Technibel MTV72C5 Manual

TECHNICAL DATA & SERVICE MANUAL
MTV72C5 (R407C)
MTF73C5 (R410A)
0.8180.230.1 06/2003

Pa
g
e
1. SPECIFICATIONS 3
1-1 Unit Specifications 3
1-2 Major Component Specifications 5
2. DIMENSIONAL DATA 6
2-1 Unit Dimensions 6
3. ELECTRICAL DATA 6
3-1 Electric Wiring Diagram 6
4. REFRIGERANT FLOW DATA 7
4-1 Refrigerant Flow Diagram 7
5. FUNCTION 8
5-1 Room Temperature Control 8
6. PERFORMANCE DATA 9
6-1 Performance Chart 9
7. TROUBLESHOOTING 10
7-1 The unit does not work 10
7-2 Circuit breaker trips when "ON" button is pressed 10
7-3 Fan motor does not work while "ON" button is pressed 11
7-4 Fan works at one speed only 11
7-5 Poor cooling 11
7-6 Fan motor works normally but the compressor does not operate 12
2

1. SPECIFICATIONS
1-1 Unit Specifications
MTV72C5 (R407C)
Power source
V
olta
g
e ratin
g
Performance (1)
Ca
p
acit
y
W
Air flow rate (evaporator) Hi/Lo m³/h
Air flow rate (condenser) Hi/Lo m³/h
Moisture removal l/h
Moisture removal (2) l/24h
Moisture removal (3) l/24h
Electrical ratin
g
s(1)
Available voltage range V
Power input W
Running amperes A
Power input (2) W
Running amperes (2) A
Power input (3) W
Running amperes (3) A
Compressor locked rotor A
Features
Controls/Temperature controls
Control unit
Fan speed
Air Filter
Operation sound Lp (4) 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
Rating conditions
(1) Cooling indoor air temperature: 27 °C d.b. , 19 °C w.b
(2) Dehumidification indoor air temperature: 27 °C d.b. , 19 °C w.b , 60% u.r.
(3) Dehumidification indoor air temperature: 30 °C d.b. , 27 °C w.b , 80% u.r.
(
4
)
Referin
g
data: room size 100 m3, reverberation time 0,5 s , distance 2 m
Operating limits
Cooling
Dehumidification
35
Data subject to change without notice
565
30
0,28
450
861
455
356
1110
62 / 57
1
138
2,7
17
Manual thermostat
Washable
2
- 740
- 3,4
- 3,2
700 -
3,4 -
-
22
-35
WITHOUT AIR EXHAUSTING TUBE
1700 -
198 - 264
0,5 -
-
280 / 230 260 / 200
220 / 180
220 - 240 V ~ 50 H
z
230 V
Rotary (hermetic)
R407C / 420
Switches on the uni
t
- 680
COOLING DEHUMIDIFICATION
WITH AIR EXHAUSTING TUBE
Indoor air temperature
Capillary tub
e
maximum
35 °C d.b. , 24 °C w.b
35 °C d.b. , 24 °C w.b
minimum
19 °C d.b. , 14 °C w.b
19 °C d.b. , 14 °C w.b
~ 3
115
3

MTF73C5 (R410A)
Power source
V
olta
g
e ratin
g
Performance (1)
Ca
p
acit
y
W
Air flow rate (evaporator) Hi/Lo m³/h
Air flow rate (condenser) Hi/Lo m³/h
Moisture removal l/h
Moisture removal (2) l/24h
Moisture removal (3) l/24h
Electrical ratin
g
s(1)
Available voltage range V
Power input W
Running amperes A
Power input (2) W
Running amperes (2) A
Power input (3) W
Running amperes (3) A
Compressor locked rotor A
Features
Controls/Temperature controls
Control unit
Fan speed
Air Filter
Operation sound Lp (4) 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
Rating conditions
(1) Cooling indoor air temperature: 35 °C d.b. , 24 °C w.b
(2) Dehumidification indoor air temperature: 27 °C d.b. , 21 °C w.b , 60% u.r.
(3) Dehumidification indoor air temperature: 30 °C d.b. , 27 °C w.b , 80% u.r.
(
4
)
Referin
g
data: room size 100 m3, reverberation time 0,5 s , distance 2 m
Operating limits
Cooling
Dehumidification
Indoor air temperature
Capillary tub
e
maximum
35 °C d.b. , 24 °C w.b
35 °C d.b. , 24 °C w.b
minimum
19 °C d.b. , 14 °C w.b
19 °C d.b. , 14 °C w.b
~ 3
115
220 - 240 V ~ 50 H
z
230 V
Rotary (hermetic)
R410A / 380
Switches on the uni
t
- 670
COOLING DEHUMIDIFICATION
WITH AIR EXHAUSTING TUBE WITHOUT AIR EXHAUSTING TUBE
1500 -
198 - 264
0,5 -
-
300 / 230 280 / 200
200 / 160 240 / 180
19
-40
- 2,9
825 -
3,6 -
- 710
- 3,2
13
Manual thermostat
Washable
54 / 50 54 / 52
2
1
138
2,7
450
861
455
356
1110
35
Data subject to change without notice
565
30
0,28
4

1-2 Major Component Specifications
Thermostat (TA)
Controls
setting °C
differential °C
Full tank indicator lamp (IL)
ON / OFF switch (SW1)
HI / LO speed switch (SW2)
Fan & Fan Motor (FM)
Type
Q'ty ……. Dia. and lenght mm
No. Of poles
Rpm Hi / Lo speed
Nominal input (230 V) W
type
open °C
close °C
(C1)
µF
VAC
Float microswitch (MS)
Contact rating
up
down
Power relay (compressor) (PR)
Contact rating
Coil supply
Coil resistance (20 °C) Ω
Compressor (CM)
Model 80203245 (R407C) 5RS080EAA (R410A)
Nominal input (230 V) W 620 550
Compressor oil cc 370 300
C - R Ω4,7 ± 7% 5,2 ± 7%
C - S Ω6,8 ± 7% 5,5 ± 7%
Safety devices (OLR)
Type MRA98730 (R407C) MRA99137 (R410A)
open °C 130 ± 5 °C 145 ± 5 °C
close °C 69 ± 11 °C 69 ± 9 °C
Operating amperes (25 °C) open with 13 A in 6 ÷ 16 s 14 A in 6 ÷ 16 s
Run capacitor (compressor) (C2) R407C R410A
µF 15 20
VAC 450 450
Heat exchanger coil
Coils
Rows
Fin pitch mm 1,8 (R407C) 1,3 (R410A)
Face area m² 0,032 (R407C) 0,034 (R410A)
Heat exchanger coil
Coils
Rows 4 (R407C) 5 (R410A)
Fin pitch mm 1,8 (R407C) 1,3 (R410A)
Face area m² 0,072 (R407C) 0,067 (R410A)
Data subject to change without notice
Ω
Safety devices
Run capacitor
operating temp.
Operating temperature
Thermostat
Coil resistance ( 20°C)
Coil resistance (20 °C )
TR2 9215
Manual
16,5 ± 1,5 ÷ 31,5 ± 2
1,5 ± 1
21W02000D1 250 V - T 90 °
C
2905-F 16 A (4) - 250
V
2905-F 16 A (4) - 250
V
M01852
Centrifugal blowe
r
1…. Ø 170 / L 156
4
Cooling: 1280 / 1060 ; Dehumidification: 1250 / 100
0
110
BLU-BLK: 85 ± 7%
WHT-BLK: 135 ± 7%
BLK-BRN: 112 ± 7%
Thermosta
t
150 ± 10
Automati
c
3,15
450
CROUZET F83161.
6
12(3) A - 250 VAC
open
close
FINDER 65.31
30 A - 250
V
230 V ~ 50 H
z
7250 ± 10%
Rotary (hermetic)
External typ
e
Evaporator coil
Aluminium fin / Copper tub
e
4
Condenser coil
Aluminium fin / Copper tub
e
5

2. DIMENSIONAL DATA
2-1 Unit Dimensions
3. ELECTRICAL DATA
3-1 Electric Wiring Diagram
CAPACITOR
Cx
BLACK
BLK
COMPRESSOR
CM
BLUE
BLU
FAN MOTOR
FM
BROWN
BRN
INDICATING LAMP
IL
GREEN/YELLOW
GRN/YEL
SAFETY FLOAT SWITCH
MS
GRAY
GRY
OVERLOAD PROTECTOR
OLR
ORANGE
ORG
COMPRESSOR RELAY
PR
PINK
PNK
ON / OFF SWITCH
SW1
RED
RED
FAN SPEED SWITCH
SW2
VIOLET
VLT
AMBIENT THERMOSTAT
TA
WHITE
WHT
TERMINAL BLOCK
TP
YELLOW
YEL
Legend of colors
6

4. REFRIGERANT FLOW DATA
4-1 Refrigerant flow diagram
7

5. FUNCTION
5-1 Room Temperature Control
Room temperature control is obtained by cycling the compressor ON and OFF by means of room
temperature thermostat
ON / OFF SWITCH
COMPRESSOR ON
+1,5 K
SET
TEMPERATURE
FAN SPEED SWITCH
NOTE
Allow 3 minutes before restarting the unit by the on / off switch or thermostat knob.
ON
ON
SET SPEED
8

6. PERFORMANCE DATA
6-1 Performance Chart
4,9 32
Operating characteristics with relative humidity around 50%
MTV72C5 (R407C)
MTF73C5 (R410A)
2,5
3
3,5
4
18 20 22 24 26 28 30 32 34 36
Room temperature (°C)
Operating current (A)
2,5
3
3,5
4
18 20 22 24 26 28 30 32 34 36
Room temperature (°C)
Operating current (A)
9

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
Check if thermostat NO Check the ambient YES
contact temperature must be Replace the thermostat
is closed (C-2) over 16,5°C
YES
Check if there is voltage NO Check if tank micro -
on the on/off switch (SW1) switch contacts are
(contact is closed 2-4) closed
(1 - 2 MS contacts)
NO
Check if the pilot NO Is the flickering alarm
lamp is burnt. lamp on the control
Eventually replace it panel not visible ?
7-2 Circuit breaker trips when "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 (FM) (FM)
YES
Check if compressor relay NO Fir electrical
connections are insulated connections properly
YES
Check if compressor relay YES Replace the compressor
works. Is it in short circuit? relay
NO
Check if compressor YES Replace the
windings are in compressor
short circuit
10

7-3 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 or replace fan motor
YES replace it assembly
Check the capacitor NO
capacity (C)
YES
Check the fan motor INTERRUPTED Replace the fan motor
windings (FM) assembly
7-4 Fan works at one speed only
Check electrical connections. NO Fit electrical connections
Is there continuity ? properly
YES
Check fan motor winding NO
values (FM) Replace fan motor (FM)
7-5 Poor cooling
Is the unit cooling capacity NO Suggest a more
suitable for the room powerful 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
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
fitted and if the blades can rotate
Disconnect the unit from line. Check if the fan motor is well
Replace the capacitor
The unit works properly
11

7-6 Fan motor works normally but the compressor does not operate
Check hardness
and continuity. Is the
relay compressor
coil 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
YES Check compressor Is room tempera - NO The unit cannot
klixon contacts (ORL) ture over 19 °C ? operate below
Are they open ? 19 °C
NO YES
Replace the NO Check the capaci - Replace the
capacitor (C) tor capacity (C) thermostat
YES
Replace the NO Check the com - YES Temperature of NO Compressor rotor
compressor pressor winding compressor is locked
continuity abnormally high
YES
Refrigerant gas Replace
shortage compressor
YES
Check
gas likage
YES
Vacuum and
charge
refrigerant gas
Replace klixon (ORL)
12

R.D. 28 Reyrieux BP 131 - 01601 Trévoux CEDEX France
Tél. [phone] - Fax [phone]
R.C.S. Bourg-en-Bresse B 759 200 728