Movincool CM25 Service Manual User Manual

SERVICE MANUALCM 25Unit Serial Number Range: 1009XXXXC25 to Present(From October 2009 to Present)DocID: 00G00045EA

Operation Section102.3 Characteristics• Value range for each outdoor temperature shown in the graphs is based on the compressor speed.(1) How to read

Operation Section11(2) Cooling capacity curve< NOTE >Condenser inlet air temperatures are at 50% relative humidity.IILL00676-00Evaporator Inlet

Operation Section12(3) Power consumption curve< NOTE >Condenser inlet air temperatures are at 50% relative humidity.Evaporator Inlet Air Dry Bu

Operation Section13(4) Current consumption curve< NOTE >Condenser inlet air temperatures are at 50% relative humidity.Evaporator Inlet Air Wet B

Operation Section14(5) Cool air temperature difference curve< NOTE >Condenser inlet air temperatures are at 50% relative humidity.Evaporator Inl

Operation Section153. CONSTRUCTION3.1 Exterior ComponentsILL00665-00Cool Air Exhaust(12.0 in.Dia.Flange)Evaporator (Room)Air Intake(12.0 in.Dia.Flange

Operation Section163.2 Internal StructureI003141Evaporator FanEvaporator Fan MotorEvaporatorControl BoxCondenser FanCondenser Fan MotorCondenserAccumu

Operation Section173.3 Basic Construction• The MovinCool CM 25 is compact inconstruction due to the condenser andevaporator being enclosed in one unit

Operation Section184. REFRIGERATION SYSTEM4.1 Refrigeration System ConstructionThe component parts of the refrigeration system include the following:•

Operation Section19ILL00680-00MF2 (Evaporator Fan Motor)CondenserMF1(Condenser Fan Motor)EXV(Electronic Expansion Valve)CompressorHPRS(High-Pressure S

SERIAL NUMBER LOCATION AND IDENTIFICATIONNameplate Label PositionNameplate LabelCOOLING AMPS. WITH PUMPCOMPR. OUTPUTREFRIGERANT/TOTAL CHARGEDESIGN PRE

Operation Section204.2 Compressor• The CM 25 is equipped with a variable speed compressor, which is driven by state of the artinverter technology.• A

Operation Section21(3) Operation1) Start of compression1) The cylinder is filled with low pressure gas.2) Since pressure in the discharge chamber is h

Operation Section22(4) Compressor lubrication• The lubrication system is comprised of ahollow shaft, an oil scraper mounted at thebottom end of a shaf

Operation Section234.4 Electronic Expansion Valve• The electronic expansion valve causes rapidrefrigerant expansion by injecting "high-temperatur

Operation Section244.6 Accumulator• The accumulator is mounted on the suctiongas piping between the evaporator and thecompressor. The accumulator sepa

Operation Section255. ELECTRICAL SYSTEM5.1 Circuit DiagramILL00682-0012GGCN107CN106CN1052CN104CN103CN101CN102CN1F3F2WMC1CN3CN2CN4#3, #4 : N/AP CAC

Operation Section265.2 Control BoxI003190RB: Relay BoardTB2: Terminal Block 2TB1: Terminal Block 1NF: Noise FilterIND: Inductor Coil

Operation Section275.3 Power Supply Requirements• The unit requires a single-phase 208/230 V, 60 Hz power supply to operate.• The power supply should

Operation Section285.4 Wall Mounted Controller (WMC)• The WMC for this unit should be mounted within the room close to the return air grill to provide

Operation Section29< NOTE >The room temperature display range is from 16°F (-9°C) to 140°F (60°C). When the display value is greater than 99°F,

Table of ContentsOperation Section1. PRECAUTIONS FOR SAFETY1.1 Foreword. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation Section30• WMC connection< NOTE >If the wiring needs to be extended, a maximum extension wire can be extended up to 316 feet.Shield wi

Operation Section31For WMC supplied with the CM 25 serial number from 0113XXXXC25 to present• If the reading of the room temperature value is not accu

Operation Section325.5 Field-Supplied Millivolt Wall Thermostat (MWT) Connection• The CM 25 is equipped with terminals for connection to the MWT. The

Operation Section335.6 Warning Signal Connection (Output Signal Terminal L+ and L-)• The unit is equipped with a warning signal output relay type (For

Operation Section345.7 Fire Alarm Control Panel Connection (Input Signal Terminal E+ and E-)• The unit is equipped with a normal open input signal tha

Operation Section355.8 Basic Operation• The following components are controlled based on settings and signals from the WMC or MWTin accordance with si

Operation Section365.11 Evaporator Fan Motor Operation• The evaporator fan motor is controlled by signals from the WMC or MWT.(1) When the WMC is conn

Operation Section375.13 Internal Drain Pump Operation• The internal drain pump evacuates evaporatorcondensation accumulated in the drain pan.This pump

Operation Section385.17 Relay Board• The relay board controls components such as the compressor and fan motor based on bothsignals received from the W

Operation Section39(2) DIP switch configuration and setting• The controller of the unit is equipped with DIP switches that default in the OFF position

Table of Contents5.12 Condenser Fan Motor Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operation Section405.18 Compressor(1) Compressor motor• The CM 25 uses an inverter-controlled DCcompressor. The compressor motor isoperated by three-p

Operation Section415.19 Fan Motor(1) Evaporator fan motor• The CM 25 uses an inverter-controlled DCevaporator fan motor.• The evaporator fan motor is

Operation Section425.20 Temperature Thermistor• The temperature thermistor detectstemperature as a resistance value.5.21 Float Switch• A normally clos

Repair Section436. TROUBLESHOOTINGWARNING• Disconnect power supply from the unit before performing any service. Beware that someresidual voltages may

Repair Section446.2 Self-Diagnostic Codes• Self-diagnostic codes are displayed on the WMC and indicate by LED on the relay board underthe following co

Repair Section45E09 E09Evaporator fan motor locked4ONWhen a fan motor speed of50 rpm or less is detectedfour times within 10 secondsafter the fan mo

Repair Section46: LED turn on< NOTE >*1 Shown with the operational status display mode.When the fan is under the initial settings or in test mo

Repair Section47Alarm (buzzer) patternsI003173Pattern 1Pattern 2Pattern 3Pattern 4ONOFFONOFFONOFFONOFF0.5 sec4 sec1 sec

Repair Section48Alarm clear method• Self-diagnostic codes are not displayed for the MWT. To identify the cause, check the LED onthe relay board and re

Repair Section49< NOTE >*1 Shown with the operational status display mode.When the fan is under the initial settings or in test mode, either the

Table of ContentsRepair Section6. TROUBLESHOOTING6.1 Troubleshooting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Repair Section506.3 Troubleshooting Chart• To accurately troubleshoot the problem, it is important to carefully confirm the nature of theproblem.• If

Repair Section51Condition Check AreaPossible Cause RemedyUnit does not operate.Self-Diagnostic Codes(WMC)Buzzer PatternUser ModeService ModeLCD displa

Repair Section52LCD displays self-diagnostic codes.HP HP 4 Operating outside of the operating temperature range.Check environmental condition. Do not

Repair Section53LCD displays self-diagnostic codes.E05 E05 2 Loose CTS2 thermistor connection.Reconnect the CTS2 thermistor and check the connection.R

Repair Section54LCD displays self-diagnostic codes.E12 E14 4 Excessive current from the STI module to the compressor.RESET the controller*1 twice or t

Repair Section55ConditionCheck Area Possible Cause RemedyInsufficient CoolingUnit operates.LCD displays normally.Air is not cool.Compressor start dela

Repair Section566.4 Self-Diagnostic Code Display Operation and Control(1) WMC• When an abnormality occurs in a unit, a self-diagnostic code and “CHECK

Repair Section576.5 Self-Diagnostic Code Records Display Operation(Only When Connected With WMC)• The unit power on time, compressor operation time, a

Repair Section58(2) Exiting the self-diagnostic code records display• To exit the self-diagnostic code records display, press the "RESET" bu

Repair Section596.6 Operational Status Display Control(Only When Connected With WMC) • The operational status of each functional part can be displayed

Operation Section61. PRECAUTIONS FOR SAFETY1.1 Foreword• This manual has been published to service the MovinCool CM 25. Use this manual only whenservi

Repair Section60< NOTE >*1 Displayed in accordance with the WMC temperature unit setting.Displayed CodeDisplay ItemDisplay UnitsDisplay Example0

Repair Section616.7 Initialize Fan Motor• Initialize the motor to correct the motor speed when any of the following components arereplaced: evaporator

Repair Section62I003178ONOFF1212 12341234DSW1 DSW2 DSW3 DSW4Initialize Fan Motor TEST Mode

Repair Section636.8 TEST Mode• Test operation can be performed using the test mode.(1) Operation method• Set the CM 25 to standby mode, turn DIP switc

Repair Section646.9 Basic Inspection• Perform the following inspection before disassembly.(1) Inspection of plate fins• To inspect the plate fins of e

Repair Section656.10 Inspection of Compressor(1) Compressor motor• Measure resistance across the terminals of thecompressor motor. (All terminals must

Repair Section666.11 Inspection of Electronic Expansion Valve Control Coil• Measure resistance across the connector pinsof the electronic expansion va

Repair Section676.14 Inspection of Refrigeration System• In most cases, the probable cause for insufficient cooling is a clog in the system, leakage o

Repair Section687. DISASSEMBLYWARNING• Disconnect power supply from the unit before performing any service. Beware that someresidual voltage may remai

Repair Section697.2 Disassembly1) Loosen the bottom screw.2) Take out the nine (9) screws, and then removethe service panel.3) Disconnect the two (2)

Operation Section72. SPECIFICATIONS2.1 Exterior Dimension DiagramILL00663-00531629.8DIA. 0.631.54DIA. 12DIA. 1217.8 0.80.951.32.410.214.46.5209.53.40.

Repair Section705) Take out the thirteen (13) screws, and thenremove the front right panel.6) Take out the eleven (11) screws, and thenremove the fron

Repair Section717.3 Removal of Evaporator Fan Assembly< NOTE >Initialization is required after replacing the evaporator fan motor. (See page 61)

Repair Section723) Take out the six (6) screws, and then remove thering. Loosen the set screw with an Allen wrenchand remove the fan.4) When assemblin

Repair Section737.4 Removal of Condenser Fan Assembly< NOTE >Initialization is required after replacing the condenser fan motor. (See page 61)1)

Repair Section743) Take out the six (6) screws, and then remove thering. Loosen the set screw with an Allen wrenchand remove the fan.4) When assemblin

Repair Section757.5 Removal of Electrical ComponentsI003202Stop SwitchBoxInductor CoilStayTerminal Block 1Noise FilterGround BoltRelay Board andBracke

Repair Section76(1) Relay boardWARNING• Do not touch the relay board until the green LED7 is turned off. Failure to follow thiswarning may lead to ele

Repair Section77Replacement of Relay Board1) Attach the relay board with the six (6) screws. Always tighten the ground line for the relay boardtogethe

Repair Section788. REFRIGERATION SYSTEM REPAIRWARNING• Disconnect power supply from the unit before performing any service. Beware that someresidual

Repair Section79(3) Cleaning brazing filler metal and pipe• When the refrigeration system has been opened up, exposure to heat may have caused brazing

Operation Section82.2 Technical SpecificationsElectronic FeaturesOperationWall Mounted Controller (WMC) with LCD displayControl Electronic with Invert

Repair Section808.2 Removal of Refrigeration System ComponentsWARNING• Before replacing any refrigeration cycle component, recover the refrigerant usi

Repair Section818.3 Charging the System with R-410A Refrigerant• Always ensure that the refrigeration system has been properly evacuated before chargi

Repair Section82(1) Connection of gauge manifold1) Properly remove the crushed end of the pinch-offtube at the high-pressure side and the lowpressure

Repair Section83(3) Checking vacuum1) Leave the high-pressure valve and the low-pressure valve of the gauge manifold closed for 5minutes or more, and

Repair Section84(4) Checking for gas leaks1) Remove the charging hose (green) from thevacuum pump, and connect the hose to therefrigerant cylinder (R-

Repair Section85(5) Evacuation (repeat)1) Close the valve of the refrigerant cylinder. Thenremove the charging hose (green) from therefrigerant cylind

Repair Section868.4 Refrigerant Charging Work(1) Refrigerant charging1) Remove the charging hose (green) from thevacuum pump, and connect it to the re

Repair Section87(2) Removal of gauge manifold1) Crimp the pinch-off tube with a pinch-off tool.2) Remove the gauge manifold and the processtube fittin

Repair Section889. REASSEMBLY9.1 Reassembly of Unit• Reassemble the unit in the reverse order of removal. Described below are the parts that require s

Second Issue: January 2013P/N: SV0075-01

Operation Section9• Specifications are subject to change without notice.< NOTE >*1 :With two 20-foot (6.1 m) ducts containing one 90° bend each,