6
6.2
For tough
contaminants, remove the sensor shield, soak the probe in Apera’s cleaning
solution or detergent water for 30 minutes. Then use a soft brush to remove the
contaminants. Afterwards, soak the probe in 3M KCL soaking solution for at least 1
hour. Rinse it off, then re-calibrate the tester before using again.
7
Probe Storage
7.1
Under regular usage (daily or weekly use), make sure there are several
drops 3M KCL soaking solution in the probe cap, and tightly close the cap
with the O-ring.
7.2
For long-term storage (you are not going to use the product for more than a
month), add 3M KCL soaking solution to the Fill line in the cap and store the
probe in it. Close the probe cap tightly with the O-ring.
If you find white crystals inside or outside the probe cap, it is perfectly normal. It is
the 3M KCL soaking solution that crystalizes over time by its nature. Just rinse them
off and add in new soaking solution. This chemical is not poisonous nor dangerous,
and the probe’s performance will not be affected at all.
8
Battery Replacement
①
Pull up the battery cap (might take some force).
②
Slide the battery cover along the OPEN arrow to open the cover.
③
Open the battery cover.
④
Insert the batteries
(ALL POSITIVE SIDES FACING UP)
.
⑤
Press down the battery cover and hold it.
⑥
Slide the battery cover along the LOCK arrow to lock the cover.
⑦
Close the battery cap. Make sure to push it all the way down. The tester’s waterproof
rating may be compromised if the battery cap is not tightly closed.
