Document Operating and Maintenance manual, AC200
Reference No. 164571
Revision A
Date 23-JUL-2021
Author AK
Power Prove www.powerprove.com
Leicester. LE5 5LZ. United Kingdom sales@powerprove.com
a division of Cressall Resistors Ltd. +44(0) 116 249 1722 Page 4 of 12
3) Safety
General
When using this equipment basic precautions should always be followed to reduce the risk of fire, electrical shock, and
injury to persons, including the following:
1) Do not operate the load bank with a damaged cables or plugs or after the malfunction of the equipment
itself or if it has been dropped or damaged in any manner. Discard the load bank or return to authorized
service facility for examination and/or repair.
2) Always unplug the load bank when not in use.
3) Do not use the load bank in areas where flammable liquids are used or stored.
4) Before use perform a visual inspection of the resistor duct by shining a torch into each end of the duct (fan
side and resistor bank side) and ensure there has been no ingress of materials, vermin etc. that could
impede the airflow or cold ignite once the resistor elements are hot.
5) Perform a walk around of the equipment and ensure all fixings are tight. If there are any obvious signs of
damage, please contact Power Prove for support before connecting a power source.
Protective earth bonding
ELECT RIC S H OCK H A ZARD ! The protective earth socket must be connected to an external earth point. Operating
without a grounding connection could lead to injury or death.
When the load bank is in operation, the protective earth socket must be securely, electrically connected to an external
earth point. The bonding connection provides a low resistance path to earth. This protects the operator from the
possibility of electrical shock.
Power Connections
ELECT RIC S H OCK H A ZARD ! All power connections must be connected or guarded. Failure to do so will expose
operators to electric shock, leading to severe injury or death.
BURNS & S HOCK HAZARD ! Connecting or disconnecting plugs and receptacles while current is flowing, or
voltage is present may cause arcing. Arcing can generate a great deal of light,
heat, and possibility of electrocution.
FIRE HA ZA R D! Do not run cables under carpeting. Do not cover cord with throw rugs, runners, or
similar coverings.
TRIP HA Z ARD ! Arrange cables away from high foot traffic areas, where they will not present a trip
hazard.
Ventilation
Aside from the connections the most critical aspect of safe load bank operation is the ventilation. Load banks become
very hot during operation and failure to provide sufficient ventilation and adherence to the following instructions could
cause fire, burns and/or other injuries.
In principle, high volumes of cooling air are needed to prevent load elements from overheating. By their very nature,
resistors under load convert electrical energy to heat. This heat must be removed from the unit. The air inlet and outlets
are sized to provide the proper amount of cooling air. Preventing or limiting airflow will cause the load bank to
overheat.
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