Westric AM Series Instruction Manual

76-1007-06 Página 1 de 37

76-1007-06 Página 2 de 37

76-1007-06 Página 3 de 37
TABLE OF CONTENTS
CHAPTER PAGE No.
Index 3
Product codes 5
General characteristics 7
Technical Data Sheet - Dimensions of types AM-300 / AM-500 / AM-600 / AM-700 8
Technical Data Sheet – Single-phase types AM-300 / AM-500 / AM-600 9-10
Technical Data Sheet - Three-phase types AM-500/ AM-600 / AM-700 11-12
Checking of equipment upon receipt 13
Table of recommended cable sizes 14
Refrigeration circuit 15
Electric circuit – Single-phase types AM-300 / AM-500 / AM-600 16-17
Electric circuit – Three-phase types AM-600 / AM-700 18-21
Maintenance 22-23
General troubleshooting guide 24
SW-302 Sequencing Unit – Product Description 25
Dimensions of SW-302 Sequencing unit 26
Installation 27
General interconnection Diagram 28
Interconnection Diagram of Sequencing unit with 2 single-phase air conditioners 29
Interconnection Diagram of Sequencing unit with 2 three-phase air conditioners 30
Operation Mode 31-33
Terminal blocks 34
Flow Diagram of parameter visualization and adjustment 35-37

76-1007-06 Página 4 de 37

76-1007-06 Página 5 de 37
DESCRIPTION
AM Series Westric Air Conditioning units are entirely manufactured by Multicontrol SA. They are designed to
condition small communication shelters, radio transmission rooms and all those applications requiring compact and
reliable equipment for continuous operation.
PRODUCT CODING

76-1007-06 Página 6 de 37

76-1007-06 Página 7 de 37
General Characteristics
Terminal strips: they allow to connect the control panel with the unit and with power supply.
Heating unit with self-adjusting carter, guaranteeing constant temperature at the compressor base, especially
during winter, thus preventing the refrigeration gas to contaminate with oil and avoiding the migration of oil into
the refrigeration circuit.
Electronic Speed Control (CVTR). It adjusts the speed of the condenser motor. A sensor located in the
condenser coils detects the gas temperature and keeps pressure stable when the unit works under low
outdoor temperatures.
Dehydrating filter. First quality molecular sieve type, preventing humidity or impurities to get into the
refrigeration circuit.
Washable air filter cartridges.
Cabinet made of galvanized and pre-painted steel sheet, assuring a long, maintenance-free life.
High-efficiency hermetically-sealed compressor, designed for continuous operation.
Electric motors, especially designed for continuous operation.
High- and low-pressure pressure switches protect the system against gas leaks, clogged filters or coils, burnt
motors, etc, thus insuring long system life.
Electrical resistors for heating, located in accesible places.
Bronze valves for gas charge or pressure measurement, located in accesible places and easy to operate, thus
simplifying inspection or maintenance.
Evaporation and condensation coils, built with aluminum fins and mechanically expanded copper tubes, which
insure efficient heat transfer even in extreme conditions.
Fans. High efficiency centrifugal type for the evaporator. Low noise axial type for the condenser
Economizer: The economizer system starts working when the outdoor temperature falls below 12°C. Then the
external thermostat cancels the control signal to the compressor and triggers the opening of a motor-driven
blind which lets outdoor air into the room, thus lowering the temperature to the desired value, as controlled by
the sequencing unit.
When the temperature reaches the desired value, the blind is closed and the air conditioner remains in
ventilation mode. If the outdoor temperature rises above 12°C, the blind is closed and the compressor is
started up, as long as the room temperature so requires.

76-1007-06 Página 8 de 37
TECHNICAL DATA SHEET – DIMENSIONS OF AM-300 / AM-500 / AM-600 / AM-700 UNITS

76-1007-06 Página 9 de 37
Technical characteristics – Technical data sheets of types: AM-300 / 500 / 600 (single-phase)
DESCRIPTION UNITS AM-300 AM-500 AM-600
DIRECT EXPANSION UNIT - CHARACTERISTICS
TYPE - SELF-CONTAINED
BRAND NAME - WESTRIC
MANUFACTURING STANDARD - ISO-9001
COUNTRY OF ORIGIN - ARGENTINA
TYPE - AM-300 AM-500 AM-600
CAPACITY Kwf 3,5 5,8 7,2
POWER SUPPLY - 220V - 50Hz - 1
F
220V - 50Hz - 1
F
220V - 50Hz -1 F
POWER DEMAND Kw 1,7 2,5 3,3
FLOW RATE m3/min 13 18 22
DIMENSIONS
WIDTH mm 820
HEIGHT mm 1460
DEPTH mm 450
WEIGHT OF COMPLETE UNIT Kg. 120 134 140
COMPRESSOR CHARACTERISTICS
TYPE - HERMETICALLY SEALED
BRAND NAME - L'U.Hermetique L'U.Hermetique Copeland
TYPE - AH-5515 AH-5524 ZR-28K3E-PFJ
COUNTRY OF ORIGIN - FRANCE FRANCE USA
NUMBER - 1 1 1
POWER DEMAND W 1.400 1.940 2.500
CURRENT Amp. 7,2 9.2 10,3
CHARGE OF R-22 GAS Kg 1,35 2,1 2,5
EVAPORATOR BLOWER CHARACTERISTICS
BRAND NAME - REVCOR
COUNTRY OF ORIGIN - USA
TYPE - CENTRIFUGAL
DIAMETER mm 160
WIDTH mm 215
NUMBER - 2
COUPLING - DIRECT
EVAPORATOR BLOWER MOTOR CHARACTERISTICS EVAPORADOR
BRAND NAME - DAVICA
TYPE - FR-6204 FR-6204 FR-4301
COUNTRY OF ORIGIN - ARGENTINA
POWER DEMAND W 104 104 170
CURRENT Amp. 0,5 0,5 0.85
VOLTAGE Volt 220
TRANSMISSION - DIRECT
BEARINGS - YES
CONDENSER BLOWER CHARACTERISTICS
BRAND NAME - TRIMET
COUNTRY OF ORIGIN - ARGENTINA
TYPE - AXIAL
DIAMETER - 400 400 400
NUMBER N° 1 1 1
FLOW RATE cu.m/min 38 38 38
COUPLING - DIRECT

76-1007-06 Página 10 de 37
CONDENSER BLOWER MOTOR CHARACTERISTICS
BRAND NAME - DAVICA
TYPE - FI-6305 FI-6305 FI-6305
COUNTRY OF ORIGIN - ARGENTINA
POWER DEMAND W 150 150 150
CURRENT Amp. 0.8 0,8 0.8
VOLTAGE Volt 220
EVAPORATOR COILS
SURFACE AREA Sq.m 0.21 0,21 0,21
NUMBER OF ROWS - 2 3 4
TUBE DIAMETER mm 9,52
FINS PER INCH - 12
CONDENSER COILS
SURFACE AREA Sq.m 0.41 0,41 0,41
NUMBER OF ROWS - 2 3 4
TUBE DIAMETER mm 9.52
FINS PER INCH - 13
SYSTEM FOR LOW OUTDOOR TEMPERATURE OPERATION
TYPE - ELECTRONIC
BRAND NAME - WESTRIC
MODEL - CVTR
COUNTRY OF ORIGIN - ARGENTINA
HIGH- AND LOW-PRESSURE SWITCHES
BRAND NAME - SAGINOMIYA /TEXAS
RANGE ALTA Kg/sq.cm 20-26
BAJA Kg/sq.cm 2.8-1.3
COUNTRY OF ORIGIN - JAPAN /USA
DEHYDRATING FILTER
BRAND NAME - WHITE/DANFOSS
TYPE - ECO 100 / DCL 083s
COUNTRY OF ORIGIN - ARGENTINA/MEXICO
WASHABLE AIR FILTER
BRAND NAME - T.S. D
NUMBER - 1
WIDTH mm 515
HEIGHT mm 740
THICKNESS mm 8
ADDITIONAL DATA
DRIP TRAY MATERIAL STEEL SHEET - BWG 18
HIGH PRES. CHARGE VALVES YES/NO YES
LOW PRES. CHARGE VALVES YES/NO YES

76-1007-06 Página 11 de 37
TECHNICAL CHARACTERISTICS AND DIMENSIONS OF THREE-PHASE TYPES: AM -500 - AM-600
- AM-700
DESCRIPTION UNITS AM-500 AM-600 AM-700
DIRECT EXPANSION UNIT - CHARACTERISTICS
TYPE - SELF CONTAINED
BRAND NAME - WESTRIC
MANUFACTURING STANDARD - ISO-9001
COUNTRY OF ORIGIN - ARGENTINA
CAPACITY Kw 5,4 7,09 8,1
POWER DEMAND Kw 2,5 3.2 4
FLOW RATE cu.m/min 22 22 26
WIDTH mm 880
HEIGHT m m 1460
DEPTH mm 450
WEIGHT OF COMPLETE UNIT Kg 140 150
COMPRESSOR CHARACTERISTICS
TYPE - HERMETICALLY SEALED
BRAND NAME - TECUMSEH COPELAND DANFOSS
TYPE - TFH5524E ZR-28K3E-TFD HRM-032 U4LP6
COUNTRY OF ORIGIN - FRANCE USA USA
NUMBER - 1 1 1
POWER DEMAND Kw 1,98 2,27 2,55
CURRENT Amp 3,8 3,9 5,13
CHARGE OF R22 GAS Kg 2,1 2.5 2,8
EVAPORATOR BLOWER CHARACTERISTICS
BRAND NAME - REVCOR
COUNTRY OF ORIGIN - USA
TYPE - CENTRIFUGAL
DIAMETER mm 160
WIDTH mm 215
NUMBER - 2
COUPLING - DIRECT
EVAPORATOR BLOWER BLOWER MOTOR CHARACTERISTICS
BRAND NAME - DAVICA
TYPE - FR-4301
COUNTRY OF ORIGIN - ARGENTINA
POWER DEMAND Kw 0.17
CURRENT Amp 0.91
VOLTAGE Volt 220
TRANSMISSION - DIRECT
BEARINGS - YES
CONDENSER BLOWER CHARACTERISTICS
TYPE - AXIAL
DIAMETER - 400 400 508
NUMBER - 1
FLOW RATE cu.m/min 38 38 55
COUPLING - DIRECT
CONDENSER BLOWER MOTOR CHARACTERISTICS
BRAND NAME - DAVICA
TYPE - FI-6305 FI-6305 FI-6700

76-1007-06 Página 12 de 37
COUNTRY OF ORIGIN - ARGENTINA
POWER DEMAND Kw 0.15 0.15 0.53
CURRENT Amp 0.8 0.8 1.8
VOLTAGE Volt 220
EVAPORATOR COILS
SURFACE AREA sq.m 0,21 0,28 0,28
NUMBER OF ROWS - 3 4 4
TUBE DIAMETER mm 9,52 9,52 9,52
FINS PER INCH 12 12 12
CONDENSER COILS
SURFACE AREA sq.m 0,41 0.44 0.44
NUMBER OF ROWS - 3 4 4
TUBE DIAMETER mm 9.52 9.52 9.52
FINS PER INCH - 13 13 13
SYSTEM FOR LOW OUTDOOR TEMPERATURE OPERATION
TYPE - ELECTRONIC
BRAND NAME - WESTRIC
MODEL - CVTR
COUNTRY OF ORIGIN - ARGENTINA
HIGH AND LOW PRESSURE SWITCHES
BRAND NAME - SAG INOM IYA
TYPE HIGH - ACB-2UB289W
LOW - ACB-2UA270W
RANGE HIGH Kg/sq.cm 20-26
LOW Kg/sq.cm 2.8-1.3
COUNTRY OF ORIGIN - JAPAN
DEHYDRATING FILTER
BRAND BAME - WHITE / DANFOSS
TYPE -
ECO 100 / DCL
083S
COUNTRY OF ORIGIN - ARGENTINA / MEXICO
AIR FILTER
BRAND NAME - TSD
TYPE - Lavable
NUMBER - 1
WIDTH mm 730
HEIGHT mm 331
THICKNESS mm 8
ADDITIONAL DATA
DRIP TRAY MATERIAL BWG N°18
HIGH PRES. CHARGE VALVE YES/NO YES
LOW PRES. CHARGE VALVE YES/NO YES

76-1007-06 Página 13 de 37
REVISION OF UNITS - INSTALLATION
Upon receiving the units, carefully inspect them to verify that they were not damaged during transportation and also
that there are not missing parts. If something is not right, please contact the Engineering Dept. at Multicontrol SA.
LOCATION OF UNITS IN THE ROOM
- The exact location for the AC units shall be chosen so that there are not obstacles to the circulation of air to and
from the unit, both on the outside and inside the shelter.
- When two units are being installed in the same shelter, a minimum distance of 500 mm between them shall be
kept for service and maintenance purposes.
- Check that the shelter or room walls can bear the weight of the units. If they can’t, a support rack shall be
provided.
INSTALLATION
Use the mask supplied together with the unit to mark its location on the wall; make sure that the unit is properly
levelled.
The mask includes the position of the holes on the support brackets of the units, the hole for cable inlet and the
openings corresponding to air inlet and air recycling.
In order to minimize errors when marking the position of holes and openings on the wall, the holes on the mask are
of a smaller diameter than actually necessary, therefore a drill of the same diameter shall be employed.
Before fixing the unit against the shelter wall, it is recommended to add silicone sealant to the support brackets and
all around the unit in order to prevent possible water leakage.
POWER SUPPLY CONNECTION
For electrical interconnection and power supply, proceed as follows:
- Connect 220VAC power supply to the terminal strip of the power board
- Connect the ground wire to the terminal strip of the power board.
- Connect the wires between the power board and the control board, according to the interconnection diagram.
IMPORTANT:
NOTE: If power supply is three-phase with neutral, such neutral wire shall be identified beyond any doubt, then
check the required 380V between phases and 220VAC between each of the phases and neutral.

76-1007-06 Página 14 de 37
Recommended cable size
Cable
nominal
cross
section
Maximum wire
diameter of
cable
NOMINAL
insulation
thickness
Approximate
OD
Approximate
mass per unit
length
Admissible
current in cable
ducts (1)
Admissible
current in open
air
(1)
sq.mm mm mm mm Kg/km Ampere Ampere
1.5 0.26 0.7 3.0 21 8 10
2.5 0.26 0.8 3.7 32 12 16
4 0.31 0.8 4.2 46 20 28
6 0.31 0.8 4.8 65 30 36
10 0.41 1.0 6.1 110 42 50
16 0.41 1.0 7.9 185 56 68
25 0.41 1.2 9.8 290 73 89
35 0.41 1.2 11.1 390 89 111
50 0.41 1.4 13.6 550 108 134
For the connection of the room thermostat do not use cable of less than 1 sq.mm cross section, or lengths of over
50m.
STANDARD COLORS FOR CABLES:
NAME COLOR
“R” Phase - Ll Brown
“S”Phase - L2 Black
“T” Phase - L3 Red
Neutral Light blue
Ground Yellow / Green
For safety reasons, the power board should be grounded through the corresponding ground terminal.
Safety Chain
The safety chain is composed of the high pressure switch, the low pressure switch, the missing phase relay (for
three-phase units only), the thermal relay of the compressor contactor, and the thermal relay of the heating
resistors (for cooling/heating units only).
Start up
Once the installation and electrical interconnection job is finished, the unit is ready for start up.
If start up is done in the winter season, the oil in the carter should not be cold, therefore the carter heater should be
connected a few hours in advance of start up.
Before energizing the air conditioner, manually check that both blowers (evaporator and condenser) are free to
turn, and that the air filter and the back upper lid are in place.

76-1007-06 Página 15 de 37
Cooling circuit AM-300-500-600-700 units

76-1007-06 Página 16 de 37
Electric circuit - AM-300 / AM-500 / AM-600 single phase units

76-1007-06 Página 17 de 37
Electric circuit – AM 300/500/600 single-phase units with restarting timer

76-1007-06 Página 18 de 37
Electric Circuit – AM-600 / AM-700 three-phase units

76-1007-06 Página 19 de 37
Electric circuit – AM 600 / AM 700 three-phase units with restart timer

76-1007-06 Página 20 de 37
Electric circuit – AM 500 Heating/cooling three-phase units