pH meter is suitable only for
connecting pH electrodes. Connecting other devices
to the BNC socket may damage the pH meter and will
void warranty.
• Warranty is void for electrodes that have been cor-
rupted by medications, colorants or chemicals, algae
deposits or dirt. Also, warranty is void in case of stor-
age in distilled water or test solutions, in case of
electrodes damaged by drying up and ones with
damaged cord, or broken electrodes, or ones that
have been destroyed by other improper use. Proper
use provided, however we grant 12 months warran-
ty on the electrode.
Possible cause
Electrode is dirty or covered with
algae
Electrode has been dried for long
period
CO or air bubbles reach the tip of
2
electrode
Electrode too old/defective, cable
defective
Electrode was/is immersed too
deep in the water
Water has entered the casing
Battery empty
Protection cap left on the electrode Remove protection cap
BNC plug is not connected properly,
or it is moist
Connectors are corroded
Too old or contaminated test solu-
tions
Too old or contaminated test solu-
tions
Electrode too old/defective
Adjustment knob damaged/over-
tightened
Battery is almost empty
9
Troubleshooting
Clean with sera cleaning solution,
then soak in sera care solution KCl
Soak electrode for 12 hours, then
recalibrate. Replace electrode if
electrode calibration is unsuccess-
ful
Avoid or move electrode to another
place in the aquarium
Replace pH electrode
Replace or move electrode to an-
other place in the aquarium
See your retailer
Replace battery
Loosen BNC plug and reconnect it,
dry plug and socket
See your retailer
Replace with new test solutions
Replace with new test solutions
Replace pH electrode
See your retailer
Replace battery