5Microlife OXY 300 EN
9. Cleaning and disinfecting
Use an alcohol swab or cotton tissue moistened with
alcohol (70% Isopropyl) to clean the silicone that touches
the finger inside of the device. Also clean the finger being
tested using alcohol before and after each test. Allow the
device to dry thoroughly before use.
10. Guarantee
This device is covered by a 2 year guarantee from the date
of purchase. During this guarantee period, at our discre-
tion, Microlife will repair or replace the defective product
free of charge.
Opening or altering the device invalidates the guarantee.
The following items are excluded from the guarantee:
Transport costs and risks of transport.
Damage caused by incorrect application or non-
compliance with the instructions for use.
Damage caused by leaking batteries.
Damage caused by accident or misuse.
Packaging/storage material and instructions for use.
Regular checks and maintenance (calibration).
Accessories and wearing parts: Battery.
Should guarantee service be required, please contact the
dealer from where the product was purchased, or your local
Microlife service. You may contact your local Microlife
service through our website:
www.microlife.com/support
Compensation is limited to the value of the product. The
guarantee will be granted if the complete product is
returned with the original invoice. Repair or replacement
within guarantee does not prolong or renew the guarantee
period. The legal claims and rights of consumers are not
limited by this guarantee.
The device cannot
be powered on.
1. No batteries or
low battery
power.
2. Batteries are
not installed
correctly.
3. The device
may be
damaged.
1. Replace the
batteries.
2. Remove
and rein-
stall the
batteries.
3. Contact
your local
Microlife-
Customer
Service.
The display
suddenly switches
off.
1. The device is
automatically
powered off,
when no
signal was
detected after
8 seconds.
2. The battery
power is too
low to operate.
1. Normal.
2. Replace the
batteries.
«Error 3» The red emission
LED is damaged.
Check the red
emission LED.
Description Symptom/
Possible causes
Solutions
«Error 4» The infrared emis-
sion LED is
damaged.
Check the
infrared emis-
sion LED.
«Error 6» The screen has
failed.
Contact your
local Microlife-
Customer
Service.
«Error 7» The emission LED
or reception diode
is damaged.
Contact your
local Microlife-
Customer
Service.
Never use abrasive cleaning agents, thinners or
benzene for cleaning and never immerse the
device in water or other cleaning liquids.
Description Symptom/
Possible causes
Solutions