Simplex Microstar Manual do Utilizador Página 6

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MICROSTAR + SYSTEM MANUAL page 6 of 21
Simplex, Inc., 270 Riverside Parkway Suite G Austell, GA 30168 • 678-214-6575 • Fax 678-214-6670
Printed in the USA. • www.simplexdirect.com
SETUP
Consult NEC for proper wire size for all connections unless stated within this manual or on a drawing.
1. Confirm the test source is properly grounded and ground the Microstar + to its own independent
ground.
2. Confirm all switches on the local control panel are in the “Off” position.
3. Cable the load source to the Microstar +, balancing the load, as shown.
4. Connect load dump contacts, as shown. (Load is disengaged when 24VDC).
5. Start-up the test source and begin analysis.
LOCAL CONTROL
LOAD DUMP
This load bank contains a load dump feature which de-energizes all applied load when customer supplied
contacts have a 24VDC supply provided. The contacts, tied to a normally closed relay, are rated at 2A @
24VDC and should be wired to TB’A’ 4-5. When these contacts are energized all applied load will be de-
energized and the load section will be disabled. If desired, the customer may install automatic transfer switch
contacts, a manual pushbutton or circuit breaker for this use.
FAILURE DETECTION
If a failure occurs the corresponding status indicator will be present and the load will be de-energized.
Before reapplying a load, the failure must be corrected and the system must be reset by turning the load
bank “Off” then “On”.
This is a permissive/energize-to-run circuit in which all safety sensors must energize their control relays on
normal operation before load can be applied. This system will include a thermoswitch; set at 175˚ F, tied to a
relay that will open all magnetic load contactors if over temperature is achieved.
MAINTENANCE
The Microstar + has been designed to require
minimum maintenance. All components have been
chosen for a long, reliable life. Two basic intervals
of maintenance are required: each operation and
every 50 hour or 6 months (whichever comes first).
Each Operation – The air intake and exhaust
screens must be checked for any obstructions or
foreign objects. Check fan blades for stress
fractures. Due to the high volume of air circulated,
paper and other items can be drawn into the air
intake. During load bank operation insure that the
air is exiting from the exhaust vent.
The load branches should be checked for blown
fuses or opened load resistors. To check the fuses
or load resistors, operate the load bank from a
single phase source. If your fuse is blown on any
branch you will detect no current. In addition you
will not have continuity on the fuse.
For continued safety and for
maximum protection, always
replace fuses with one of
equal rating only
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