Whelen P36P1L User Manual

®

ENGINEERING COMPANY INC.

MADE IN THE U.S.A.

51 Winthrop Road
Chester, Connecticut 06412-0684
Phone: [phone]
Fax: [phone]
Internet: www.whelen.com
Sales/Service e-mail: [e-mail]

MODEL LIST

Model Part # Style Application Weight* VDC* Input Current*

P36P1L 01-0771833-10 PAR36 Landing 0.52 lbs. 14VDC 1.36 Amps

P36P1T 01-0771833-15 PAR36 Taxi 0.52 lbs. 14VDC 1.36 Amps

P36P2L 01-0771833-20 PAR36 Landing 0.52 lbs. 28VDC 0.68 Amps

P36P2T 01-0771833-25 PAR36 Taxi 0.52 lbs. 28VDC 0.68 Amps

P46P1L 01-0790750-10 PAR46 Landing 1.00 lbs. 14VDC 2.60 Amps

P46P2L 01-0790750-20 PAR46 Landing 1.00 lbs. 28VDC 1.25 Amps

*NOMINAL

STC Manual

INSTALLATION PROCEDURES: The following

information provides guidelines for the installation of
the Whelen LED PAR Lights listed above. Please refer
to the OEM manual for your aircraft for specific
removal and installation instructions.

1. Place the lighting switch in the OFF position.

2. Inspect the housing, attachment points and
retainer for any signs of abnormal wear or
damage.

3. 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.

4. Place retainer screws in a safe place.

5. Remove the lamp from the holder.

6. 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.

7. 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.

8. While holding the lamp, loosen the screws
holding the attached wires. Remove each wire
from the lamp.

Aviation

9. 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.

10. 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.

11. 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.

12. Place the LED light into the housing ensuring
the key (of the assembly) matches the key of the
housing. 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.

13. Secure the retainer. Care should be taken to
tighten the screw only to the point the retainer
does not turn with hand pressure. Over­tightening may stress the polycarbonate lens of
the LED Light.

14. Place the light switch in the ON position and
verify proper operation of the Whelen LED lamp.

15. Update records in accordance with 14CFR

91.407. Determine that the landing or taxi light
characteristics have not been substantially
affected.

©2014 Whelen Engineering Company Inc.
Form No.14793 (070714)

Page 1

PAR46

(reference-only)

PAR36

(reference-only)

WWW. .COM

R

GND

Polarity shown

on label

+VDC

WWW.

+14V

+14V

GND

.COM

R

Polarity shown

on label

Alignment

Key

Alignment

Key

GROUND
Note - The ground
terminal is electrically
isolated from the case.

GROUND
Note - The ground
terminal is electrically
isolated from the case.

+VDC

Page 2

Periodic Inspections

INTERVAL DESCRIPTION ACTIONS NOTES

50 Hours • 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.

• Inspect lens for abrasion,
crazing or cracking.

100 Hours • 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.

• Inspect lens for abrasion,
crazing or cracking.

• Check Mounting,
connections and wire
integrity.

• Replace if all LEDs
are not illuminated.

• Replace the lens

• Replace if all LEDs
are not illuminated.

• Replace the lens.

• Adjust or replace as
required.

• The unit is not repairable.

• The unit is not repairable.

Annually • 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.

• Inspect lens for abrasion,
crazing or cracking.

• Check Mounting,
connections and wire
integrity.

• Replace if all LEDs
are not illuminated.

• Replace the lens.

• Adjust or replace as
required.

• The unit is not repairable.

Page 3

WWW.

+14VGND

.COM

R

Existing

Ground

Wire

Existing

Landing/Taxi Light

Switch

Existing

Aircraft
(+) VDC

Existing

Fuse or

Circuit Breaker

Wiring Diagram

Troubleshooting Procedure: The following information is to provide guidelines for troubleshooting the LED

Light Models listed on page 1.

Note: A circuit feature of the Parmetheus Plus is multiple parallel paths of LEDs and fixed current sources.
For this reason, a group of 3 or 6 LEDs may not be illuminated, while the remainder of the LEDs may be
operating at full intensity. This creates a situation where the light may be producing adequate light to perform
its intended function, but it should still be replaced.

In the case of no light output:

1. For a new installation, check the polarity of the wire connections. Check that the appropriate part has
been selected for the aircraft.

2. Check for the correct voltage at the light (+14V / 28V) terminal. Check for ground at the (GND) terminal.

3. Check the connections at the (+14V / 28V) and (GND) terminals.

4. Perform a bench check and replace if a failure is confirmed.

Refer to the aircraft manual for additional information.

Page 4

2

3

2

1

ITEM PART NUMBER DESCRIPTION

REPLACEMENT PARTS:
PAR36 (All Models)

LENS, CLEAR NON OPTIC PAR-36

SCREW, 4 X 3/8 PFH PLASTI-LOC SS W/NYSEAL

SCREW, 8-32 X 1/4 PH SLOT, BRASS, TERMINAL (NOT SHOWN)

GASKET, PAR36, BLK (NOT SHOWN)

68-3971486A30

15-045216-068

14-082202-041

38-0240197-00

QTY

4

3

11

2

3

2

1

ITEM PART NUMBER DESCRIPTION

REPLACEMENT PARTS:
PAR46 (All Models)

LENS, CLEAR NON OPTIC PAR-46 LED

SCREW, 4 X 3/8 PFH PLASTI-LOC SS W/NYSEAL

SCREW, 8-32 X 1/4 PH SLOT, BRASS (NOT SHOWN), TERMINAL

GASKET, PAR46, BLK (NOT SHOWN)

68-3971577A30

15-045216-068

14-082202-041

38-0240063-00

QTY

4

4

11

1

1

Alignment Tab

Alignment Slot

2

2

Alignment Tab

Alignment Slot

Lens Replacement Procedure:

Note: The procedure outlined herein is common to the PAR36 and PAR46 models.

1. Remove the PAR36/PAR46 light assembly from its installed location

2. Remove the phillips-head screws (Item 2) used to secure the lens to the light assembly. Note that there
are 4 screws used for this in the PAR46 and 3 in the PAR36.

3. Separate and remove the existing lens from the light assembly.

4. Install the replacement lens (Item 1) onto the light assembly, making sure that the lens’ alignment tab
engages the assembly’s alignment slot.

5. Secure the replacement lens to the light assembly using the existing hardware. Care should be taken
not to over-tighten these screws. Over-tightening may stress the lens.

Page 5