Service manual

SECTION II: ELECTRICAL HAZARDS
GENERAL
Vendo vending machines are provided with the appropriate power supply setting for your
area. Some models are equipped with step-down transformers, as required, enabling the
vending machines to operate on different mains voltages. Refer to section I. E. for
information to determine the main power requirements. Refer to the appropriate Service
Manual for details of step-down transformer operation.
The power sources mentioned above are standard for both household and commercial
lighting and appliances. However, careless or improper handling of electrical circuits can
result in injury or death. Anyone installing, repairing, loading, opening, or otherwise
servicing a vending machine should be alerted to this point. Apply all of the normal
precautions observed in handling electrical circuits, such as:
• Refer servicing to qualified personnel only.
• Unplug the vendor before servicing or clearing product jams.
• Replace electrical cords if there is any evidence of fraying or other damage.
• Keep all protective covers in place.
• Plug equipment into outlets that are properly polarized (where applicable), and
protected with fuses or circuit breakers.
• All electrical connections must be dry and free of moisture before applying power.
A. Grounding Systems
Vendo vending machines are provided with the appropriate service cord for the
power supply in your area. The service cord will connect to the matching electrical
outlet. Always ensure that the outlet to be used is properly grounded (and polarized
where applicable) before plugging in the vendor. (See pages 3 and 4).
WARNING:
ALWAYS TEST TO VERIFY PROPER GROUNDING PRIOR TO
INSTALLATION, IN ORDER TO REDUCE THE RISK OF ELECTRICAL
SHOCK AND FIRE
The electrical grounding system also includes the bonding of all metal components within
the vendor. This involves a system of bonding wires identified by green or green and
yellow marking. The system uses serrated head screws, lock washers, and star washers
to assure the electrical connection between parts. Maintenance of vending equipment
may involve disassembly. Include the above items when reassembling, even if the
vending machine may appear to function normally without them. Omitting any of these
items can compromise a link in the grounding system. See the appropriate Service
Manual or kit instructions for components and assembly instructions.
Page 6