Argo AMG21SDT Manual

TECHNICAL DATA & SERVICE MANUAL
AMG21SDT
AMG21CDT
0.8180.367.0 05/2004

Pa
g
e
1. SPECIFICATIONS 3
1-1 Unit Specifications 3
1-2 Major Component Specifications 4
2. DIMENSIONAL DATA 6
2-1 Unit Dimensions 6
3. ELECTRICAL DATA 7
3-1 Electric Wiring Diagram 7
4. REFRIGERANT FLOW DATA 8
4-1 Refrigerant Flow Diagram 8
5. FUNCTION 9
5-1 Room Temperature Control 9
5-2 Heat Exchanger Frosting Prevention 9
5-3 Dry Operation (Dehumidification) 10
6. PERFORMANCE DATA 11
6-1 Performance Chart 11
7. TROUBLESHOOTING 12
7-1 The unit does not work 12
7-2 Electrical circuit interrupted after "ON" button is pressed 12
7-3 Electrical circuit interrupted 3 minutes after "ON" button is pressed 13
7-4 Fan motor does not work while "ON" button is pressed 13
7-5 Fan works at one speed only 14
7-6 Poor cooling 14
7-7 Fan motor works normally but the compressor does not operate 15
2

1. SPECIFICATIONS
1-1 Unit Specifications
Power source
V
olta
g
e ratin
g
Performance
Capacity (1) (1) W
Efficiency (2) (2) W/W
Air flow rate (evaporator) Hi/Lo m³/h
Air flow rate (condenser) Hi/Lo m³/h
Moisture removal l/h
Moisture removal (3) l/24h
Moisture removal (4) l/24h
Electrical ratin
g
s
Available voltage range V
Power input W
Running amperes A
Power input (3) W
Running amperes (3) A
Power input (4) W
Running amperes (4) A
Compressor locked rotor A
Features
Controls/Temperature controls
Control unit
Timer
Fan speed
Air Filter
Operation sound Lp (5) Hi/Lo dB(A)
Compressor
Refrigerant / Amount charged at shipment g
Refrigerant control
Water tank capacity liters
Flexible exhaust tube I.D. mm
extended length m
Hole in the window mm
Electric cable with plug length m
Dimensions & Wei
g
ht
Unit dimensions Height mm
Width mm
Depth mm
Package dimensions Height mm
Width mm
Depth mm
Volume m³
Weight Net kg
Shipping kg
Data subject to change without notice
Rating conditions
(1) Cooling indoor air temperature: 27 °C d.b. , 19 °C w.b
(2) Cooling indoor air temperature: 35 °C d.b. , 24 °C w.b
(3) Dehumidification indoor air temperature: 27 °C d.b. , 21 °C w.b , 60% u.r.
(4) Dehumidification indoor air temperature: 30 °C d.b. , 27 °C w.b , 80% u.r.
(
5
)
Reference data: room size 100 m3
,
reverberation time 0
,
5 s
,
distance 2 m
Operating limits maximum minimum
Indoor air temperature Cooling 35 °C d.b. , 24 °C w.b 15 °C d.b. , 12 °C w.b
Dehumidification 35 °C d.b. , 28 °C w.b 10 °C d.b. , 6,5 °C w.b
41
Washable
115
1
138
32
577
483
0,31
476
- 3,5
-
21
42
290 / 240 240
1-
-
700 -
198 - 264
310 / 260 260
2,75
-23
-
220 - 240 V ~ 50 H
z
230 V
COOLING DEHUMIDIFICATION
WITH AIR EXHAUSTING TUBE WITHOUT AIR EXHAUSTING TUBE
2100
870
770
13
55 / 51 51
Rotary (hermetic)
2,9
1110
-3,3
Microprocessor / I.C. Thermostat
Switches on the uni
t
710
- 3,2
-
-
R410A / 470
Capillary tub
e
~ 3,3
390
3

1-2 Major Component Specifications
Controller PCB (CE) RY2
Controls Electronic
setting °C 15 ± 1,5 ÷ 31 ± 2
differential °C 0,9 ± 0,2
Starting delay time 3 min ± 10 s
ON / OFF
COOLING / FAN
HIGH / LOW FAN
ALARM LAMP
capacity VA 1,5
primary V 220
secondary V 10,5
coil resistance primary (20°C) Ω2754 ± 10%
coil resistance secondary (20°C) Ω17,1 ± 10%
Thermistor (coil sensor) (TH1) NTC
open °C 1 ± 1
close °C 6 ± 1
-20 °C: 5846 ± 5% ; 20 °C: 604 ± 5%
-10 °C: 3159 ± 5% ; 30 °C: 368 ± 5%
0 °C: 1766 ± 5% ; 40 °C: 230 ± 5%
10 °C: 1018 ± 5% ; 50 °C: 147 ± 5%
Thermistor (room sensor) (TH2) NTC
10 °C: 1018 ± 5% ; 30 °C: 368 ± 5%
15 °C: 781 ± 5% ; 35 °C: 290 ± 5%
20 °C: 604 ± 5% ; 40 °C: 230 ± 5%
25 °C: 470 ± 5% ; 50 °C: 147 ± 5%
Fan & Fan Motor (FM) M01974
Type Centrifugal blower
Q'ty ……. Dia. and lenght mm 1…. Ø 170 / L 156
No. Of poles 4
Rpm Hi / Lo speed 1275 / 1058 with flexible exhaust tube retracted
Power input (230 V) W (Hi / Lo) 109 / 80
GREY-WHITE: 87,3 ÷ 101
WHITE-VIOLET: 36,2 ÷ 41,6
VIOLET-YELLOW: 22,8 ÷ 26,3
YELLOW-PINK: 22,8 ÷ 26,3
GREY-BROWN: 51,9 ÷ 59,6
type Thermostat
open °C 150 ± 10
close °C Automatic
(C1)
µF 3
VAC 450
Float microswitch (MS) CROUZET F83161.3
Contact rating 16(4) A - 250 VAC
up open
down close
Power relay (compressor) (PR) OMRON G4F
Contact rating 20 A - 250 V
Coil supply VDC 12
Coil resistance (20 °C) Ω158 ± 10%
Compressor (CM) Rotary (hermetic)
Model
Nominal input (230 V) W
Compressor oil cc
C - R Ω
C - S Ω
Data subject to change without notice
Coil resistance ( 20°C)
Coil resistance (25°C ) Ω
Safety devices
Run capacitor
operating temp.
Resistance Ω
Trasformer
Function selection and indicator lamp
ΩResistance
5,56 ± 7%
5RS080EAA (R410A)
675
300
5,19 ± 7%
4

Safety devices (OLR) EXTERNAL TYPE
Type
open °C
close °C
Operating amperes (25 °C) open with
Run capacitor (compressor) (C3)
µF
VAC
Condensate pump (PC)
Model
Nominal input (230 V) W
Winding resistance Ω
Pump relay (RP) H62S
Contact rating 5 A - 220 V
Coil supply VAC 230
Coil resistance (20 °C) kΩ17,2 ± 10%
Heat exchanger coil EVAPORATOR COIL
Coils Aluminium fin - 3/8" Copper tube
Rows 4
Fin pitch mm
Face area m² 0,042
Heat exchanger coil CONDENSER COIL
Coils Aluminium fin - 7mm Copper tube
Rows
Fin pitch mm
Face area m² 0,084
Data subject to change without notice
Operating temperature
1,8
5
1,3
20
450
291036
5
778 ± 8%
MRA99137 - 9201
145 ± 5 °C
69 ± 9 °C
14 A in 6 ÷ 16 s
5

2. DIMENSIONAL DATA
2-1 Unit Dimensions
6

3. ELECTRICAL DATA
3-1 Electric Wiring Diagram
4,9 32
COMPRESSOR CM/C
CAPACITOR Cx
ELECTRIC HEATER RE
FAN MOTOR FMI/MV BLACK BLK
OVERLOAD PROTECTOR OLR/K BLUE BLU
ELECTRONIC CONTROL CE BROWN BRN
COMPRESSOR RELAY PR/RC GREEN/YELLOW GRN/YEL
CONDENSATE PUMP PC ORANGE ORG
PUMP RELAY RP RED RED
DEHUMIDIFIER SWITCH ID WHITE WHT
FLOAT MICROSWITCH MS YELLOW
Y
EL
ELECTRIC HEATER RELAY RR GREEN GRN
SENSOR TH1/S PINK PN
K
THERMOFUSE TF
SAFETY THERMOSTAT TS
PROGRAMMER P
Legend of colors
7

4. REFRIGERANT FLOW DATA
4-1 Refrigerant flow diagram
8

5. FUNCTION
5-1 Room Temperature Control
Room temperature control is obtained by cycling the compressor ON and OFF by means of room
temperature sensor TH1
minimum
3 minutes
ON/OFF SWITCH
COMPRESSOR
SWITCH
COMPRESSOR ON
SET
TEMPERATURE +1°C
SET
TEMPERATURE
FAN SET SPEED
NOTES
1. If the compressor is turned off, the control circuit sets an automatic minimum 3 minutes delay to protect
the compressor from stalling out when trying to start against the high side refrigerant pressure.
2. If the room temperature is 1°C above the set temperature, the compressor starts working if this has been
OFF for at least 3 minutes.
3. If the room temperature is the same or under the set temperature the compressor stops working.
5-2 Heat Exchanger Frosting Prevention
The electronic control stops automatically the compressor each time the coil sensor TH1 reaches a
temperature of 1 °C for 8÷10 minutes long, the compressor starts again automatically when the
temperature of heat exchanger reaches 8 °C. the fan goes "ON" working at the set speed.
minimum minimum
10 minutes 3 minutes
ON/OFF SWITCH
COMPRESSOR
SWITCH
COMPRESSOR
HEAT EXCHANGER
TEMP. = 8°C
HEAT EXCHANGER
TEMP. = 1°C
FAN SET SPEED
ON
ON ON
ON
ON
ON
ON
9

5-3 Dry Operation (Dehumidification)
AMBIENT
TEMPERATURE
MAX. 35 °C
- PUSH BUTTON COOL/DRY.
- COMPRESSOR "ON".
- LOW SPEED.
- AMBIENT THERMOSTOR BY-PASSED.
- COMPRESSOR OFF AFTER 10 MIN. WITH AMBIENT TEMPERATURE AT 10 °C.
- UNIT WITHOUT AIR RXHAUSTING TUBE.
MIN. 10 °C
MIN. 10 MIN.
AMBIENT
TEMPERATURE
10 °C ±1 °C
BUTTON COOL/DRY
COMPRESSOR OFF
FAN
LED YELLOW
LOW SPEED
ON
MIN. 3 MIN.
DRY POSITION
ON OFF ON
10

6. PERFORMANCE DATA
6-1 Performance Chart
4,9 32
Operating characteristics with relative humidity around 50%
2,50
3,00
3,50
4,00
4,50
5,00
18 20 22 24 26 28 30 32 34 36
Room temperature (°C)
Operating current (A)
11

7. TROUBLESHOOTING
7-1 The unit does not work
Check the voltage. Are NO Check the unit YES Check the electrical
there 198 ÷ 264 volts ? electrical cable supply line
YES
If it is impossible to
Check if programmer NO close the contact,
contact is closed (black - replace the
brown cables). programmer.
(IF INSTALLED)
YES
Check if there is supplied NO Check if tank micro -
voltage between 1-2 switch contacts are
the electric control (CE) closed.
(1 - 2 MT contacts)
YES NO
Replace the electronic Check if the pilot NO Is the flickering alarm
control (CE) lamp is burnt. lamp on the control
Eventually replace it panel not visible ?
7-2 Electrical circuit interrupted after "ON" button is pressed
Check the unit hardness NO Insulate the short
Is it insulated ? circuit cable
YES
Check if the fan motor is NO Replace the fan motor
working (FMI) (FMI)
YES
Check the electronic NO Replace the electronic
control (CE) control (CE)
YES
Check the leds printed NO Replace the leds
circuit. printed circuit.
NO
Check the motor YES Replace the
programmer (P). Is it programmer (P)
short circuited?
(IF INSTALLED)
12

7-3 Electric circuit interrupted 3 minutes after "ON" button is pressed
COOLING
OPERATION
Check if compressor relay NO Rebuild the
connections are connections.
insulated.
YES
Check if compressor relay YES Replace the
works. compressor relay
Is it in short circuit ? (PR)
NO
Check if compressor
winding are short
circuited.
YES
Replace the
compressor(CM)
7-4 Fan motor does not work while "ON" button is pressed
YES NO NO
Check hardness and Fit the fan motor Remove obstruction
various continuities properly or replace or replace fan motor
YES it assembly
Check the capacitor NO Replace the capacitor
capacity (C)
YES
Check the fan motor INTERRUPTED Replace the fan motor
windings (FMI). assembly
YES
Replace the electronic
control (CE)
Disconnect the unit from line. Check if the fan motor is well
fitted and if the blades can rotate
13

7-5 Fan works at one speed only
Check electrical conec- NO Fit electrical connec -
tions. Is there continuity ? tions properly
YES
Check power supply NO Replace the electronic
between 1-7(high) or control (CE)
1-8(low) electronic control
contacts (CE)
YES
Check fan motor winding
values (MV)
YES
Replace fan motor (MV)
7-6 Poor cooling
Is the unit cooling capacity NO Suggest a more power-
suitable for the room ful unit
thermal loads ?
YES
Are both air filters and heat NO Clean filters and / or
exchanger cleaned ? heat exchanger
YES
Check if Difference bet- YES The unit works properly
ween room air
temperature and outlet air
delivered is up to 10 °C
NO Low NO
gas charge
Proceed with
normal operations
foreseen for the
above points
14

7-7 Fan motor works normally but the compressor does not operate
Check hardness
and continuity. Is the
relay compressor
coil (PR white cable)
power supplied ?
YES
Replace the relay NO Check if relay YES Is the thermostat in NO Adjust thermostat
(PR) contects are closed the right position ? position
YES YES
Replace klixon (ORL) YES Check compressor Is room tempera - NO The unit cannot
klixon contacts (ORL) ture over 15 °C ? operate below
Are they open ? 15 °C
NO YES
Replace the NO Check the capaci - Check the sensor NO Replace the
capacitor (C) tor capacity (C) continuity (TH2) sensor (TH2)
through 9-10
electronic control
YES (CE) terminal
blocks
YES
Replace the NO Check the com - Check electronic
compressor pressor winding control (CE)
continuity
15

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Tel. [phone] - Fax [phone]
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