SolaStat™-1-3 Installation Guide
Version 1.1 – April 2013 Page 26
SENSOR MAINTENANCE
Lengthening
Sensor Wire
The sensor wire can be lengthened within certain guidelines:
The absolute maximum cable length is 100m (328 feet).
Over 20m (66 feet), care must be taken to avoid electrical interference
being picked up.
In noisier electrical environments, screened cable may be required.
Firmly attach wires to each other by either soldering (heatshrink over
each joint) or by quality screw terminals. Joints must be kept dry.
Wire normally used for lengthening is twin 0.5mm
2
(20 AWG) stranded
speaker wire.
Dangerous Voltages may be present. The SolaStat
TM
has no user
serviceable parts.
Protective enclosure must only be opened by qualified personnel.
Remove ALL power sources before removing protective cover.
Replacing a
Sensor
If a damaged sensor needs to be replaced then the cover of the enclosure
will need to be opened unless the choice is made to join the wires externally
(see Lengthening Sensor Wire section above).
Remove the mains power supply. Make sure no other power source is
feeding back through other connections.
1. Remove the four screw covers on each corner of the lid of the enclosure.
This will require a fine tipped tool such as a screw driver. Be careful not
to damage the lid. Always press the tool away from you to avoid injury if
you slip.
2. Remove the four screws that hold the lid on.
3. Unscrew the damaged sensor from the terminal block.
4. Loosen the cable clamp for the sensor leads.
5. Carefully pull the wire back through the opening in the bottom case.
6. Thread the new sensor wire back through where the old one came from.
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