Condensing Unit & Heat Pump R410A Service Manual

104
SERVICING
10.Remove the bolts holding the motor bracket to the
blower and slide out of blower shell.
11.Replace the motor and reinstall blower and control box.
12.Reconnect power and test operaon.
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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 gasket
(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, spoung ames several feet,
causing potenally 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 sucient heat source.
Ignion of the discharge can also occur at the venng terminal
or inside the compressor, if there is sucient contaminant air
present in the system and an electrical arc occurs as the terminal
vents.
Ignion cannot occur at the venng terminal without the
presence of contaminant air, and cannot occur externally
from the venng terminal without the presence of an external
ignion source.
Therefore, proper evacuaon of a hermec system is essenal
at the me of manufacture and during servicing.
To reduce the possibility of external ignion, all open ame,
electrical power, and other heat sources should be exnguished
or turned o prior to servicing a system.
S-17A Resistance Test