Johnson Level & Tool Mfg. 40-6264 - Manual

L56 MSHA Alignment Laser Specifications and Operation Instructions.
Warning
Do Not Direct The Laser Light Into The Eye!
Power: 635 nm, Class IlIa Diode Laser
<5 mw Maximum Output
2 Size “AAA” Alkaline Batteries
Battery Life: 12-15 hours continuous
use
Range: >500 ft
MSHA Approval Number: 2G-4022-0 Permissible
Constructed from solid brass with an "0" ring seal, the L56 Mining
Alignment Laser is water tight to +1atmosphere. Integral mounting is
provided for use with spad or other style support. The Laser Beam is
concentric to the outside diameter of the battery compartment. This
product is tested for Intrinsic Safety and is MSHA approved for use in
Methane/Air mixtures only. When properly maintained, it is MSHA
approved for use with 1.5 volt "AAA" Duracell MN2400 or Eveready E92
batteries. Replacement of the batteries must be performed in fresh air
ONLY. When replacing the batteries, the negative end goes into the
laser first. All positive ends must point towards the switch cap. All
batteries must be replaced at the same time. Never attempt to reuse
batteries. Do not mix batteries of different manufacturers or types.
OPERATION
The laser is shipped with an insulator to prevent the batteries from
powering the unit and discharging during shipment and storage. It must
be removed from the under the switch cap prior to use. To remove it,
unscrew the switch cap completely, remove the cardboard insulator and
replace the switch cap. Operation of the laser is simple and
straightforward. Two hanging brackets with adjustable tabs are integral
on the laser top and are used to suspend the laser from two spads or
some other means of sturdy roof support. Bailing wire, chain, rope or
other means of suspension can be used to hang the laser and provide a
means of adjusting for elevation. This laser has sufficient mass to help
prevent it from swaying in entries with high airflow. The end cap is turned
in the clockwise direction until the laser is powered. Do not over tighten.