GSX14 Service Manual

SERVICING
106
Model Switch 5 Switch 6 CFM
OFF
OFF
1,200
ON
OFF
1,000
OFF
ON
800
ON
ON
600
OFF
OFF
1,600
ON
OFF
1,400
OFF
ON
1,200
ON
ON
1,000
OFF
OFF
2,000
ON OFF
1,800
OFF ON
1,600
ON
ON
1,200
MBE1200
MBE1600
MBE2000
Cooling/Heat Pump Operation
Table 3
THERMOSTAT “FAN ONLY” MODE
During Fan Only Operations, the CFM output is 30% of the
cooling setting.
WARNING
Hermetic compressor electrical terminal venting can
be dangerous. When insulating material which
supports a hermetic compressor or electrical terminal
suddenly disintegrates due to physical abuse or as a
result of an electrical short between the terminal and
the compressor housing, the terminal may be
expelled, venting the vapor and liquid contents of the
compressor housing and system.
If the compressor terminal PROTECTIVE COVER and gas-
ket (if required) are not properly in place and secured, there
is a remote possibility if a terminal vents, that the vaporous
and liquid discharge can be ignited, spouting flames several
feet, causing potentially severe or fatal injury to anyone in its
path.
This discharge can be ignited external to the compressor if
the terminal cover is not properly in place and if the discharge
impinges on a sufficient heat source.
Ignition of the discharge can also occur at the venting
terminal or inside the compressor, if there is sufficient
contaminant air present in the system and an electrical arc
occurs as the terminal vents.
Ignition cannot occur at the venting terminal without the
presence of contaminant air, and cannot occur externally
from the venting terminal without the presence of an external
ignition source.
Therefore, proper evacuation of a hermetic system is
essential at the time of manufacture and during servicing.
To reduce the possibility of external ignition, all open flame,
electrical power, and other heat sources should be extin-
guished or turned off prior to servicing a system.
If the following test indicates shorted, grounded or open
windings, see procedures S-19 for the next steps to be
taken.