APG PWS Paddle Wheel user manual - Manual (Page 11)

Rev. A1, 4/07 PWS Series
11
Automation Products Group, Inc.
APG...Providing tailored solutions for measurement applications
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• Maintenance
When cleaning and checking the container, free the paddle and shaft from
deposit. The unit which detects the level of sticky materials or is installed in a
humid location must be cleaned at periodic intervals.
Tighten the housing cover and cable entry to protect the unit from rain,
splashing water, etc.
• Make sure that the power supply is turned off .
• Remove the housing cover (by turning it counterclockwise).
• Remove lead wires by melting the soldered area with a soldering iron.
• Remove the micro switch (loosen one screw).
• Install the replacement switch and tighten the screw.
• Re-solder lead wires. Refer to fi gure below.
• Check wiring and operation.
• Reinstall and tighten the housing cover.