Unitec Wash Select II With WashPay Integration Operations Manual - Manual (Page 82)

W A S H S E L E C T I I
Document Number: WS21058 70
Sensitivity Control
Knob, this is
numbered from 1-10.
Figure 22. Proximity Sensor Power Block
You should test this adjustment with and without a vehicle in front of the unit. The normal
sensitivity setting range is between 6 and 10 on the dial.
4.7.2 Adjusting Sensitivity with the 100% Range Setting
The proximity sensor block is shipped pre-set on the 25% range setting. If you find that this
does not work for you, you may adjust the range setting on the power block. It is suggested
that this adjustment be performed in bright sunlight. Follow the steps below to adjust the
range setting.
1. Remove the power block from the Wash Select II.
2. Set the dial on the power block to the zero setting.
3. Using a small flat-head screwdriver, remove the small plastic cover below the dial
on the power block.
4. Flip dipswitch 1 to the up position.
5. Replace the power block.
6. With no vehicle in front of the unit, turn the dial until the relay light (LED) comes
on. You must always keep the dial below this setting.
7. Next, you must turn the dial toward the lower numbers until the relay light turns off
and then turn the dial one more notch to the left.
It may be necessary to adjust the dial again at a later date if the proximity block "Relay" light
comes on when there is no vehicle present. Too high of a gain setting will give a continuous
false vehicle detection signal.
4.7.3 System Settings Affecting Proximity Sensor Operations
The following Wash Select II system settings will have an effect on how the Proximity Sensor
operates.
Document Title: WSII Operations Manual ver 6.10