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3.0 DESCRIPTION AND SPECIFICATION
3.1 Introduction
This section will provide a brief synopsis of the use of the Microstar Load Bank. Simplex,
Inc. reserves the right to change this synopsis, and this section should only serve as a
brief concept of the device.
In this section, you will find:
—
An overview of normal usage of this load bank.
—
An overview of hardware capabilities.
—
An overview of safety functions.
3.2
Overview of Use
The Simplex Microstar Load Bank are precision test instruments specifically designed
to apply discrete, selectable heat loads to a cooling source. The Load Bank unit also
provides routine maintenance to assure long-term reliability of the product and
readiness of the building cooling systems. The unit fits a 19-inch server rack of nearly all
types including square or round holes, either non-threaded or threaded (#10, #12, M6)
and is 10U (17.5 inches) tall.
The cabinet on the unit is rated Environmental Type 1, and the unit is rated for operation
in conditions up to but not exceeding 40˚C (104˚F).
The unit tests the building cooling source by applying resistive load steps to generate
predetermined amounts of heat (KW). Adjusting the fan speed with the Fan Control
knob will control temperature rises.
Consult the fuse replacement chart on the rear of the load bank for further details or
see “2.0 Nameplates and Placards” on page 6 if the decal can’t be read.
Operating controls are provided locally via the control panel of switches located on
the front of the unit. The control system is composed of 24VDC components. Common
serviceable components include control fuses and load application fuses. Lamps on the
face panel of the load bank indicate its operating status.
The local control panel contains the following components:
•
A Green Light indicating “Cooling Active”
•
A Red Light indicating “Over Temperature”
•
An On/Off Switch
•
A Fan Speed Potentiometer
•
Load Step 1-7 switches
The “Cooling Active” lamp, a green light, illuminates when control power is “On” or
active, and the load may be applied.
Sensors protect the load bank against cooling failure (high exhaust air temperature,
which could damage the Load Bank or present a safety hazard to the operator). When
a cooling failure occurs, the automatic safety feature in the control system immediately
removes all load. The operator must correct the malfunction. After correcting the issue,
the operator must reset the system by powering down the load bank, and then, turning
