Operation
Avtron Resistive Load Bank - Part Number LPV600 994210
4-1
SECTION IV
OPERATION
PURPOSE AND USE OF CONTROLS
1. CONTROL POWER ON/OFF Switch. This switch turns on control power to the control
circuit. Digital meters will illuminate.
2. BLOWER VOLTAGE SELECT Switch. This switch selects the appropriate voltage for the
fan motor. Set to proper position before operation.
3. FAN ROTATION ABC/CBA Switch. This switch is used to reverse the rotation of the
cooling fan if airflow is moving in the wrong direction. Always turn off fan by pressing the
BLOWER STOP switch and allow the fan to coast to a stop before changing the FAN
ROTATION ABC/CBA switch setting.
4. BLOWER START/STOP Pushbuttons. Pushbuttons are used to initiate fan motor start and
stop circuits.
5. BLOWER FAIL Lamp. This lamp should momentarily light when power switch is turned
on. This shows the air safety circuit is working. This lamp's purpose is to warn the operator
of an air failure or improper cooling of load elements.
6. MANUAL/AUTO MODE Switch. This switch is used to select between Manual Mode
(Local Panel) or Auto Mode (PLC Control) supplied by others.
7. MANUAL/AUTO Lamps. These lamps indicate the configuration mode of the Load Bank.
8. MASTER LOAD ON/OFF Switch. This switch connects power to all load steps, thus
allowing all set load steps to be actuated at the same time. It is also a master load
disconnect.
9. KW LOAD Step Switches. The load in kilowatts is marked above each actuating switch. A
load step may be turned on or off before or during a test, but will load the unit only when the
MASTER LOAD switch is ON.
10. Digital Meters – Displays DC Volts and DC Amps.
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