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C:\Users\Service-Eng\Desktop\Mx\Manuals\ULB-R110 MANUAL_rev02.docx Page
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Potentially Hazardous Operator Conditions
Read this manual prior to operation.
Always run an approved ground conductor from the load bank frame to the power
source under test which in turn must be properly earth grounded.
Do not operate the unit unattended. Access to an approved electrical fire extinguisher
should be on hand at all times.
Do not operate the Load Bank with access panels removed or doors open. Doing so
would expose personnel to potential injury from electrical shock or from a moving fan
blade.
Careful consideration needs to be taken during installation and equipment location
during operation.
Hot exhaust air can cause damage to other installed equipment.
Do not direct hot exhaust air in the direction of other installed equipment?
Do not allow hot-air exhaust to recirculate through the cold-air intake.
Do not allow objects to enter or block the cold-air intake or hot-air exhaust.
Avoid blocking the air intake and ensure the area around the load bank is clear of
debris.
Do not install any external cold-air intake or hot-air exhaust duct work to the Load Bank
for ventilation.
The Load Bank must be installed and operated in a cool, well ventilated area with
adequate clearance for both intake and exhaust air. Do not allow hot air exhaust to
recirculate into the cold-air intake.
The load bank must be positioned to allow for a 4 foot intake clearance as well as a 20
foot exhaust clearance.
The unit should always be operated outdoors in a clean, cool, well-ventilated area free
of dust and debris.
Exhaust opening should not be obstructed and consideration should be given to any
combustibles around the unit due to hot air exhaust.
The Load Bank must be positioned and installed to allow for a 4 Foot intake clearance
as well as a 20 Foot exhaust clearance, avoid blocking the air intake and ensure the
area around the load bank is clear of debris
Operating personnel should avoid and never come in contact with the hot-air exhaust
and/or surrounding covers during operation and for some-time after operation as these
surfaces become hot and may result in a serious burn injury.
Never bypass any blown fuse.
Do not bypass any safety circuit including but not limited to, cooling fan overcurrent,
exhaust over-temperature switch.
Always short/shunt current transformer secondary circuits when troubleshooting
metering and instrumentation circuits.
Operating personnel should not come in contact with hot air exhaust opening, outside
panels, system components, and load resistors for some time after operation.
A recommended 5 minute cool down period of the cooling fan circuit, with no load
applied is recommended as best practice and will protect operating personnel from
possible burn injuries. A 5 minute cool down should adequately remove any residual
heat from the Load Bank and system components.
