Trane CGAH Series User Manual

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3.
The following maintenance
instructions
are
part
of
maintenance operations
required for
this equipment.
A
qualified
technician is
needed for regular
maintenance
as
part
of a
regular
maintenance
contract.
Carry
out
all operations
as required
by schedule.
This
will insure
long
unit service life
and reduce
the
possibility
of
serious
and costly
breakdowns.
Keep service
records
up
to date,
showing
weekly
information
on unit
operations.
These records
can be of
great
help
to maintenance
personnel
diagnostics.
Similarly,
if machine
operator
keeps
a
log
of changes
in
unit
operating
conditions,
problems
can be identified
and
solutions found.before
more
serious
problems
arise.
Weekly maintenance
1. Check compressor
oil level
at rest.
Oil level
should
be
halfway
up sightglass located
on the housing.
Check oil level
every
30
minutes. lf
oil level
does not
reach level
shown
below,
contact
qualified
technician. Use
Trane-recommended
compressor
oil.
Excess
oil in
the
compressor
can
be as
damaging
as
not
enough
oil.
Before
topping
up, contact
a
qualified
technician.
Use
only Trane-recommended
oils.
Refrigerant
flow
through
the sightglass
should
be
regular
and
bubble-free.
Bubbtes
show
either that
there is not
enough refrigerant,
or a
possible
leak,
or
constriction
in
liquid
line.
Contact
a
qualified
technician.
Each indicator
is fitted
with
a moisture
indicator
whose
element
color
will
change
with
the moisture
level in
the refrigerant.
However
it is
also
affected
by
temperature.
lt
should
display "dryo
refrigerant.
lf
"moist'
is
displayed,
operate
unit
for
12 hours
minimum
and re-check.
lf the
display
remains
on
"caution"
or
"moisture
present",
contact
a
qualified
technician.
5. Check
service
pressures.
lf
they
are above
or below
normal,
see
'Operating
defects'
chapter.
Normat
service
pressures
are
shown
in
table
3.
6.
Inspect
the
entire
system
for
undesirable
effects,
such
as noisy
compressor,
loose
access
panels,
leaks
in
pipes,
or
loose
contactors.
7
"
Keep
records
of
temperatures,
pressures.
dates
and
times, or other
observations
in log
book.
Recommended
oil
Please refer
to
specific Trane
documentation
on
oil,
available from
your
nearest
Trane
agency.
Annual maintenance
1. Check chilled
water
circuit,
vatve,
filters if
necessary.
Analyze
water
may
be required,
in
which
case
assistance.
pipes,
and
clean
quality.
Cleaning
use
professional
2.
Clean
corroded
outer
surfaces,
and
repaint.
Check
status of
circulation
pr_rmp
and
accessories.
3. Check for leaks
in
the
chilled
water
circuit.
Check circulating
pump
operation
and
associated
devices.
Check
percentage
ol' anti-freeze
in
chilled
water
circuit,
and
top up
as
necessary.
4.
Carry
out all weekly
nraintenance
inspections.
Maintena
nce
inspection
The first
and last
inspections
will
incrude
the
procedures
required
for
seasonal
shutdown
and
startup,
as the
case
may
be. Follow instructiorrs
in
'Operating"
chapter.
lnspections
must
include
the following:
-
Check
contactors.
-
Check adjustment
anrJ
operation
of
each
control
device.
Oil samples
will
need
to be
taken
and
analyzed
by
the
manufacturer
through
your
Trane
agency,
to check
on
wear of
compressors, particles
in
suspension,
and
acidity.
Refer
to maintenaÍ'rce
guide
avairable
from
Trane
agency
only
this analysis
will
show
whether
compressor
oil
should
be
replaced.
-
Check for
leaks
in
refrigerant.
-
Check insulation
of
motor
windings.
Other interventions
may
be necessary,
depending
on
the
age and
service life
of unit.
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Trane CGAH Series Specifications

General

Brand	Trane
Model	CGAH Series
Category	Chiller
Language	English