Airfield Lighting Systems UK Limited
Aviation House, Russell Gardens, Wickford
Essex SS11 8BF Tel +44 1702 547866
www.alsukltd.co.uk
7.
In order to bond the light fixture to ground, use the
supplied screw to attach the braided ground strap to the
grounding point on the light fixture. The grounding point is
indicated by a grounding symbol and located on the
bottom side.
3.3 Installation Bolt Torque
●
Use fully threaded A2-70(or A4-70) M10x1.5 bolts .
●Use Model TL10 Top-Lock lock-washers .
●Mounting base holes must be degreased, cleaned, and dried
prior to bolt installation.
●Base-to-fixture mating surfaces must be degreased, cleaned, and dried prior to
installation. .
●Install the M10 bolts with lock-washers per lock-washer manufacturer’s guidelines.
●See Section 2 for Top-Lock installation guidelines.
●Achieve a full final torque of 26.9 Nm.
（
Use GTP600 lubricants to 33 Nm.
）
with a
calibrated torque wrench.
●Impact wrenches are not recommended as installation tools.
●Check torque and re-torque all bolts within 2 weeks of initial installation.
●If other lubricants or thread locking compounds are used (not recommended), torque
must be recalculated based on K factor provided by lubricant or compound
manufacturer.
●New bolts and lock-washers shall be used each time a light unit is removed from its
base.
3.4Top-Lock Installation Guidelines
Step1: Hand tighten to ensure that 2-3 threads extend beyond the nut on through-bolt
applications.
Step2: Tighten each bolt to 9 Nm.
（
Use GTP600 lubricants to 11 Nm.
）
torque following
the pattern as shown below.
The grounding point
