Siemens L-850D/E F-Range Style 2 Inset Lights Preventive, Maintenance Tasks Interval Check Action

L-850D/E F-Range Style 2 Inset Lights Maintenance

Workshop maintenance and preventive maintenance, continued

Preventive	In the table below you will find a checklist of preventive maintenance tasks:
maintenance
tasks
Interval	Check		Action
Daily	for lamp failure	Replace lamp and film disc cut-out (if any).
	for low light output	1.	Clean outer surface of prism if dirty.
		2.	Check for misalignment or presence of moisture
		in fixture.
		3.	Check for lamp ageing or displacement
Weekly	for obstruction in light output	Clean channel and prism surface
	channel
Monthly *	for presence of moisture or	1.	Open up light assembly.
	water (visual inspection on	2.	Clean, dry and inspect.
	condensation inside of
	prisms)	3.	Replace O-ring and other parts found defective.
Bimonthly	torque on hold-down bolts	Refer to the table “Screws Overview” on page 43
		for the tool to use, the torque to apply, and the
		eventual use of “Loctite” sealing compound.
Semi-annually *	for presence of water in	1.	Pump water from base.
	base	2.	Remove, dismantle and inspect light for water
		damage.
		3.	Cure the cause of water ingress.
After 800 hours	Replace lamps of complete	It is recommended to replace the lamps
of operation at	subsystems (e.g. R/W	systematically when 80 % of the useful life has
6.6 A	centreline)	been reached. At full brightness (6.6 A), it
		represents 800 hours, but, in practice, life spans of
		2000 to 4000 hours can be expected.
After snow	for damaged light fixtures	1.	Replace badly damaged fixtures.
removal		2.	Use a power broom for snow removal in the
		vicinity of the light fixture, if practical.
		3.	Follow recommended snow removal techniques
		described in FAA AC 150/5200-23 to avoid or at
		least to reduce damage to light fixtures.

* More frequently during rainy seasons.

 2002 Siemens Airfield Solutions, Incorporated	96A0266D	18
All rights reserved	Issued 2/02