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U:\ILB\5_Technical Manual\ULB-R210-480-240-IP\ULB-R210 MANUAL_rev01.docx Page 7 of 42
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; Current Sense, cooling fan fault,
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 fans 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.
Emergency Shut-Down:
In a controlled emergency stop condition, click <LOAD DROP> button on display allowing cooling fan
to run while all load steps are disconnected. Turn off and disconnect the main-power source under
test. Disconnect all sources of power to the Load Bank (Main input load bus) and External 120 VAC
control power.
Maintenance should always be done only by qualified personnel and with all sources of power
disconnected from the unit (main input Cam-lok power, External power to all cooling fan and
control circuits). Always follow The National Electric Code (NEC), local electrical safety codes
and the Occupational Safety and Health Act (OSHA) when handling, installing and operating
equipment to reduce hazards, personal injury and property damage.
