Samsung ASHM070VE, ASHM120VE, AXHM260VE Service Manual
SERVICE
Manual
CONTENTSAIR CONDITIONER
1. Pre c a u t i o n s
2. Product Specifications
3. Operating Instructions and
I n s t a l l a t i o n
4. Disassembly and Reassembly
5. Tro u b l e s h o o t i n g
6. Exploded Views and Parts List
7. Block Diagrams
8. PCB Diagrams
9. Wiring Diagrams
10. Schematic Diagrams
ROOM AIR CONDITIONER
INDOOR UNIT
ASHM070VE
ASHM120VE
OUTDOOR UNIT
AXHM260VE
© Samsung Electronics Co., Ltd. MAY. 1998.
Printed in Korea.
Code No. DB81-10153A(1)
1 . Warning: Prior to re p a i r, disconnect the
power cord from the circuit bre a k e r.
2 . Use proper parts: Use only exact
replacement parts. (Also, we re c o m m e n d
replacing parts rather than repairing them.)
3 . Use the proper tools: Use the proper tools
and test equipment, and know how to use
them. Using defective tools or test
equipment may cause problems laterintermittent contact, for example.
4 . Power Cord: Prior to re p a i r, check the power
c o rd and replace it if necessary.
5 . Avoid using an extension cord, and avoid
tapping into a power cord. This practice
may result in malfunction or fire .
6 . After completing repairs and re a s s e m b l y,
check the insulation resistance. Pro c e d u re :
Prior to applying power, measure the
resistance between the power cord and the
g round terminal. The resistance must be
g reater than 30 megohms.
7 . Make sure that the grounds are adequate.
8 . Make sure that the installation conditions
a re satisfactory. Relocate the unit if
n e c e s s a r y.
9 . Keep children away from the unit while it is
being re p a i re d .
1 0 . Be sure to clean the unit and its surro u n d i n g
a re a .
Samsung Electronics
1-1
1. Precautions
Fig. 1-1 Avoid Dangerous Contact
Fig. 1-2 No Tapping and No Extension Cords
Fig. 1-3 No Kids Nearby!
Fig. 1-4 Clean the Unit
1-2
Samsung Electronics
M E M O
Model
Item
Type -
Cooling BTU/h
Dehumiditying I/h
Heating BTU/h
Low temp. heating BTU/h
Air volume Cooling m3/min
Heating m3/min
Noise Cooling dB
Heating dB
Power V-Hz
Power Cooling W
Consumption Heating W
operating Cooling A
Current Heating A
Power Cooling %
factor Heating %
Starting current A
Power cord
Fuse capacity A
Outer Width x Height mm
dimension x Depth inch
Weight kg
Refrigerant pipe Liquid
OD(mm)x L(m)
GAS
Drain hose
ID(mm)x L(m
)
Compressor Type
Motor Type
Rated output W
Blower Type
Motor Type
Rated output W
Heat exchanger
Refrigerant control unit
Freezer oil capacity
Refrigerant to change(R-22)
Protection device
Cooling test Condition
Heating test Condition
Maximum operation Condition
ASHM260VE
Indoor Unit Outdoor Unit
ASHM120VE ASHM070VE
Wall-Mounting
12,000
7,000 12,000 7,000x2
1 2 , 0 0 0 + 7 , 0 0 0 x 2
1.9 1.2 -
13,000 6,500 13,000 6,500x2
1 2 , 0 0 0 + 6 , 5 0 0 x 2
- - -
7.8 6.0 -
8.2 6.2 38 35 56
38 35 56
1 - 220 ~ 240V, ~ 50Hz
35 26 1,320 1,180 2,500
35 26 1,250 1,230 2 350
0.22 0.19 5.8 5.0 10.8
0.22 0.19 5.3 5.3 10.3
- 94.8 98.3 96.4
- 98.2 96.6 95.0
30A
- HO7RNF 2.5
HO5RNF(4G 1mm2)
3.15 3.15 3.15
815x298x182 1000x790x310
32.08x11.73x7.17 39.37x31.10x12.2
9.6 9.6 70.5
ø 6.35x5 ø 6.35x5 ø 12.7x5 ø 9.52x5 -
ø 17x2000
- Rotary
- -
- 1210 1210
Cross-fan Cross-fan Propeller
Resin Resin Die casting
35 26 80
2Row 12Step 2Row 30Step
A-UNIT : CAPILLARY TUBE, B/C-UNIT : AUTO EXPANSION VALVE
- 410 410
- 860 1200
- MRA 12030-12008
INDOOR UNIT : DB27°C WB19°C Outdoor Unit : DB35°C WB24°C
INDOOR UNIT : DB20°C Outdoor Unit : DB7°C WB6°C
INDOOR UNIT : DB32°C WB23°C Outdoor Unit : DB43°C WB26°C
Samsung Electronics
2-1
2. Product Specifications
2-1 Table
Performance
Power
Size
A-UNIT B/C-UNIT
A+B/C UNIT
2-2
Samsung Electronics
2-2 Dimensions
2-2-1 Indoor Unit
2-2-1 Outdoor Unit
Air
in
(Front view)
(Remote control)
(Rear view)
(Front view) (Rear view)
1000 335
660
815 182
Air out
Installation plate
58
22
Samsung Electronics
2-3
2-3 Refrigerating Cycle Block Diagram
2-4
Samsung Electronics
M E M O
Samsung Electronics
3-1
3. Operating Instructions and Installation
3-1 Operating Instructions
3-1-1 Name & Function of Key in remote controller
NO
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
NAME OF KEY
MODE
(UP)
(DOWN)
TURBO
OFF
ON TIMER
OFF TIMER
SET
CANCEL
(UP)
Without regard to ON/OFF condition in remote controller,
use this button to set current time.
Adjust the current time using button.
(Data can be transmitted after setting up the time)
If the button is pressed once, the time decrease by one minute
during the time set mode, and ten minutes during the timer set mode.
If the button is pressed once, the time increase by one minute
during the time set mode, and ten minutes during the timer set mode.
Use this button to reserve or cancel the timer on and timer off.
Use this button to reserve the timer on.
Set up the time that operation stop.
Set up the time that operation start.
Each time you press this button,
FAN SPEED is changed in the following order.
Adjusts air flow vertically.
Each time you press this button,
BLADE-H rotates by 43° (Rotation range 43°)
If the one more time press the button, blades location is stop.
Use this button for sleep operation.
(The SLEEP mode can be selected at COOL and HEAT mode.)
Set up the reservation or cancel the timer on and timer off quickly
Use this button to provide heavy duty cooling & Heating for 30 minutes.
Each time you press this button,
MODE is changed in the following order.
Temp. up button. If the button is pressed once,
the setting temperature is decreased by 1°C
Temp. up button. If the button is pressed once,
the setting temperature is increased by 1°C
On/Off Button. Use this button to start and stop air conditioner.
FUNCTION OF KEY
(DOWN)
TIME
C
O
V
E
R
T
I
M
E
R
3-2
Samsung Electronics
Operating Instructions and Installation
1. A U TO MODE : In this mode, operation
mode(COOL, HEAT, DRY) is selected automatically by the room temperature of initial
o p e r a t i o n .
∆T= -1°, -2°C, 0°C, +1°C, +2°C
∆T is controlled by setting temperature
up/down key of remote contro l l e r
2. C O O L MODE : The unit operates accord i n g
to the diff e rence between the setting and
room temperature. (Setting temperature ;
18°C~30°C)
3. H E AT MODE : The unit operates accord i n g
to the diff e rence between the setting and
room temperature.(Setting temperature ;
16°C~30°C)
* P revention against cold wind : For about
3~5 minutes after initial operation, thermo
c o n t rol or “de-ice”, the indoor fan will
either not operate or operate very slowly(510 rpm), then switch to the selected fan
speed. This period is to allow the indoor
unit's heat-exchanger to prewarm before
emitting warm air.
*High temperature release function : The
outdoor unit fan and compressor ON/OFF
c o n t rol for safety operation, when the heat
exchanger of indoor unit is overh e a t e d .
*De-ice : Deicing operation is controlled by
outdoor unit's heat exchanger temperature
and accumulating time of compre s s o r ' s
o p e r a t i o n .
De-ice end by sensing of the pro c e s s i n g
time and outdoor unit’s heat exchanger
t e m p e r a t u re by de-ice Condition.
4. D RY MODE : Has 3 states, each determined
by room temperature .
The unit operates in DRY m o d e .
*Co m p ressor ON/OFF Time is contro l l e d
compulsorily(can not set up the fan speed,
always bre e z e ) .
* P rotective function : Low temperature
release. (Prevention against fre e z e )
5. TURBO MODE : This mode is available in
A U TO, COOL, HEAT, DRY, FAN MODE.
When this button is pressed at first, the air
conditioner is operated “powerful” state for
30 minutes re g a rdless of the set temperat u re, room temperature .
When this button is pressed again, or when
the operating time (30 minutes) is finished,
turbo operation mode is canceled and
returned to the previous mode.
*But, if you press the TURBO button in DRY
or FAN mode that is changed with A U TO
mode automatically.
6 . S L E E P MODE : Sleep mode is available
only in COOL or HEAT mode.
The operation will stop after 6 hours.
*In COOL mode : The setting temperature
is automatically raised by 1°C each 1hour
When the temperature has been raised by
total of 2°C, that temperature is maint a i n e d .
*In HEAT mode : The setting temperature
is automatically droped by 1°C each 1hour.
When the temperature has been droped by
total of 2°C, that temperature is maint a i n e d .
7. FAN SPEED : Manual (3 step), Auto (4 step)
In Auto mode, fan speed automatically
varies depending on both the diff e re n c e
between setting and the room temperature .
3-1-1 Name & Function of Key in remote controller
Room Temp
Tr≥ 21°C+∆T
21°C +∆T>Tr
Operation Type
Cool Operation (Set Temp:AUTO SETTING)
Heat Operation (Set Temp : 22°C+∆T)
Samsung Electronics
3-3
Operating Instructions and Installation
8 . C O M P U L S O RY O P E R ATION :
For operating the air conditioner without
the remote contro l l e r.
* A U TO : The operating is the same function that A U TO MODE in the remote cont ro l l e r.
9 . SWING : BLADE-H is rotated vertically by
the stepping motor.
*Memory louver : When ON/OFF button is
p ressed at stop state, the BLADE-H re t u r n s
to its original location which is operating
state before stop
*Swing auto : The BLADE-H can ro t a t e
within about 43º set by the SWING SET
b u t t o n .
*Swing Set : Press the button under the
remote control is displayed on LCD the ,
and the blades move up and down, about 43°.
If the one more time press the button,
blades location is stop.
1 0 . Quick OFF TIMER: OFF timer (quick timer)
allows reservation or cancel the timer on
and timer off quickly
When OFF timer button is pressed at operating state, LCD displays the polling state
s e q u e n t i a l l y.
The LCD also displays the time re m a i n i n g .
11 . 24-Hour ON/OFF Real Setting Ti m e r. : The
air conditioner is turned ON at a specified
time using .
OFF TIMER : The air Conditioner is turned
OFF at a specified time using .
*ON TIMER : Only timer LED lights on.
*OFF TIMER : Both timer and operation
LED lights on.
*3 minutes delay timer.
1 2 . TIME SHORTENING : If the "Time short"
connector pin is shorted on the main P. C. B,
the compressor's three minutes delay function is cancelled, and each operation time is
shortened to one fiftieth of its original time.
1 3 . BUZZER SOUND : Whenever the ON/OFF
button is pressed or whenever change
occurs to the condition which is set up or
select, the compulsory operation mode,
buzzer is sounded "beep"
ON TIMER
OFF TIMER
3-4
Samsung Electronics
3-2. Outdoor unit controlling spec (Each load controlling condition)
* Each load is controlled at the outdoor unit
by receiving the operation command of
indoor unit according to the communication
between the indoor unit and outdoor unit.
3-2-1 Outdoor fan control
1. The outdoor fan speed is automatically controlled by outdoor temperature
A) In case of Cooling operation (both comp
A and B, or one of both comps)
*over 28ºC→High speed
*below 26ºC→Low speed
B) In case of Heating operation (both comp
A and B, or one of both comps)
*over 15ºC→Low speed
*below 14ºC→High speed
C) In case of mixing operation of Cooling
and Heating. The outdoor fan is always
operated in Low speed.
3-2-2 Control of compressor
1. A comp : to be controlled on and off according
to the on/off control signal from A room.
2. B comp : (comp control operation by the dehumidifying)
A) If one of two rooms (B and C room) is
under the cooling/heating operation
mode, it shall be in accordance with the
o n / o ff control of B/C ro o m .
B) In case that the B room is under the cool-
ing mode and C is under the dehumidifying mode, it is in accordance with the
o n / o ff signal of C room but when C is
operation off, it is according to the on
/ o ff of B ro o m .
C) In case that B room dehumidifying mode
and C room is under the cooling mode, it
is in accordance with the on/off signal of
B room but when B is operation off, it is
a c c o rding to the on/off of C ro o m .
D) In case that B room dehumidifying mode
and C room is under the dehumidifying
mode, it is in accordance with the on/off
signal of B room but when B is operation
o ff, it is according to the on/off of C
ro o m .
E) In case that C room dehumidifying mode
and B room is under the cooling mode, it
is in accordance with the on/off signal of
B room but when B is operation off, it is
a c c o rding to the on/off of C ro o m .
3-2-3 4-way valve control
1. A comp 4-way valve: It is according to the control of A room 4-way valve.
2. B comp 4-way valve: It is according to the control of B/C room 4 way valve.
3. Defrost control
A) In mixing operation of cooling and heat-
ing if the unit in the heating is changed
to the defrost mode the unit in the cooling keeps its operation.
B) In heating mode of both units If one of
units is changed to the defrost mode the
other is also operated in the defro s t
m o d e .
LOW
HIGH
26˚C 28˚C
HIGH
LOW
14˚C 15˚C
Samsung Electronics
3-5
C) The load delay time has the error of ±9
sec according to the communication
delay time.
4 . B room 4 way valve contro l
When changing over the heating to cooling
in case of B and C room, the 4 way valve is
immediately changed over.
3-2-4 Pulse operated expansion valve control
1 . To use the fixed step under each condition
of operation
2 . The step of dry mode is same as that of
cooling operation.
3 . Maintain the current operation step during
the protection contro l .
4 . If B/C is under the cooling / dry mode, the
step is 136+α/136. (α= 32 step).
5 . When the operation is off, the step is
144/144 step (for balancing the pre s s u re ) .
6 . The initial positioning of pulse operated
expansion valve is performed when any one
room is on while 3 rooms are off .
7 . For initial positioning, close the 512 step
and move it to setting step.
8 . When one of pulse operated expansion
valve B and C completes its initial
positioning, the other one starts the initial
p o s i t i o n i n g .
3-2-5 Bypass valve control
1 . When one room is under the comp on
condition between the B/C , the valve is on.
2 . When both rooms are under the comp on
condition between the B/C , the valve is off .
3 . When B comp is under the defrost opera-
tion, it shall be in accordance with 1) and 2).
4 . When B room is under heating condition, it
is always off .
5 . When the bypass valve is off, it is off after
the positioning completion of pulse operated expansion valve.
Operating Instructions and Installation
3-6
Samsung Electronics
3-3 Installation
3-3-1 Selecting Area for Installation
Select an area for installation that is suitable
to the customer's needs.
3-3-1(a) Indoor Unit
1 . Make sure that you install the indoor unit in
an area providing good ventilation. It must
not be blocked by an obstacle affecting the
airflow near the air inlet and the air outlet.
2 . Make sure that you install the indoor unit in
an area allowing good air handling and
endurance of vibration of the indoor unit.
3. Make sure that you install the indoor unit in
an area where there is no source of heat or
vapor nearby.
4 . Make sure that you install the indoor unit in
an area from which hot or cool air is spre a d
evenly in a ro o m .
5 . Make sure that you install the indoor unit in
an area away from TVs, audio units, cordless phones, fluorescent lighting fixture s
and other electrical appliances (at least 1
m e t e r ) .
6 . Make sure that you install the indoor unit in
an area which provides easy pipe connection with the outdoor unit, and easy
drainage for condensed water.
7. Make sure that you install the indoor unit in
an area which is large enough to accomodate the measurements shown in figure on
the next page.
3-3-1(b) Outdoor Unit
1 . Make sure that you install the outdoor unit
in area not exposed to the rain or direct sun
l i g h t .
(Install a separate sunblind if exposed to
d i rect sun light.)
2 . Make sure that you install the outdoor unit
in area allowing good air movement, not
amplifying noise or vibration, especially to
avoid disturbing neighbours.
(Fix the unit firmly if it is mounted in a
high place.)
3 . Make sure that you install the outdoor unit
in area providing good ventilation. It must
not be blocked by any obstacle affecting the
airflow near the air inlet and the air outlet.
4 . Make sure that you install the outdoor unit
in area free from animals or plants.
5 . Make sure that you install the outdoor unit
in area not blocking the traff i c .
6. Make sure that you install the outdoor unit
in area easy to drain condensed water fro m
the indoor unit.
7. Make sure that you install the outdoor unit
in area which provides easy connection
within the maximum allowable length of a
coolant pipe(10 meters).
Note
1. Add 10 grams of refrigerant (R-22) for
every 1 meter if the pipe length exceeds
the standard pipe length of 5 meters.
2. Maintain a height between the indoor and
outdoor units of less than 3 meters.
8 . Make sure that you install the outdoor unit
in an area which is large enough to accommodate the measurements
shown in figure on the next page.
3-3-1(c) Remote Control Unit
1 . Make sure that you install the remote con-
t rol unit in an area free from obstacles such
as curtains etc, which may block signals
f rom the remote control unit.
2. Make sure that you install the remote cont rol unit in an area not exposed to
d i rect sunlight, and where there is no sourc e
of heat.
3. Make sure that you install the remote cont rol unit in an area away from TVs, audio
units, cordless phones, fluorescent lighting
f i x t u res and other electrical appliances (at
least 1 meter).
Caution :
It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines),
salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for advice.
Samsung Electronics
3-7
Operating Instructions and Installation
3-3-2 Installation diagram of indoor unit and outdoor unit
A Indoor unit gas leak test check point
Tape vinyl
Piping
Indoor unit
B Drain hose installation
Cut the piping hole
sloped slightly
Piping (Liquid) 1/4" Clamper tube
Installation plate
Installation tube Pipe-connection
Vinyl tape Screw
Putty Drain hose
Piping may be laid to the rear, left,
right or down .
Right
Rear
Down
Rear
Left
3
1
5 6
4
1 0
1
2
3
4
5
6
7
8
9
10
2
Remote control
Remote control holder
A-UNIT Piping(Gas)1/2”
B/C-UNIT Piping(Gas)3/8”
3-8
Samsung Electronics
Operating Instructions and Installation
3-3-2(a) Fixing the Installation Plate
3-3-2(b) Purging the Unit
Installation plate
Pipe hole
(ø65mm)
280
(Unit : mm)
340
(Unit : mm)
1. Determine the position of the pipe and drain hose hole
using the left figure and drill the hole with an inner
diameter of 65mm so that it slants slightly downwards.
2. If you are fixing the indoor unit to a… Then follow Steps…
Wall 3.
Window frame 4 to 6.
3. Fix the installation plate to the wall in a manner appropriate to the weight of the indoor unit.
If you are mounting the plate on a concrete wall with
anchor bolts, the anchor bolts must not project by more
than 20mm.
4. Determine the positions of the wooden uprights to be
attached to the window frame.
5. Attach the wooden uprights to the window frame in a
manner appropriate to the weight of the indoor unit.
6. Using tapped screws, attach the installation plate to the
wooden uprights, as illustrated in the last figure opposite.
On delivery, the indoor unit is loaded with an inert gas.
All this gas must therefore be purged before connecting the
assembly piping. To purge the inert gas, proceed as fol lows.
Unscrew the caps at the end of each pipe.
Result : All inert gas escapes from the indoor unit.
• To prevent dirt or foreign objects from getting into
the pipes during installation, do NOT remove the
caps completely until you are ready to connect the
piping.
Samsung Electronics
3-9
3-3-2(c) Connecting the Assembly Cable.
3-3-2(d) Installing and Connecting the Indoor Unit Drain Hose
C a re must be taken when installing the drain hose for the indoor unit to ensure that any condensa tion water is correctly drained outside. When passing the drain hose through the 65mm hole drilled in
the wall, check that none of the following situations occur.
To install the drain hose, proceed as follows.
1. If necessary, connect the 2-metre extension to the drain hose.
2 . If you are using the extension, insulate the inside part of the extension drain hose with a shield.
3. Pass the drain hose under the refrigerant piping, taking care to keep the drain hose tight.
4. Pass the drain hose through the hole in the wall, making sure that it is sloping downwards, as
shown in the illustrations above.
Operating Instructions and Installation
Indoor unit
Outdoor unit
1
(L)2(N)
E
Earth terminal
3
COM
The outdoor unit is powered from the indoor unit via the assembly
cable. If the outdoor unit is more than five metres away from the
indoor unit, the cable must first be extended to a maximum of
ten metre s .
1 . Extend the assembly cable if necessary.
2 . Open the front grille by pulling on the tabs on the lower right and
left sides of the indoor unit.
3 . Remove the screw securing the connector cover.
4 . Pass the assembly cable through the rear of the indoor unit and
connect the assembly cable to terminals 1, 2, 3, 5.
• Each wire is labelled with the corresponding terminal number.
5 . Firmly fix the ass’y cable with clamp wire holder.
6 . Pass the other end of the cable through the 65mm hole in the wall.
7 . Replace the connector cover, carefully tightening the scre w.
8 . Close the front grille.
9 . For further details on how to plug the other end of the assembly
cable into the outdoor unit, refer to page 3-10.
The hose must
NOT slope upw
ards.
The hose will be fixed permanently into position once
the whole installation has been tested for gas leaks;
refer to page 16 for further details.
The end of the drain
hose must NOT be
placed in water.
Do NOT bend the
hose in different
directions.
Keep a clearance of at
least 5cm between the
end of the hose and the
ground.
Do NOT place the end
of the drain hose in a
hollow.
Shield
Drain hose Extension drain hose
3-10
Samsung Electronics
3-3-2(e) Outdoor unit installation
Operating Instructions and
GAS LEAK TEST
WIRING CONNECTION
Indoor unit check point
Outdoor unit check point
Check for gas leak from the flare nut connections with leak detector.
Two electric cables must be connected to the outdoor unit:
• The assembly cable connecting the indoor unit to the outdoor unit.
• The power cable connecting the auxiliary circuit breaker to the outdoor unit.
1 Remove the terminal board cover on the side of the outdoor unit.
2 Connect the assembly cable to terminals 1, 2, 3, 5 and connect the power cable to therminals A to B.
Each wire is labelled with the corresponding terminal number.
E n s u re that the wire number of the indoor unit and the terminal number of the outdoor unit.
3 Connect the earthing wires to the earth terminals.
Refer to the page opposite for further details on how to check that earthing is corre c t .
4 Replace the terminal board cover, carefully tightening the screw.
5 connect the power cable to the auxiliary circuit breaker.
Indoor unit
Outdoor unit
1
(L)
3
COM
3
COM
1
(L)
1
(L)
2
(N)1(L)
2
(N)
2
(N)
2
(N)
A-unit
Earth
terminal
Earth
terminal
Circuit Breaker
(Main Power)
Earth
terminal
Earth
terminal
B-unit C-unit
Samsung Electronics
3-11
Grounding
Installation of drain line
(The parts for this work are optional.)
• A g rounding terminal can be found on
the outdoor unit as illustrated.
In heating and “de-ice” operation, condensed
water may be generated.
Install drain line as following pro c e d u re .
1. Insert drain plug into hole and then connect
drain hose to drain plug.
* Inside diameter of drain hose is 18mm
1. When an existing grounding terminal is
a v i l a b l e .
( G rounding wire of ø1.6mm or larg e r < s o l i d
w i re>or 2mm2or larger <standard wire>)
2 . Use of a grounding electro d e .
• Specifications of grounding electro d e .
Terminal used
exclusively for
grounding.
Carbon plastic Steel core
PVC-insulated wire(2mm2x3.5m), green Terminal, M4
Drain hole
Drain plug
Grounding resistance:
less than 100 ohms
(existing grounding electrode)
Grounding screw hole
Operating Instructions and Installation
3-12
Samsung Electronics
Operating Instructions and Installation
3-3-2(f) Flare Modification
Flare modification procedure
1 ) Cut the pipe using a pipe cutter.
• Tools used
2 ) Remove burrs at the tip of the pipe cut.
C a u t i o n : Burrs not removed may result in
leakage of gas.
3 ) Insert a flare nut into the pipe and modifty flare .
* Unproper flaring
Outer diameter A(mm)
ø6.35mm 1.3
ø9.52mm 1.8
ø12.7mm 2.0
Oblique
90°
Raughness
Burr
Pipe
Reamer
Inclined Surface
damaged
Cracked Uneven
thickness
D
A
Samsung Electronics
3-13
3-3-2(g) Air-Purge Procedure
When refrigerant piping is complete, perform an airpurge in the set up shown below.
1 . INDOOR A U N I T
1 - 1 Connect the charging hose to the
packed valve having a charging
p o r t .
1 - 2 Loosen the liquid-side (1/4") flare nut.
1 - 3 Open gas container valve to lead
refrigerant (R-22) into the connection
pipeline and thus to discharge internal
a i r.
1 - 4 When the refrigerant gas blows out
following air, close the gas container
v a l v e .
1 - 5 Tighten the liquid-side (1/4") flare nut.
2 . INDOOR B UNIT
Perform air purge as instructed in steps (1-1)
t h rough (1-5) above.
3 . INDOOR C-unit
Perform an air purge as instructed in steps (1-1)
t h rough (1-5) above.
4 . Open the valve stem until it hits against the
s t o p p e r.
It is not necessary to try to open it further.
5 . S e c u rely tighten the valve stem cap with a
w rench or the like.
Prior to performing a gas purge, prepare an additional
volume of refrigerant (R-22) separately.
Refrigerant for air purge is not charged in the outdoor
unit. Use separate refrigerant for air purge.
INDOOR
A-UNIT
INDOOR
B-UNIT
INDOOR
C-UNIT
Pipeline
Valve cork
Pipeline
Low pressure hose
Structure of 3-way valve
Outdoor
unit
CAUTION
Operating Instructions and Installation
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