Emerson Liebert ICOM-DO User Manual Page 59

  • Download
  • Add to my manuals
  • Print
  • Page
    / 172
  • Table of contents
  • BOOKMARKS
  • Rated. / 5. Based on customer reviews
Page view 58
Operation
51 Liebert
®
iCOM
®
for Liebert DSE
EEV Battery Backup
Each electronic expansion valve is equipped with a battery backup to drive the valve closed if power is
lost during normal operation. The Liebert iCOM monitors battery life by performing periodic tests
using the electronic expansion valve board. If a test fails, the Liebert iCOM will report an EEV1 or 2
BATTERY WARNING or EEV1 or 2 BATTERY FAILURE event.
The Liebert iCOM has a counter in Service Menus> Set Alarms. Once a battery issue is detected, a
value of 1 is added to the corresponding EEV battery counter. Once an issue is address (battery
replaced, etc.) the service technician should reset the counter to 0. If the EEV issue is not addressed
within 24 hours from the time it was detected, a BATTERY FAILURE event will occur and the circuit
will be locked out.
See Table 10 for other EEV related alarms and descriptions.
3.8.4 Liebert MC
with Premium Efficiency Control-Overview
One or two Liebert MC condensers equipped with the Premium Efficiency Control option can be
connected to the Liebert iCOM using CANbus. See 3.8 - CANbus Connections Between the
Liebert DSE, Liebert EconoPhase
and Liebert MC
for more information.
When no connection to the Liebert MC board can be established (10-second delay) the event “Cond.
Board disconnected 1 (or 2)” will be announced.
The Liebert MC board is designed to work independently whether or not connected to the Liebert
iCOM.
Screen Management for Dual GCB
When two Liebert MC board’s are connected, two sets of screens will be used: the first set for the first
board, the second for the second board.
Below the password line a “Select Condenser 1/2" indication will allow to toggle between the two sets
of screens (see U802 and U813 in Figure 44).
Page view 58
1 2 ... 54 55 56 57 58 59 60 61 62 63 64 ... 171 172

Comments to this Manuals

No comments