eSSL EM lock Installation Manual page 5

7. Test operation. When all is operating properly, tighten all
Screws. Install anti-tamper plugs over socket head screw
Using a soft hammer to avoid damage to the housing.
Electromagnet and armature should be handled carefully.
Any damage to the surface such as paint, burrs, dirt and rust
may hinder bonding of surface and reduce holding power
SHOULD THE SURFACE PLATING BE DAMAGED:
Do not touch the lock face with your hands
Using a soft, clean, dry cloth or abrasive cloth (i.e., Scotch-Brite),
Clean lock face. Do not use sand paper.
Apply a coat of inhibitor to armature face also.
.