Installation
Avtron Model LPH400 • Resistive Load Bank
Part Number LPH400D30693-1
3-2
DO NOT STACK LOAD BANKS.
Standard Load Bank design is suitable for operation between sea level and 3,000 ft. maximum
altitude.
AIRFLOW CONSIDERATIONS
Even with an ample supply of cooling air, the Load Bank may overheat, if it is not properly
installed. There are two types of airflow problems that should be avoided:
1.
RECIRCULATING AIRFLOW - If the hot, exhausted air is permitted to recirculate
through the Load Bank, it will reach such a high temperature and low density that it will
no longer cool the resistance elements. Maximum allowable intake air temperature is
120
F. A Load Bank should not be installed so close to any surface which may reflect
the exhausted air back to the air intake. When two or more Load Banks are being used,
care must be taken in positioning the Load Banks so that the exhausted air of one unit
does not feed the air intake of another.
2.
RESTRICTION OF COOLING AIR - Any obstruction located within four (4) feet of the
inlet or eight (8) feet of exhaust screens will restrict the Load Bank's airflow. Airflow is
also restricted when two or more Load Banks have air inlets positioned close to each
other. This competition for cooling air causes a low pressure area, restricting adequate
airflow to either unit.
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W A R N I N G
It is vitally important to install the Load Bank properly.
Installation errors may result in a catastrophic failure. The Airflow
switch, a protective device in the Load Bank, will guard against
some of these problems.
If protective circuitry prevents
application of the load, determine the source of the problem. DO
NOT DISABLE the AIRFLOW SWITCH. This will cause a
safety hazard and will void our warranty.
The following
installation instructions are critical to the safe operation of the
Load Bank. (Refer to Section I, SAFETY CONSIDERATIONS,
of this manual.)
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