Important safety information
9
Operating requirements
•
Wait at least 5 seconds before switching the instrument on and
then off again at the main switch.
•
Problem-free operation of the Testomat
®
device is only possible
when using Heyl Testomat
®
regents and only within the pH range
of 5
– 9.5! Using external products may invalidate the guarantee.
•
Only operate the device within the scope of parameters specified
on page 50.
•
When operating without the instrument cover (Art. No. 37798), only
protection class IP 40 is valid.
•
Please note that oxidizing agents other than chlorine, e.g. ozone,
chlorine dioxide or hydrogen peroxide, are also recorded and in-
crease the measuring result!
•
If the test water contains more than 20 mg/I CO
2
(carbonic acid),
erroneous evaluations cannot be ruled out. In this case, use an irri-
gator (e.g. optional accessory from Heyl Co.).
•
The water to be measured must be clean and free of bubbles!
•
The concentrations of disruptive ingredients can be determined
with colorimetric TESTOVAL
®
test comparators from Gebr. Heyl.
•
Careful handling of the device enhances the operational safety and
the service life! With this in mind, perform a visual inspection of the
device at regular intervals as follows:
o
Has the expiry date of the indicator elapsed?
o
Are the hose connections of the dosing pump leakproof?
o
Is there any air in the dosing hoses?
o
Are all water connections leakproof?
o
Is the device excessively soiled?
o
Are the measuring chamber and drain channel/drain hose
clean?
•
Problem-free operation is contingent on regular maintenance!
Maintenance and care instructions can be found in the
section on page 40.
•
Indications of problems can be found in the
section on page 35.
CAUTION
!
NOTE
