WAT P36G3L LED landing Lights and Taxi Lights User Manual
- June 5, 2024
- WAT
Table of Contents
WAT P36G3L LED landing Lights and Taxi Lights
Installation
WARNING: This product can expose you to chemicals including Methylene Chloride which is known to the State of California to cause cancer, and Bisphenol A, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
Model List
Model| Part #| Style| Application| Weight| VDC| Input
Current*
---|---|---|---|---|---|---
P36G3L| 01-0772102-10| PAR36| Landing| 0.8 lbs.| 14/28VDC| 3.8/1.9 Amps
P36G3T| 01-0772102-15| PAR36| Taxi| 0.8 lbs.| 14/28VDC| 3.8/1.9 Amps
INSTALLATION PROCEDURES:
The following information provides guidelines for the installation of the WAT LED PAR Lights listed above. Please refer to the OEM manual for your aircraft for specific removal and installation instructions.
- Choose the appropriate replacement light assembly. Note: It is not required to change all PAR lights or Taxi lights to the new LED PAR lights2. Place the
- lighting switch in the OFF position.
- Inspect the housing, attachment points and retainer for any signs of abnormal wear or damage.
- Loosen or remove the hardware holding the lamp in place. Take steps to ensure the retainer doesn’t fall from the lamp assembly before it is ready to be removed.
- Place retainer screws in a safe place.
- Remove the lamp from the holder.
- Note there are two wires connected to the (existing) lamp. Using a multi-meter, identify the negative wire by measuring continuity to ground. Place a piece of black electrical tape around the wire identified as ground. This is your negative lead.
- Identify the positive wire as the remaining wire lead. The LED light assembly is polarity sensitive, however you will not damage the unit by reversing the polarity.
- While holding the lamp, loosen the screws holding the attached wires. Remove each wire from the lamp.
- Secure the LED Light, note the terminal markings for positive and negative, attach the negative marked wire to the negative side terminal post of the LED Light.
- Attach the positive wire to the positive side terminal post. Remove tape or temporary placard which identified the polarity of the wiring inside the housing.
- If required, install the rubber gasket included with your new LED Light around the LED Light assembly. A light application of a common hand soap on the rubber may aid in its fit into the light housing.
- Place the LED light into the housing making sure the FLYWAT.COM is on the bottom. Proper orientation of the lamp is necessary for beam orientation to be left and right of centerline while in operation. For a Taxi light, the ‘lines’ of the inner optic should be orientated vertically to produce a horizontal light beam.
- Secure the retainer. Care should be taken to tighten the screw only to the point the retainer does not turn with hand pressure. Over-tightening may stress the polycarbonate lens of the LED Light.
- Place the light switch in the ON position and verify proper operation of the WAT LED lamp.
- Determine that the Landing or Taxi light characteristics have not been substantially affected, per 14CFR 23.1383/27.1383.
- If required, update aircraft records utilizing FAA Field Approval (Form 337) or equivalent.
Typical PAR36 LED Light
Periodic InspecTion:
| INTERVAL | DESCRIPTION | ACTIONS | NOTES |
|---|
Annually
(unless the OEM specifies a shorter interval
| •Perform function check. Observe that all LEDs are illuminated. Note: To reduce eye strain during LED inspection, use an optical filter such as dark glasses or a blue
covering dome.
| •Replace if all LEDs are not illuminated.| The unit is not repairable.
| •Inspect lens for abrasion, crazing or cracking.
For additional lens maintenance detail see
SAE ARP5637.
| •Replace if there is excessive scratching, pitti ng, discoloration or
cracking.|
| •Check Mounting, connections and wire integrity.| •Adjust or replace as
required.|
Troubleshooting Procedure:
The following informaon is to provide guidelines for troubleshoong the LED Light Models listed on page 1.
Wire Diagram 
In the case of no light output:
- For a new installation, check the polarity of the wire connections. Check that the appropriate part has been selected for the aircraft.
- Check the connections at the positive (+) and ground (-) terminals. Check that both wires are firmly attached to the light and that the contacts are clean.
- Check for the correct voltage at the light (+9 to 32VDC) terminal. Check for ground at the (GND) terminal.
- Perform a bench check and replace if a failure is confirmed.
- Refer to the aircraft manual for additional information.