Hanna Instruments HI 98106 - Manual (Page 2)

CONDITIONING
• Remove the cap.
• To activate the electrode, immerse it in HI70300
storage solution for 2 hours.
CALIBRATION
• Immerse the tester in a pH buffer solution (for
example, HI 7007 pH 7.01 buffer).
• Allow the reading to stabilize
and with the supplied screw-
driver adjust the calibration
trimmer to read "7.0" pH.
The calibration is now complete.
OPERATION
• Remove the protective cap and
turn the Champ ® on, by
sliding the ON/OFF switch on
the top of the meter.
• Immerse it into the solution to
be tested without exceeding
the maximum immersion level.
• Stir gently and wait for the
reading to stabilize.
• After use, switch the meter off, rinse the
electrode with water and store it with a few
drops of storage (HI70300) or pH 7 (HI7007)
solution in the protective cap. Always replace
the cap after use.
NEVER USE DISTILLED OR DEIONIZED WATER FOR
STORAGE PURPOSES.
• Large differences in pH readings (±1 pH)
could be due to lack of calibration or dry
electrode.
MAINTENANCE
The sensor should be kept moist at all times. For
this purpose, always keep wet the tissue inside
the protective cap.
In case of erroneous readings even after an
accurate conditioning and calibration, the refer-
ence junction might be contaminated or clogged.
Pull out 2 mm (1/8'') of the
cloth junction to renew the
electrode reference (it is rec-
ommended to cut the cloth
leaving always at least 2 mm
-1/8'' over the reference com-
partment) and recalibrate the
meter.
The cloth junction can be pulled out approxi-
mately 20 times. After that, the electrode should
be replaced.
ELECTRODE REPLACEMENT
For replacing the electrode contact your Dealer or
the nearest Hanna Service Center.
BATTERY REPLACEMENT
When display fades the batteries must be re-
placed. Slide off the battery compartment cover
and replace all four 1.5V alkaline batteries while
paying attention to the correct polarity.
Batteries should only be replaced in a nonhaz-
ardous area using the battery type specified in
this instruction manual.
WARRANTY
This meter is guaranteed for one year against defects in
workmanship and materials when used for their intended
purpose and maintained according to instructions. This war-
ranty is limited to repair or replacement free of charge.
Damages due to accident, misuse, tampering or lack of
prescribed maintenance are not covered. If service is re-
quired, contact the dealer from whom you purchased the
instrument. If under warranty, report the model number,
date of purchase, serial number and the nature of the fail-
ure. If the repair is not covered by the warranty, you will be
notified of the charges incurred. If the instrument is to be
returned to Hanna Instruments, first obtain a Returned Goods
Authorization Number from the Customer Service depart-
ment and then send it with shipment costs prepaid. When
shipping any instrument, make sure it is properly packaged
for complete protection.