Little Glass House User Manual

10
MAINTENANCE
CAUTION: To avoid tipping the unit when it is
being moved, push slowly on the lower part of
the enclosure. After customer equipment is
installed, the Little Glass House™ may have a
high center of gravIty.
FILTER CLEANING
NOTE: Inspect the air filter periodically to
determine the necessary cleaning interval based
on conditions at your installation.
If the air filter becomes dirty and clogged, the
alarm contact closes (no beeper alarm is
sounded). The filter is behind the louver at the
bottom of the front door. Remove two screws,
pull up the filter, clean with mild soapy water,
rinse, dry, and replace.
ECM REPLACEMENT
TO REMOVE THE ECM FOR FACTORY
REPAIRS:
-Turn off power. Unplug Environmental Control
Module from receptacle inside rear of the Little
Glass House.
-Remove the screws retaining the access plate
at top left rear of ECM. Remove the plate and
tuck the ECM power cord and plug inside the
opening to allow the ECM to pass beneath the
UPS or mounted shelves. For models including
a UPS, do not replace this access panel until
after ECM has been removed.
-Models containing a 60 Hz ECM80 require the
removal of the plug from the ECM power cord.
Once removed the power cord strain relief may
be loosened to allow the power cord to slide
through when the ECM is withdrawn from the
cabinet. Observe wiring polarity when
reinstalling the plug on the replacement unit.
-If connected, remove customer wiring to ECM
compressor power contact and/or remote
shutdown/startup contact.
-Remove four screws retaining the front
electrical panel. Pivot panel to the left. Cables
are long enough to move the box out of the way
so the Environmental Control Module can be
pulled forward after removing four rack mount
screws.
-Replace cable access cover on ECM. Package
unit for return to Liebert.
-Install the replacement ECM.
UPS REPLACEMENT
To remove the UPS for factory repairs:
-Turn off power. Unplug UPS from receptacle
inside rear of the Little Glass House.
-Unplug the power strip, ECM or FAC controls,
and any other equipment plugged into the UPS.
-Disconnect any optional communication cables.
-Remove screws retaining the UPS.
-Remove the UPS from the front of the LGH.
-Install the replacement UPS.
PLUG WIRING
50 Hz 60 Hz
Line (L) Brown Black
Neutral (N) Blue White
Ground/Earth (G) Gold Gold