22
LUBRICATION
IMPORTANT: DO NOT
a
ttempt to lubric
a
te the be
a
rings on the blower motor or the
induced dr
a
ft blower motor. Addition of lubric
a
nts c
a
n reduce the motor life
a
nd void the
w
a
rr
a
nty.
The blower motor
a
nd induced dr
a
ft blower motor
a
re prelubric
a
ted by the m
a
nuf
a
cturer
a
nd do not require further
a
ttention.
A qu
a
lified inst
a
ller, service
a
gency or the g
a
s supplier must periodic
a
lly cle
a
n the
motors to prevent the possibility of overhe
a
ting due to
a
n
a
ccumul
a
tion of dust
a
nd dirt
on the windings or on the motor exterior. And,
a
s suggested elsewhere in these instruc-
tions, the
a
ir filters should be kept cle
a
n bec
a
use dirty filters c
a
n restrict
a
ir flow
a
nd the
motor depends upon sufficient
a
ir flowing
a
cross
a
nd through it to prevent overhe
a
ting.
COOLING SECTION MAINTENANCE
It is recommended th
a
t
a
t the beginning of e
a
ch cooling se
a
son
a
qu
a
lified inst
a
ller or
service
a
gency inspect
a
nd cle
a
n the cooling section of this unit. The following
a
re
a
s
should be
a
ddressed: ev
a
por
a
tor coil. condenser coil, condenser f
a
n motor
a
nd venturi
a
re
a
.
To inspect the evaporator coil:
1. Remove the filter
a
ccess p
a
nel
a
nd the blower/ev
a
por
a
tor coil
a
ccess p
a
nel.
Remove the filters.
2. Shine
a
fl
a
shlight on the ev
a
por
a
tor coil (both sides)
a
nd inspect for
a
ccumul
a
tion of
lint, insul
a
tion, etc.
3. If coil requires cle
a
ning, follow the steps shown below.
Cleaning Evaporator Coil
1. The coil should be cle
a
ned when it is dry. If the coil is co
a
ted with dirt or lint, v
a
cuum
it with
a
soft brush
a
tt
a
chment. Be c
a
reful not to bend the coil fins.
2. If the coil is co
a
ted with oil or gre
a
se, cle
a
n it with
a
mild detergent-
a
nd-w
a
ter solu-
tion. Rinse the coil thoroughly with w
a
ter. IMPORTANT: Do not use excessive w
a
ter
pressure. Excessive w
a
ter pressure c
a
n bend the fins
a
nd tubing of the coil
a
nd le
a
d
to in
a
dequ
a
te unit perform
a
nce. Be c
a
reful not to spl
a
sh w
a
ter excessively into unit.
3. Inspect the dr
a
in p
a
n
a
nd condens
a
te dr
a
in
a
t the s
a
me time the ev
a
por
a
tor coil is
checked. Cle
a
n the dr
a
in p
a
n by flushing with w
a
ter
a
nd removing
a
ny m
a
tters of
obstructions which m
a
y be present.
4. Go to next section for cle
a
ning the condenser coil.
Cleaning Condenser Coil, Condenser Fan, Circulation Air Blower and Venturi
1. Remove the compressor
a
ccess p
a
nel. Disconnect the wires to the condenser f
a
n
motor in the control box (see wiring di
a
gr
a
m). Remove the wires from the opening in
the bottom of the control box.
2. Remove the screws securing the condenser top p
a
nel
a
nd remove the p
a
nel with
condenser f
a
n motor
a
nd grille
a
tt
a
ched.
3. The coil should be cle
a
ned when it is dry. If the coil is co
a
ted with dirt or lint, v
a
cuum
it with
a
soft brush
a
tt
a
chment. Be c
a
reful not to bend the coil fins.
4. If the coil is co
a
ted with oil or gre
a
se, cle
a
n it with
a
mild detergent-
a
nd-w
a
ter solu-
!
WARNING
DISCONNECT MAIN ELECTRICAL POWER TO THE UNIT BEFORE ATTEMPT-
ING MAINTENANCE. FAILURE TO DO SO MAY RESULT IN ELECTRICAL
SHOCK OR SEVERE PERSONAL INJURY OR DEATH.
!
WARNING
DISCONNECT MAIN ELECTRICAL POWER TO THE UNIT BEFORE ATTEMPT-
ING MAINTENANCE. FAILURE TO DO SO CAN CAUSE ELECTRICAL SHOCK
RESULTING IN SEVERE PERSONAL INJURY OR DEATH.
!
WARNING
LABEL ALL WIRES PRIOR TO DISCONNECTION WHEN SERVICING THE UNIT.
WIRING ERRORS CAN CAUSE IMPROPER AND DANGEROUS OPERATION
RESULTING IN FIRE, ELECTRICAL SHOCK, PROPERTY DAMAGE, SEVERE
PERSONAL INJURY OR DEATH.
Summary of Contents for RKNA SERIES
Page 24: ...24 FIGURE 20 FIGURE 21 INTEGRATED FURNACE CONTROL SPEED TAP BLOCK FIGURE 22...
Page 25: ...25 FIGURE 22 Continued...
Page 55: ...55 FIGURE 23 WIRING DIAGRAM...
Page 56: ...56 FIGURE 24 WIRING DIAGRAM...
Page 57: ...57 FIGURE 25 WIRING DIAGRAM...
Page 58: ...58 FIGURE 26 WIRING DIAGRAM...
Page 59: ...59 FIGURE 27 WIRING DIAGRAM...
Page 60: ...60 FIGURE 28 WIRING DIAGRAM...
Page 61: ...61 FIGURE 29 WIRING DIAGRAM...
Page 62: ...62 FIGURE 30 SYSTEM CHARGE CHARTS 3 TON COOLING 13 SEER...
Page 63: ...63 FIGURE 31 SYSTEM CHARGE CHARTS 3 5 TON COOLING 13 SEER...
Page 64: ...64 FIGURE 32 SYSTEM CHARGE CHARTS 4 TON COOLING 13 SEER...
Page 65: ...65 FIGURE 33 SYSTEM CHARGE CHARTS 5 TON COOLING 13 SEER...
