User`s manual

MPS Doc: M359_USER_MANUAL REV J Oct 23, 2014 Page 23 of 30
6.4. Air Filter Maintenance
The Air Filter (4) should be monitored periodically for cleanness. Dust and dirt accumulation
can interfere with the cooling air-flow and may result in over temperature condition. To clean
the filter:
1) Open the three captive screws (3, 9 and 10) holding the Air Filter.
2) Remove the Air Filter Assembly (as is, no need for further disassembly).
3) Wash the assembly with warm water and detergent.
4) Using dry air, remove water residue and dry the filter.
5) Re-install the Filter back in place and tighten the three captive screws using a
torque of 60.6 Lb-Inch.
7. Communication and Remote Control
7.1. Ethernet SNMP (Optional)
An optional Ethernet SNMP port is available through the J4 (37) connector on the M359 back
panel. If this option is used, then the RS-232 Connector (J5) serves only as Consol and is a
DCE (the Standard UPS RS-232 is a DTE). For details please see the UPS SNMP User’s
Manual.
7.2. Dry Contacts Interface
Dry Contacts Interface is available through connector J3 (32), a D-Type 9P connector located
on the back panel. This interface allows control and monitoring of the UPS by a server that
does not have Ethernet or serial interface provision. Figure 9 below shows the dry contacts
interface circuits. The pin assignment of J3 is shown on the next page.
1K
3 REMOTE S.D (+)
J3
7 BAT V LOW
9 BAT OPER
8 UPS ON
5 SYSTEM GND
4 NOT BAT OPER
1 FLT DET HI
2 FLT DET LO
Figure 9 - Dry Contacts