Technibel MTV72C5, MTF73C5, MTF74C5 Technical Data & Service Manual

TECHNICAL DATA & SERVICE MANUAL

MTV72C5 (R407C)

MTF73C5 (R410A)

0.8180.230.1 06/2003

Page

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

oltage 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)

Refering 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

oltage 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)

Refering 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 Ω

4,7 ± 7% 5,2 ± 7%

C - S Ω

6,8 ± 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

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Tél. [phone] - Fax [phone]

R.C.S. Bourg-en-Bresse B 759 200 728