Acorn Meridian 3792 Manuel - Page 10

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Acorn Meridian 3792 Manuel
TROUBLE SHOOTING FOR 9 VOLT DC SENSOR OPERATED VALVES
Normal Valve Function: 9 Volt DC sensor operated valve has flow time of 90 seconds maximum. To reactivate,
the user must move out of and return to the sensing area.
CONDITION: WATER DOES NOT FLOW
Indicators:
Sensor Flashes Continuously
Every 2 Seconds When Hands
are Within Range.
Sensor Does Not Flash When the
User's Hands are Within Range.
Sensor Flashes Once When
User's Hands are Within Range.
CONDITION: FALSE TRIGGERING;
WATER FLOWS CONTINUOUSLY
Indicators:
Sensor Flashes when User's
Hands are Within Range.
Sensor Does Not Flash when
User's Hands are Within Range.
CONDITION: WATER FLOWS
CONTINUOUSLY BUT STOPS
WHEN HANDS ARE WITHIN RANGE
Indicators:
Water Runs Continuously When
Sensor Not Activated. Sensor
Flashes When Hands are Within
Range and Water Shuts Off.
MINIMUM / MAXIMUM WATER PRESSURE (PSI) 30 / 100. MAXIMUM WATER TEMPERATURE 130°F.
L1000802
Probable Cause:
Low Battery Warning.
Circuit Breaker Tripped.
Battery Completely Used Up.
Defective 9VDC Transformer.
Transformer Polarity Crossed.
Unit is in "Security Mode" After 90
Seconds of Constant Detection.
Range is too short.
Range is too long.
Sensor is Picking Up a Highly
Reflective Surface.
Defective Sensor.
Stops or Water Main Closed.
Bad Sensor to Solenoid Connection.
Debris or Scale in Solenoid
Assembly.
Debris or Scale in Diaphragm.
Debris or Scale in Strainer.
Probable Cause:
Debris or Scale in Diaphragm.
Diaphragm is Defective or Torn.
Sensor is Dirty or Covered.
Range too long or Highly Reflective
Surface, Sunlight, Bright Lights etc.
are Triggering Sensor.
Probable Cause:
Solenoid Polarity Crossed.
10 of 12
Solution:
Replace Battery.
Reset Circuit Breaker.
Replace Battery.
Replace Transformer.
Replace Transformer (Sensor may be
Damaged and Need Replacement).
Remove Sources of Detection and Wait
30 Seconds Before Checking.
Increase Range.
Decrease Range and Wait 30 Seconds.
Eliminate Cause of Reflection and Wait
30 Seconds Before Checking.
Replace Sensor.
Open Stops or Water Main.
Ensure Wires make Proper Contact.
Remove Solenoid, Pull Out Plunger and
Spring, and Clean with Scale Remover
Solution or Pressurized Air.
Remove Diaphragm and Clean
Remove Strainer and Clean.
Solution:
Remove Diaphragm and Clean.
Replace Diaphragm.
Clean or Uncover Sensor and Wait 30
Seconds.
Decrease Range and Wait 30 Seconds.
Eliminate Cause of Reflection or Correct
Lighting Problem.
Solution:
Disconnect Solenoid and Reverse
Polarity.
Rev. H – 03/07/05