Important safety information
10
Operating requirements
Problem-free operation of the Testomat
®
device is only possible
when using Heyl Testomat indicators and only within the pH range
of 4 – 10.5! Using external indicators may invalidate the guarantee.
Only operate the device within the scope of parameters specified
under "Technical Data".
For Testomat
®
devices used to monitor water hardness, large
quantities of heavy metal ions in the hardened water may disturb
the color reaction, particularly
o Iron over 0.5 mg/I
o Copper over 0.1 mg/I
o Aluminum over 0.1 mg/l (brown-red color indication).
If the test water contains more than 20 mg/I CO2 (carbonic acid),
erroneous evaluations cannot be ruled out. In this case, use an ir-
rigator (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 Heyl Co.
In the event of
o excessive carbonate hardness
o the presence of disinfecting agents
o the presence of silicate (used to protect pipes), the measur-
ing chamber may become soiled, which over time
may lead to erroneous evaluations
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 door of the device carefully closed?
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 "Servicing
and maintenance" section.
Indications of problems can be found in the "Error messag-
es/troubleshooting" section.
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