Hach PHOSPHAX sigma Manuel D'utilisation De Base page 130

Drain tray moisture sensor
The drain tray is designed so that it drains any outflowing liquids
immediately to the moisture sensor, which is located at the very back in
the center. As soon as the two electrodes of the moisture sensor register
a strongly increased conductivity, the measurement operation is
switched off for safety reasons. It can only be started again after the
error (leak at hoses, digestion unit etc.) is rectified, the electrodes are
dry again and the error has been acknowledged in the [STATUS] menu
section Software menu system. The chemicals in the collection tray can
be picked up with soft blotting paper.
Refrigeration system
The durability of the reagents is only ensured at temperatures below
10 °C. For this reason, the device has a refrigerator. This system is easy
to handle and requires no maintenance. Commissioning takes place by
plugging in of the mains connector. To maintain the required temperature
range, the controller on the thermostat of the cooling machine must be in
position 5–6.
C A U T I O N
Position 6–7, or very cold installation rooms, can cause excessive cooling
(possibly even freezing).
The refrigerator compressor is protected by the PHOSPHAX housing and must
not be exposed either to spray water or water jets. The control cables for the
refrigerator valves are routed from the back into the housing of the measurement
device and connected to the fan plate.
English 130