Equipment Safety - O. Thompson Microflite Ultra 2000 Installation & Adjustment Manual

Section 3 Equipment Safety
There are certain fundamental precautions that should be taken when working on any Microflite
System. If these precautions are not taken, equipment damage and possibly personal injury could
occur. These cautions include, but are not limited to:
•
All equipment chassis= should be securely grounded to earth ground, with a minimum of #8 AWG
wire as outlined in the National Electrical Code. Failure to obtain an actual earth ground source
may result in electrical shock to personnel. Improper grounding is the most common cause of
electrical component failures and electrically noise-induced problems.
•
All component replacement must be done with the main line power off. Additionally, internal
capacitors remain charged for up to five minutes after power down. Therefore, component
replacement should not take place until after this five minute waiting period. Damage to equipment
or unexpected operation of the elevator may occur if this caution is not adhered to.
•
Substitution of parts or unauthorized modifications to circuits or components should not be
attempted before first contacting O. Thompson Engineering to ensure all safety features are
maintained. O. Thompson will not be held responsible for circuit modifications made in the field
unless they are approved in writing by O. Thompson Engineering.
•
Circuit boards that are determined to be defective should be sent to O. Thompson for repair
and subsequent testing. Field repairs may leave the board with undetected problems that may
affect other parts of the control.
•
Care should be taken when using test leads and jumpers to avoid applying high voltage or
ground to low voltage microprocessor circuits.
Revision: AA 2.1
Microflite Ultra 2000
Printed 02 - 15 - 01
3 - 1