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2.5.4 Procedure in event of Alarm function being tripped
When the alarm function has been tripped, the units for the relevant parameter flash and the
hydro
CHEM
beeps.
To check what has caused the alarm, press the
key. To re-set the alarm function, press the
key.
Automatic control will continue even while the alarm is activated, as the hydro
CHEM
will
attempt to correct the alarm condition.
The condition that caused the alarm function to trip must be rectified to avoid it being tripped again.
This may involve one or more of the following…
•
Check and re-calibrate the Conductivity and/or pH sensors to ensure the reading is actually
correct.
•
Extend the ON time if the pump rate is not high enough to keep up with chemical demand for
the current ON time.
•
Place the chemical addition point as close as possible to the take-up for the sample chamber.
•
The Conductivity and/or pH levels in the system may have changed too rapidly for the dosing
pumps to keep up. If this was due to a singular event (eg. top up tank with fresh water), then the
alarm may be ignored. If this was due to normal operation and none of the above suggestions
have worked, larger capacity dosing pumps may be required. Contact your distributor or the
TPS factory.
2.5.5 External Alarm Siren
An external alarm siren is available for alarm indication (part no. 130101). This may be particularly
useful if the
hydro
CHEM
is mounted inside a shed or pump room.
The external alarm siren simply plugs into the
Pump Sensor / Alarm
socket.
