8. Care & Maintenance
1. Keep the unit clean and vacuum the ventilation intake periodically.
2. Wipe with a soft, damp cloth.
3. Check for loose and/or bad connections monthly.
4. Never leave the unit on an uneven surface.
5
. Position the unit to allow at least 1/2” (1.3 cm) clearance between the rear panel and the wall.
6. Keep the ventilation intake open.
7. Avoid direct sunlight, rain, and high humidity.
8. Keep away from fire and extremely hot locations.
9. Do not stack anything on top of the unit.
10.The unit should not be exposed to corrosive environments.
11.Normal operating temperature is 32 to 104°F (0-40°C).
9. Computer Interface Port
1. The communication port on the back of the UPS may be connected to the host computer. The port
allows the computer to monitor the status of the UPS and, in some cases, control the operation of
the UPS.
2. Major functions include some or all of the following:
• Power disturbance notification.
• Closure of any open files prior to battery depletion.
• UPS power-up or OFF.
3. Although most computers are equipped with a connector (via COM port) to allow a link to the
communication port on the back of the UPS, a special plug-in card may be needed in the event
one is not available. Some computers may also need special software. Contact tech support for
details on various interface kits.
4. The computer interface port has the following characteristics:
• Pin 5 and 2 are open collector outputs which must be pulled up to a common reference
supply of no greater than +40 VDC.
• The transistors are capable of a maximum nonconductive load of 25 mA DC. Use pin 7 only
as the common.
• Pin 5 generates a High to Low signal when the battery inside the UPS has less than 5 minutes
back-up time left.
• Pin 2 generates a High to Low signal when the line fails.
• The UPS will shut down when a high RS-232 level is sustained on pin 6 for 0.36 seconds.
• Pin 9 is also used for RS-232 data output.
• Pin 6 is used for the RS-232 data input (RxD).
NOTES:
• Switch 40V,
0.15A non-inductive.
• Pin 7 should be con-
nected to ground only.
14
1
8 7 6
5 4 3 2
9
Power failure, normally open, will become closed upon activation
Reference for pins 2 & 5 (ground)
Battery Low, normally open, closed upon activation
Remote shutdown UPS - Applying voltage (+5V ~ +12V)
to this pin for 500ms shuts the UPS down.
Reference for pin 6 (ground)
OUT
OUT
OUT
IN
IN
2
4
5
6
7
Function Explanation
Pin#
I/O
