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Carrier 50PM20 Installation Instructions Manual page 35

Single package rooftop units electric cooling with electric heat option and electromechanical controls with puron (r-410a) refrigerant

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Totaline environmentally
sound
coil
cleaner
is
non-
flammable,
hypoallergenic,
nonbacterial,
and
a
USDA
accepted
biodegradable
agent
that
will
not
harm
the
coil
or
surrounding
components
such as electrical
wiring,
painted
metal
surfaces,
or insulation.
Use of non-recommended
coil cleaners
is
strongly
discouraged
since
coil
and
unit
durability
could
be
affected.
Totaline®
Environmentally
Sound
Coil
Cleaner
Application
Equipment
• 21/2 gallon
garden sprayer
• water rinse with low velocity
spray nozzle
EQUIPMENT
DAMAGE
HAZARD
Failure to follow
this caution
may result in equipment
damage.
Harsh
chemicals,
household
bleach
or acid or basic
cleaners
should
not be used to clean
outdoor
or indoor
coils of any
kind.
These cleaners
can be very difficult
to rinse out of the
coil and can accelerate
corrosion
at the fin/tube
interface
where
dissimilar
materials
are in contact.
If there is dirt below
the
surface of the coil, use the Totaline
environmentally
sound coil
cleaner
as described
above.
EQUIPMENT
DAMAGE
HAZARD
Failure to follow
this caution
may result in equipment
damage.
High velocity
water
form
a pressure
washer,
garden
hose,
or
compressed
air should
never be used to clean a coil.
The force
of water
or air jet will bend
the fin edges and increase
airside
pressure
drop.
Reduced
unit performance
or nuisance
unit
shutdown
may occur.
Sound
Coil
Cleaner
Application
Totaline
Environmentally
Instructions
1. Proper
eye
protection
such
as
safety
glasses
is
recommended
during
mixing
and application.
2. Remove
all surface
loaded
fibers and dirt with
a vacuum
cleaner
as described
above.
3. Thoroughly
wet finned surfaces
with clean water and a low
velocity
garden
hose, being
careful not to bend
fins.
4. Mix
Totaline
environmentally
sound
coil
cleaner
in
a
21/2 gallon
garden
sprayer
according
to the
instructions
included
with
the
cleaner.
The
optimum
solution
temperature
is 100°F.
NOTE:
Do NOT USE water in excess of 130°F,
as the enzymatic
activity will be destroyed.
5. Thoroughly
apply
Totaline
environmentally
sound
coil
cleaner
solution
to all coil surfaces
including
finned
area,
tube sheets and coil headers.
6. Hold garden
sprayer
nozzle
close to finned areas and apply
cleaner
with
a vertical,
up-and-down
motion.
Avoid
spraying
in horizontal
pattern
to minimize
potential
for fin
damage.
7. Ensure
cleaner
thoroughly
penetrates
deep
into
finned
areas.
8. Interior
and
exterior
finned
areas
must
be
thoroughly
cleaned.
9. Finned
surfaces
should
remain
wet with
cleaning
solution
for 10 minutes.
10. Ensure
surfaces
are not
allowed
to dry
before
rinsing.
Reapplying
cleaner
as
needed
to
ensure
10-minute
saturation
is achieved.
11. Thoroughly
rinse
all
surfaces
with
low
velocity
clean
water
using
downward
rinsing
motion
of water
spray
nozzle. Protect
fins from damage
from the spray nozzle.
Condensate
Drain
Check
and clean
each year at the start of the cooling
season.
In
winter,
keep drains
and traps dry. An access panel is located
above
the
condensate
connection
to
allow
easy
clean
out
of
the
condensate
pan. The first time the panel is removed,
the insulation
behind
the access panel will need to be cut away. Carefully
cut the
insulation
with a knife or blade on three sides so the insulation
can
be folded out of the way during
cleaning.
Be careful not to damage
components
behind
the insulation
while
cutting.
Once cleaning
is
completed,
fold the insulation
back into place and secure the access
panel in the original
position.
Filters
Clean
or replace
at start of each heating
and cooling
season,
or
more
often
if operating
conditions
require.
Refer
to Table
1 for
type and size.
Outdoor-Air
Inlet
Screens
Clean screens with steam or hot water and a mild detergent.
Do not
use throwaway
filters in place of screens.
See Table 1 for quantity
and size.
Lubrication
Compressors
Each
compressor
is charged
with the correct
amount
of oil at the
factory.
EQUIPMENT
DAMAGE
HAZARD
Failure to follow
this caution
may result in equipment
damage.
The compressor
is in a Puron
refrigerant
system
and uses a
polyester
(POE)
oil.
This
oil
is extremely
hygroscopic,
meaning
it absorbs
water
readily.
POE
oils can absorb
15
times as much water as other oils designed
for HCFC
and CFC
refrigerants.
Avoid exposure
of the oil to the atmosphere.
Polyolester
(POE)
compressor
lubricants
are known
to cause long
term damage to some synthetic
roofing
materials.
Exposure,
even if
immediately
cleaned
up, may cause
roofing
materials
to become
brittle
(leading
to cracking)
within
a year. When
performing
any
service which
may risk exposure
of compressor
oil to the roof, take
appropriate
precautions
to protect
roofing.
Procedures
which
risk
oil leakage
include
compressor
replacement,
repairing
refrigerant
leaks, and replacing
refrigerant
components.
To prepare rooftop:
1. Cover extended
roof work area with an impermeable
plastic
dropcloth
or tarp. Make sure a 10 x 10 area around
the work
area is covered.
2. Cover
area in front
of the unit service
panel with
a terry
cloth
shop
towel
to absorb
lubricant
spills
and prevent
run-offs.
Towel
will
also
protect
dropcloth
from
tears
caused by tools or components.
3. Place terrycloth
shop
towel
inside
the unit directly
under
components
to be
serviced
to prevent
spills
through
the
bottom
of the unit.
4. Perform
the required
service.
B
35

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