Marine Air Conditioners Service Manual

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GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

Marine Air Conditioners

Service Manual

1

GREE ELECTRIC APPLIANCES INC. OF ZHUHAI

GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

CONTENTS

PRODUCT.......................................................................................................................................2

1. MODELS LIST ................................................................................................................2

2. NOMENCLATURE .........................................................................................................2

3. FUNCTION ......................................................................................................................3

4. PRODUCT DATA............................................................................................................3

4.1. Product Data at Rated Condition .....................................................................3

4.2. Operation Range ................................................................................................5

4.3. Electrical Data .....................................................................................................5

5. PIPING DIAGRAM .........................................................................................................5

Heat Pump.......................................................................................................................6

CONTROL .......................................................................................................................................8

1. OPERATION FLOWCHART .........................................................................................8

1.1. Cooling/Dry Operation .......................................................................................8

1.2. Heating Operation ..............................................................................................9

2. MAIN LOGIC ...................................................................................................................9

2.1. Cooling/Dry Mode...............................................................................................9

2.2. Heating Mode(Defrosting/ Auxiliary Electric Heater)..............................12

2.3. Fan Mode...........................................................................................................14

3. REMOTE CONTROLLER ...........................................................................................14

3.1. Wireless Remote Controller ............................................................................14

3.2. Wired Remote Controller.................................................................................17

3.3. Display Fahrenheit or Centigrade ..................................................................19

3.4. Key Lock ............................................................................................................20

3.5. Starting Interval Setting....................................................................................20

3.6. Auto –off function of the manual controller ...................................................20

3.7. Dimension..........................................................................................................21

3.8. Installation..........................................................................................................21

INSTALLATION.............................................................................................................................23

1. Dimension Data ............................................................................................................23

2. Installation Clearance Data.........................................................................................23

3. Unit Installation .............................................................................................................24

4. Water System Installation............................................................................................25

5. ELECTRIC WIRING WORK........................................................................................27

5.1. Electric Wiring Design......................................................................................27

5.2. Specification of Power Supply Wire and Air Switch.....................................27

MAINTENANCE............................................................................................................................30

1. TROUBLE TABLE ........................................................................................................30

2. FLOW CHART OF TROUBLESHOOTING...............................................................32

2.1. High Pressure Protection ................................................................................32

2.2. Low Pressure Protection .................................................................................33

2.3. Temp Sensor Error ...........................................................................................34

2

GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

3. WIRING DIAGRAM ......................................................................................................34

4. DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS ...................36

4.1. Compressor .......................................................................................................36

4.2. The 4-way valve................................................................................................38

4.3. Tube in Tube Heat Exchanger ........................................................................40

4.4. Fan and Fan Motor...........................................................................................41

5. EXPLODED VIEWS AND PART LIST.......................................................................41

3

GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

PRODUCT

1

MARINE AIR CONDITIONERS PRODUCT

PRODUCT

1. MODELS LIST

Capacity

Model

Cooling

(Btu/h)

Heating

(Btu/h)

CYR7/Na-K 7200 7500

Ref.

Power

Supply

Appearance

CYR9/Na-K 8900 9500

R410A

CYR12/Na-K 11900 13000

220-240V

1Ph

50Hz

CYR16/Na-K 15700 16200

Note:1Ton =12000Btu/h = 3.517kW

2. NOMENCLATURE

C Y S R □ / □ - □

5 6

NO. Description Options

CY marine air conditioner

2 The Type of the Unit

Cold/Hot Air Default;Cold/Hot

Water S

Heat Pump R;Heat Pump with

4

5

Nominal Cooling Capacity

Cooling-only Default

7=7000Btu/h

9=9000 Btu/h

12=12000 Btu/h

16=16000 Btu/h

The Type Of Refrigerant

None:R22

Na:R410A

D:1Ph,208/230V,60HZ

K:1Ph,220/240V,50HZ

Supply

M:3Ph,380/415V,50HZ

F:3Ph,208/230V,60HZ

2

MARINE AIR CONDITIONERS PRODUCT

3. FUNCTION

Function Description

Applied Sites

Compact design

It is applied for all kinds of ships.

It can be installed in incapacious place, like the space under the closet and seats of the ship, which affects the outlook of the ship and is coordinate with the ambience.

Rust prevention and rot-proof Corrosion-resistant material and the special technics- spray coating on the complete unit are adopted, which enable the unit to be durable.

Unique Structure Design

Two Exhaust Outlets

The angle of supplying air of indoor fan can be 0

° .90 ° .180 ° .270 ° ,which is convenient for connecting duct.

The condensate can be drained in time no matter how ship shakes.

4. PRODUCT DATA

4.1. Product Data at Rated Condition

Models CYR7/Na-K CYR9/Na-K

Cooling

Nominal Capacity

Running Current

Power Input

W 2100

Btu/h 7200

A

W

2.6

580

2600

8900

3.5

760

Heating

Nominal Capacity

Running Current

Power Input

Power Supply

Compressor Type

Refrigerant

W 2200

Btu/h 7500

A

W

Type

Control

3.1

680

220-240V~50Hz

Rotary

2800

9500

3.9

850

R410a

Capillary

Condenser

Evaporator

Charge kg 0.39

Type

0.40

Cupronickel Stacked tube

Diameter Cupronickel mm Φ 16

Type

Fan Type

Air Flow(H/M/L)

Tuyere Diameter

Sound Pressure Level

Unit Dimensions

CFM mm dB(A) mm

Aluminum fin-copper tube

Φ 100

Centrifugal fan

206/176/148

413×380×330/

58

279/235/206

Φ 100

413×380×330/

3

MARINE AIR CONDITIONERS PRODUCT

(Outline/Package) (H×W×D)

Weight(Net/Gross)

545×500×370 kg 26.5/31.5

545×500×370

29/32.5

Cooling

Models

Nominal Capacity

Running Current

Power Input

CYR12/Na-K

W 3500

Btu/h 11900

A 4.6

W 950

W 3800

CYR16/Na-K

4600

15700

5.8

1200

4750

Heating

Nominal Capacity

Running Current

Power Input

Power Supply

Btu/h 13000

A 5

W

1100

220-240V~50Hz

16200

6.7

1400

Compressor Type

Type

Refrigerant Control

Rotary

R410a

Capillary

Charge kg 0.51 0.60

Condenser

Evaporator

Type

Diameter Cupronickel

Type

Fan Type

Air Flow(H/M/L)

Tuyere Diameter mm

CFM mm

Cupronickel Stacked tube

Φ 16

Aluminum fin-copper tube

Centrifugal fan

325/282/235 395/353/323

Φ 125

Sound Pressure Level

Unit Dimensions

(Outline/Package) (H×W×D) dB(A) 58 mm

468×380×330/

554×545×376 kg 32.5/38

494×450×355/

622×590×400

38/43.5 Weight(Net/Gross)

Note:Fluctuation of the current and voltage can’t be beyond ±10%

1) Test Condition of Nominal Cooling Capacity: Indoor side-dry/wet bulb temp: 27/19.5℃;

Water-in temp: Temp difference is 5℃ and static pressure is 0Pa;

2) Test Condition of Nominal Heating Capacity: Indoor side-dry/wet bulb temp: 20/15℃;

Water-in temp: 15℃; Flow is as the test of nominal cooling capacity and static pressure is

0Pa;

3) Noise Measurement shall comply with JB/T4330-1999.

4) Input power excludes that of user’s water pump.

5) Specification will change with the revision of the product. Parameter on nameplate of the unit is the standard.

4

MARINE AIR CONDITIONERS PRODUCT

Model Leaving Water

(℃ /℉)

Water side

Temperature Difference

of Water(℃/℉)

Cooling 25

Heating 15

5

-

Air side

Air on Condenser

(℃ /℉)

10~40

4~25

Model

Power

Supply

Compressor

Qty. RLA LRA

Supply

Blower

Motor ol

Sy mb

Sy mb ol

Na me

V,Ph,Hz

CYR7/Na-K

CYR9/Na-K

CYR12/Na-K

CYR16/Na-K

220-240V 1Ph~50Hz

Notes:

RLA:Rated load amperes

LRA:Locked rotor amperes

5. PIPING DIAGRAM

Na me compresso r

4-way valve

Stop

Valve

— Each Each Each

1

3.05 12.4 0.64

4.05 19.6 0.86

5.55 25.0 0.59

6.8 32 0.85

Check

Valve

Capillary Filter

Electronic

Expansio n

Valve

Temperatu re

Sensor

Pressure

Switch

Heat

Exchanger with Axial

Flow Fan

Heat

Exchange with Cross

Flow

Blower

Heat

Exchanger with

Centrifugal

Fan

Thermal

Expansio n Valve

Vapour

Liquid

Separator

5

MARINE AIR CONDITIONERS PRODUCT

Heat Pump

The direction of Cooling

The direction of Heating

Check

Valve

Capillary

Assistant capillary seawater inlet seawater outlet

6

GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

CONTROL

7

MARINE AIR CONDITIONERS CONTROL

CONTROL

1. OPERATION FLOWCHART

8

MARINE AIR CONDITIONERS CONTROL

2. MAIN LOGIC

( 1)Cooling ON

Condition: Compressor ON: T amb

≥ T set

+ 1℃ and no error at the same time. When cooling is entered (they are just conditions for compressor ON, if they can’t be met, only indoor fan is running when startup of the unit while water pump and compressor are not running.

Description

9

MARINE AIR CONDITIONERS CONTROL

1) Water pump starts up after the cooling command is sent.

2) After indoor fan has been running at high speed for 5s, it turns to low speed.

3) Compressor is ON after water pump has started up for 5s

4) 4-way valve closes.

Sequence Chart

Indoor Fan

Compressor

Water Pump

4-way Valve

Send Command

( 2)Betweenness of Cooling

Condition: T set

- 1℃<T amb

< T set

+ 1℃

Description

1) Indoor fan keeps the original status.

2) Water pump keeps the original status.

3) Compressor keeps the original status.

5)Other loads don’t need to work,

( 3)Cooling OFF

Condition:

T amb

≤ T set

- 1℃ and no error at the same time ( if there is error, handle it according to troubleshooting sequence).

Description

1) Indoor fan is running at setting speed.

2) Compressor stops

3) Water pump stops after the compressor has stopped for 5s.

10

MARINE AIR CONDITIONERS CONTROL

Sequence Chart

Indoor Fan

Compressor

Water Pump

4-way Valve

Send Command

( 4)Cooling OFF

Description

1) After the command is sent, the compressor stops.

2) Indoor unit and indoor fan stop at the same time.

3) 5s later water pump stops.

Sequence Chart

Indoor Fan

Compressor

Water Pump

4-way Valve

Send Command

11

MARINE AIR CONDITIONERS CONTROL

( 1)Heating ON

Condition:

Compressor ON: if T amb

≤ T set

- 1℃ and there is no error at the same time, the heating will be entered.

Description

1) The indoor unit starts up when the command has been sent.

2) Water pump starts up at the same time.

3) Compressor starts up when the water pump has started up for 5s.

4) When compressor firstly starts up for 15s, 4-way valve is energized.

Sequence Chart

Indoor Fan

Compressor

Water Pump

4-way Valve

Send command

(2)Betweenness of Heating

Condition:

T set

- 1℃<T amb

< T set

+ 1℃ and no error at the same time(( if there is error, handle it according to troubleshooting sequence).

Description

1) Indoor fan keeps original status.

2) Water pump keeps original status.

3) Compressor keeps original status.

4) 4-way valve keeps original status.

( 3)Heating OFF

Condition

T amb

≥ T set

+ 1℃ and and no error at the same time(( if there is error, handle it according to troubleshooting sequence).

12

MARINE AIR CONDITIONERS CONTROL

Description

1) Indoor fan is running at setting speed.

2) Compressor stops.

3) 5s later, water pump stops.

4) 4-way valve keeps being energized.

Sequence Chart

Indoor Fan

Compressor

Water Pump

4-way Valve

Send command

( 4)Heating OFF

Description

1) Compressor stops after command is sent.

2) 5s later, water pump stops.

3) 30s later after the stop of compressor, indoor fan stops.

4) 4-way valve is deenergized after the compressor has stopped for 2min.

Sequence Chart

13

MARINE AIR CONDITIONERS CONTROL

Indoor Fan

Compressor

Water Pump

4-way Valve

Send command

Indoor fan is running at setting speed and there are three options for the speed.

→ HIGH →MID → LOW → AUTO →

Auto Air Speed a) Heating

During this course, there must be 30s delay at least. b) Cooling

If Tset<Tamb<Tset+3℃ it is automatically set to be mediate speed.

3. REMOTE CONTROLLER

3.1. Wireless Remote Controller

3.1.1 Operation View

14

MARINE AIR CONDITIONERS CONTROL o

F

OPER

MODE ON/OFF

NO. Name

1 SWING button There is no swing function in this A/C unit.

TEMP. increase 1° by pressing

+

button once, and decreases 1° by pressing

- button once.

COOL MODE SET Temp. 61° F-86° F or 16° C-30° C

HEAT MODE SET Temp. 61° F-86° F or 16° C-30° C

DEHUMIDFY MODE 61° F-86° F or 16° C-30° C

Press this button to change the operation mode in order of

3 MODE

4 ON/OFF button

5 LCD

6 FAN button

Note: the cooling only without mode.

Press this button to turn on or turn off the unit.

It shows all the setting contents.

Note: Cover remove will not change the display contents.

Press this button to change the fan speed:

15

MARINE AIR CONDITIONERS CONTROL

3.1.2 Display View

16

MARINE AIR CONDITIONERS CONTROL o

F

OPER

NO. Display

1 Fan speed display HIGH-MID-LOW and AUTO speed

2

3

: Run automatically; : Cooling;

Display of mode operation

: Only fan run; : Heating

Cooling only type without heat mode

Digital display Display of set temperature

/

3.2. Wired Remote Controller

3.2.1 Operation View

: Dry;

17

MARINE AIR CONDITIONERS CONTROL

NO. Name

18

MARINE AIR CONDITIONERS CONTROL

1

2

3

Remote receiver

Receive the signal from the mainboard

Digital display

Display of set temperature

Fan speed display Display of HIGH-MID-LOW or AUTO speed

In “COOL” mode, the LED marked will be light if the set temperature is lower than room temperature. If set temperature is higher than room temperature, only the fan will run.

4

5

6

7

8

In “DEHUMIDIFY” mode, the LED marked will be light and fan will work at low speed within a certain temperature range. Dehumidifying is more efficient than in cooling mode and it will save energy.

Display of mode operation

(COOL-DEHUMIDI

FY-HEAT and

AUTO)

Mode button

In “HEAT” mode, the LED marked will be light when the set temperature is higher than the room temperature. When the setting temperature is lower than the room temperature, it will not run.

In “FAN” mode, the room temperature will be displayed and the temperature cannot be set.

In “AUTO” mode, the LED marked AUTO will be light and the room temperature will be displayed. The temperature cannot be set, as the system will run automatically in the appropriate mode according to the contrast between room temperature and set temperature.

Press this key to change the operation mode in order of

→ COOL → DEHUMIDIFY → FAN → HEAT → AUTO →

Fan control button

Press the FAN button, the fan speed will change in the following order:

→ HIGH →MID → LOW → AUTO →

In “DEHUMIDIFY” mode, the fan will work at low speed automatically.

Temp. Setting button (Increasing)

To increase in 1 o increments

Temp. Setting button

(Decreasing)

To decrease in 1 o increments

Press ON/OFF button to turn the unit on

9

ON/OFF button

Pressing the ON/OFF button a second time will turn the unit off

3.3. Display Fahrenheit or Centigrade

Pressing the ▲ and ▼ key simultaneously, will switch between Fahrenheit and Centigrade modes.

19

MARINE AIR CONDITIONERS CONTROL z Press again, to unlock the keys. z When keys are locked, the controller is locked out of system operation. “EE” will be displayed.

3.5. Starting Interval Setting z If there are several A/C units in a yacht, you can set starting time interval between one by one. z When the manual controller power on, and there isn’t any operation, to press z ▲ button and fan speed button simultaneously, the starting interval can be set, the nixie tube will flash a number in every 0.5s, then pressing ▼ and ▲ buttons to set up, after the setting, to press the ▲ button and fan speed button simultaneously, to confirm the set up value; if not to press▲ button and fan button again simultaneously, the figure will flash 10s,and then the controller will quit from starting interval setting, the setting number is not available. z The value be displayed by nixie tube is the figure of interval time, each interval time is 20s, for example the set up value is 128, it means that the actual setting interval time should be

128×20=2560s. z When the value be displayed by flashing nixie tube, then to shield each signal of wireless remote controller, excepting to press the ▲ button and fan speed button at the same time, and to shield other buttons. z After manual controller powered on, if there is wireless remote controller or at the same time to press other buttons except the ▲ button and fan speed button simultaneously, and then press the ▲ button and fan speed button simultaneously, it will display the figure of interval time for 5s.

During the period, if there is wireless remote controller or other remote controller signal, it will directly quit the display interface of starting interval time. z The new setting starting interval time would be executed after manual controller re-powered on. z The setting range of starting interval value is 0-255; accordingly, the setting range of starting interval time is 0-5100s(85min). z If there is malfunction happened, cannot set up or display the time of starting interval.

3.6. Auto –off function of the manual controller

The display of ambient temperature will automatically blank in 5-minute lag if there is no operation on the manual controller.

( 1)After receiving the signal from the manual controller, the indicator will light on automatically, in which case, the unit will not operation at all and the manual controller can be active after it lights on.

( 2) After receiving the signal from remote controller, the display of temperature on the manual controller will light on; meanwhile, the unit carries out corresponding operation. z After the unit stops, there is no display on the manual controller. z Powered on again if the unit status is on before power off, temperature indicator and mode indicator of the manual controller will light on automatically. z If the unit receives the stop signal, it will directly blank off the temperature indicator and mode indicator of the manual controller.

20

MARINE AIR CONDITIONERS CONTROL

3.7. Dimension

H

M

L

AUTO AUTO

FAN MODE

3.8. Installation

Before mounting the manual controller, consider the location. The manual controller should be mounted on an inside wall, slightly higher than mid-height of the cabin. The cut out size for the manual controller is

2 1/2” (64mm) wide by 3 5/16” (84mm). Do not mount the manual controller in direct sunlight, near any heat producing appliances or in a bulkhead where temperatures radiating from behind the panel may affect performance. Do not mount the manual controller in the supply air stream. Do not mount the manual controller above or below a supply or return air grille. Do not mount the manual controller behind a door, in a corner, under a stairwell or any place where there is no freely circulating air. Mount the manual controller within display cable length (custom lengths available) of the air conditioner. Plug the display cable into the circuit board in the electric box and into the back of the manual controller.

21

GREE COMMERCIAL AIR CONDITION MARINE AIR CONDITIONERS

INSTALLATION

22

MARINE AIR CONDITIONERS INSTALLATION

INSTALLATION

1. Dimension Data

Model H A B C D

CYR7/Na-K 331 386 383 120 16

CYR9/Na-K 331 395 383 120 16

CYR12/Na-K 331 441

CYR16/Na-K 358 475

2. Installation Clearance Data

wall

383

455

150

150

16

16 wall wall wall

23

MARINE AIR CONDITIONERS INSTALLATION wall

Note: Air outlets on bottom and both sides shall be away from the ceiling for 40mm at least; Air outlet shall be away from the ceiling for 100mm at least.

Drain Piping Work

The condensate drain pan is 2” (50mm) high with two drain locations. During conditions of high humidity, condensate may be produced at a rate of approximately 1/2 gallon per hour (1.9 liters per hour). Please pay more attention, it is important to route condensate drains downward to a sump pump. It is not recommended to route condensate drains to the bilge. After the condensate drain installation is complete, test the installation by pouring water into the pan and checking for good flow.

For installation of the condensate drain:

● Attach a 5/8” I.D. reinforced hose to the hose barb and secure with stainless steel hose clamps.

● Install the condensate drain hose downhill from the unit and aft to a sump.

● Two drain fittings may be used and the hoses (teed) together using a tee fitting provided there is a minimum 2" drop from the bottom of the base pan to the tee connection.

Do not terminate condensate drain line within three 3’ (914mm) of any outlet of engine, generator exhaust systems, compartment housing an engine or generator, nor in a bilge, unless the drain is connected properly to a sealed condensate or shower sump pump.

Seal all condensate hose penetrations.

3. Unit Installation

Selecting a good location for your air conditioner is the most important part of your preparation.

Be sure to consider the size of the area you are cooling, the air distribution needs, and the size of the unit you have chosen. Keeping in mind that cool air has a tendency to fall; it is highly recommended that you locate the supply air grille as high as possible in the cabin. See diagram below.

24

MARINE AIR CONDITIONERS INSTALLATION

The unit should be installed as low as possible, BUT NEVER IN THE BILGE OR ENGINE

ROOM AREAS, ENSURE THAT THE SELECTED LOCATION IS SEALED FROM DIRECT

ACCESS TO BILGE AND/OR ENGINE ROOM VAPORS.

Installing the unit as low as possible

(such as under a V-berth, dinette seat or bottom of a locker) and ducting the supply air as high as possible, creates an ideal airflow condition. This type of installation will prevent short or premature cycling.

The unit should be positioned on a firm, level, horizontal surface and the condensate drain line should run downward from the unit to a suitable drain location. Plan all Connections, which must be made including ducting, condensate drain, and seawater in and out, electrical power connections, location of control, and seawater pump placement, to assure easy access for routing and servicing.

4. Water System Installation

Several guidelines should be followed during the installation of the seawater system. Since the circulation pump is centrifugal and not self-priming, it must be mounted so that it is always at least 1’ (305mm) below the water line regardless of which tack the vessel is on. Pump may be mounted horizontally or vertically, however, the discharge must always be above the inlet.

Pump head should be rotated toward the direction of water flow. Install the seawater speed scoop intake as far below the water line and as close to the keel as possible in any application,

25

MARINE AIR CONDITIONERS INSTALLATION but especially on a sailboat, to keep the intake in the water when the boat heels over so that air does not get into the system. The speed scoop intake must face forward and not be shared with any other pump. A seawater strainer is mandatory between the shut off valve (seacock) and the pump to protect the pump from any foreign matter. Failure to install a seawater strainer will void the pump warranty. The seawater system should be installed with an upward incline from the speed scoop & seacock, through the strainer, to the inlet of the pump, next to the inlet of the a/c unit's condenser coil. The discharge from the a/c unit should run to the seawater outlet thru-hull fitting that should be located where it can be visually inspected for water flow as close to the waterline to reduce noise. All hose connections shall be secured using double/reversed stainless steel hose clamps. Use Teflon tape on all threaded connections.

Summary of the seawater system installation:

1. Install the speed scoop thru-hull inlet as close to the keel and as far below the water line as possible, facing forward. Bed the scoop with a marine sealant designed for underwater use.

2. Install a bronze, full flow seacock on the speed scoop thru-hull inlet.

3. Install a seawater strainer below the level of the pump with access to filter.

4. Mount the pump above the strainer and at least 1’ (305mm) below the waterline.

5. Connect the seacock and strainer with an uphill run of 5/8" reinforced marine grade hose.

6. Connect the discharge from the pump uphill to the bottom inlet of the a/c unit's condenser coil with 5/8" hose. Connect the discharge from the condenser coil to the overboard discharge thru-hull fitting with 5/8" hose.

7. Avoid loops, high spots or the use of 90° elbows with seawater hose (each 90° elbow is equivalent to 2.5' (762mm) of hose and a 90° elbow on the pump outlet is equivalent to 20' (6.1m) of hose).

8. Double clamp all hose connections with stainless steel clamps, reversing the clamps.

9. Use Teflon tape on all threaded connections.

10. Connect all metallic parts in contact with seawater to the vessel's bonding system including the speed scoop inlet, strainer, pump and the air conditioner. Failure to do so will void warranty.

26

MARINE AIR CONDITIONERS INSTALLATION

5. ELECTRIC WIRING WORK

5.1. Electric Wiring Design

Power

Mainboard

Connect water circulating pump

Connect wired controller

Model

Power Supply Capability of Minimum Minimum Sectional

27

MARINE AIR CONDITIONERS INSTALLATION

V Ph Hz

Air Switch

(A)

Sectional Area of Area of Power

Earth Wire Supply Wire

(mm

2

) (mm

2

)

CYR16/Na-K 10 1.5 1.5

28

MARINE AIR CONDITIONERS MAINTENANCE

MAINTENANCE

29

MARINE AIR CONDITIONERS MAINTENANCE

MAINTENANCE

1. TROUBLE TABLE

Trouble Code

E1

E2

E3

E6

F0

Trouble Name Origin of Trouble Signal Control Description

High Pressure

Protection of

Compressor

Indoor Ambient Temp

Sensor Error

High Pressure Switch

Temp Sensor

When high pressure is detected for continuous 3s, turn off the system( 4 way-valve is excluded when heating), and

“E1” will be displayed. It cannot be recovered. “E1” is cleared by pressing button “ON/OFF”. Press ON/OFF again to resume running.

Indoor Antifreezing

Protection

Low Pressure

Protection of

Compressor

Communication Error

Protection

Temp Sensor

Under Cool or Dry mode, after the compressor has been running for continuous 15min, if Teva <-2℃ is detected for continuous 3min, compressor will stop, fan will keep original status, nixie display indicator will display “E2”. When Teva ≥10

℃ for continuous 1s, it will recover and system will work normally.

After 4min startup of compressor, detection for low pressure is executed. When detect that the low pressure switch breaks for 30s,

Switch the system is turned off (4-way valve is

Low Pressure excluded when heating and indoor fan stops after the compressor has stopped for 30s.),

E3 is displayed and buzzer is warning. It can’t recover automatically. Press ON/OFF to clear the warning of voice.

When communication error has been detected for 1min, system is turned off

94-way valve is excluded when heating and indoor fan stops after the compressor has stopped for 30s.)and E6 is displayed. After the communication turns to normal, system resumes running and error code is cleared.

When detect that AD value is greater than

250 (short circuit) or less than 5 (open circuit) for continuous 5s, it is believed that the temp sensor is error. If detect that the

30

MARINE AIR CONDITIONERS MAINTENANCE

F1

Evaporator Temp

Sensor Error

Temp Sensor

AD value is between 5 and 250 for continuous 5s, it is believed that the temp sensor recovers.

When there is error of temp senor, system is turned off (4-way valve is excluded when heating and indoor fan stops after the compressor has stopped for 30s) and F0 is displayed. It can resume running when the error is cleared. Under air supply mode, only error code is displayed and the fan works normally. The error code will disappear when the error is cleared.

When detect that AD value is greater than

250 (short circuit) or less than 5 (open circuit) for continuous 5s, it is believed that the temp sensor is error. If detect that the

AD value is between 5 and 250 for continuous 5s, it is believed that the temp sensor recovers

When there is error of temp sensor, the system is turned off (4-way valve is excluded when heating and indoor fan stops after the compressor has stopped for 30s.) and F1 is displayed. After the error is cleared, it resumes running. Under air supply mode, only error code is displayed and fan works normally. When error is cleared, error code will disappear.

31

MARINE AIR CONDITIONERS MAINTENANCE

2. FLOW CHART OF TROUBLESHOOTING

2.1. High Pressure Protection

High Pressure

Protection

Check if the pressure is high by manometer

Yes

No

Check if the mainboard is normal

Check if the setting for running mode of the unit is proper

Yes

Check if the fan works normally

No

Adjust the setting mode

No

Check fan motor and the signal input

No

Replace mainboard

Yes

Check if the components for throttling are blocked

No

Replace the components

32

MARINE AIR CONDITIONERS MAINTENANCE

2.2. Low Pressure Protection

33

MARINE AIR CONDITIONERS MAINTENANCE

2.3. Temp Sensor Error

Temp Sensor

Error

Check if the plug of temp sensor is correctly connected with socket on mainboard

Yes

Remove the temp sensor and check if the resistance is normal

No

No

Confirm the direction of the plug and the socket

Replace temp sensor

Yes

Replace mainboard of the unit

3. WIRING DIAGRAM

WIRIN GDIAGRAM CYR7/Na-K.CYR9/Na-K

34

MARINE AIR CONDITIONERS MAINTENANCE

WIRIN GDIAGRAM CYR12/Na-K.CYR16/Na-K

35

MARINE AIR CONDITIONERS MAINTENANCE

4. DISASSEMBLY AND ASSEMBLY PROCEDURE OF MAIN PARTS

4.1. Compressor

Disassembly and Assembly of Compressor

Remark : Make sure that there isn’t any refrigerant in pipe system and the power supply is cut off before removal of the compressor.

Pictorial View Process

1 . Disconnect the power cord

Handling Description

●Unscrew the retaining screw of power cord with screwdriver.

●Unplug the power cord.

2. Disassemble retaining nut

●Unscrew retaining nut by screwdriver.

3. Disassemble the discharge pipe and the suction and discharge pipe of compressor.

4 . Remove compressor

●Heating suction and discharge pipe by acetylene welding and then unplug them from compressor.

●Conduct nitrogen-fill protection on process pipe and the pressure of nitrogen is

0.5±0.1kgf/c ㎡ ( relative pressure).

●Heat it with caution in case the surroundings get burnt due to high temperature

● Remove the compressor from chassis.

36

MARINE AIR CONDITIONERS MAINTENANCE

5. Fix the new compressor on chassis.

6. Connect the inlet and outlet of compressor with pipeline of system.

7 . Connect power cord of compressor

●Place the new compressor on the accurate position

●Screw up retaining bolts of compressor

●Don’t inversely place the compressor

●Weld suction and discharge pipe by acetylene welding

●Conduct nitrogen-fill protection on process pipe and the pressure of nitrogen is

0.5±0.1kgf/c ㎡ ( relative pressure).

●Heat it with caution in case the surroundings get burnt due to high temperature

●Connect the power cord to retaining bolts according to disassebly sequence.

●Screw the bolts tightly.

8 . Vacuumize system by feeding fluorin nozzle.

●Vacuumize system by feeding fluorin nozzle.

9 . Charge refrigerants again by feeding fluorin nozzle.

●Charge refrigerants again by feeding fluorin nozzle.

●Charge volume must comply with the nameplate.

37

MARINE AIR CONDITIONERS MAINTENANCE

4.2. The 4-way valve

Disassembly and Assembly of the 4-way valve

Remark : Make sure that there isn’t any refrigerant in pipe system and the power supply is cut off before removal of the thermal expansion valve.

Pictorial View Process

1. Disassemble electromagnetic valve.

Handling Description

●Dismantle electromagnetic valve with spanner.

●Remove electromagnetic valve from 4-way valve.

2. Dismantle 4-way valve.

●Heat connecting pipe of 4 vents of

4-way valve by gas welding and then unplug 4-way valve.

●nitrogen-fill protection shall be conducted on welding joint and the pressure of nitrogen is

0.5±0.1kgf/c ㎡

( relative pressure)

●Record the direction of 4-way valve and the position of each vent before remove 4-way valve.

38

MARINE AIR CONDITIONERS MAINTENANCE

3. Remove 4-way valve ●Remove old 4-way valve from pipeline.

4. Install new 4-way valve.

5. Install electromagnetic valve.

6. Inspect the system and charge refrigerants.

●Install the new 4-way valve in correct position and connect it with pipeline correctly.

●Wrap the valve with wet cloth when welding to prevent the slide block inside the valve from burning and prevent water from piping.

●Charge nitrogen to weld and the nitrogen pressure is

0.5±0.1kgf/c ㎡

( relative pressure)

●Install the electromagnetic valve in new 4-way valve.

●Vacuumize and charge refrigerants after confirmation that there is no leakage of the system.

39

MARINE AIR CONDITIONERS MAINTENANCE

4.3. Tube in tube heat exchanger

Disassembly and Assembly of tube in tube heat exchanger

Process Pictorial View

1. Disconnect bushing from 4-way valve

2. Unplug pipe clamp

Handling Description

●Heat connecting pipe of bushing and 4-way valve by gas welding and then unplug bushing.

●nitrogen-fill protection shall be conducted on welding joint and the pressure of nitrogen is

0.5±0.1kgf/c ㎡ ( relative pressure)

●Heat it with caution in case the surroundings get burnt due to high temperature

●Unscrew the pipe clamp to disconnect the bushing from side plate of evaporator.

3. Assemble pipe clamp

●Fix the bushing and side plate of evaporator by pipe clamp.

40

MARINE AIR CONDITIONERS MAINTENANCE

4. Connect the bushing with pipeline of 4-way valve

●Weld bushing by gas welding.

●nitrogen-fill protection shall be conducted on welding joint and the pressure of nitrogen is

0.5±0.1kgf/c ㎡ ( relative pressure)

●Heat it with caution in case the surroundings get burnt due to high temperature

4.4. Fan and Fan Motor

Disassembly and Assembly of Fan and Fan Motor

Process Pictorial View

1. Disassemble fan

Handling Description

●Disassemble fan by screwdriver.

2. Install fan ●Fix the fan by screwdriver.

5. EXPLODED VIEWS AND PART LIST

1) Model: CYR7NaK

Exploded View:

41

MARINE AIR CONDITIONERS MAINTENANCE

Parts List:

NO.

1

Name of part

Reverse valve solenoid

15

16

17

18

19

20

21

22

23

24

25

26

8

9

10

11

12

13

14

4

5

2

3

6

7

Temperature sensor

Temperature sensor

Electric box cover

Capacitor

Terminal

Capacitor

Transformer

Main PCB

Electric box

Display panel

Cover assy

Duct connecter

Blower assy

Drain pipe

Clamp

Handle

Condenser fixer

Evaporator assy

Capillary assy

Filter

Condenser coil

Reverse valve assy

Compressor

Remote controller

Condenser fixer

Quantity

1

1

1

1

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

Part code

430004005

01279460

01729602

26235401

021400054

01023908

04103910

11129404

01139404

04143905

00203903

30515028

01346002

3900020721

3900020720

01419405

33010044

42010254

33010013

43110239

30225306

01409405

30295002

01259401

06329402

15019401

42

MARINE AIR CONDITIONERS MAINTENANCE

01283929 1 27 Base/pan

2) Model: CYR9NaK

Exploded View:

Parts List:

NO.

1

4

5

2

3

13

14

15

16

17

18

19

10

11

12

8

9

6

7

Name of part

Reverse valve solenoid

Temperature sensor

Temperature sensor

Electric box cover

Capacitor

Terminal

Capacitor

Transformer

Main PCB

Electric box

Display panel

Cover assy

Duct connecter

Blower assy

Drain pipe

Clamp

Handle

Condenser fixer

Evaporator assy

Part code

430004005

3900020721

3900020720

01419405

33000018

42010254

33010013

43110239

30225306

01409405

30295002

01259401

06329401

150194014

01279460

01729602

26235401

021400054

01009401

1

1

1

2

4

1

1

1

1

1

1

1

1

1

Quantity

1

1

1

1

1

43

MARINE AIR CONDITIONERS MAINTENANCE

20

21

22

23

24

Capillary assy

Filter

Condenser coil

Reverse valve assy

Compressor

25

26

27

Remote controller

Condenser fixer

Base/pan

3) Model: CYR12NaK

Exploded View:

03009405

11129404

01139401

04143903

00120084

30515028

01346002

01283921

1

1

1

1

1

1

1

1

NO.

1

4

5

2

3

10

11

12

8

9

6

7

Name of part

Reverse valve solenoid

Temperature sensor

Temperature sensor

Electric box cover

Capacitor

Terminal

Capacitor

Transformer

Main PCB

Electric box

Display panel

Cover assy

Part code

430004005

3900020721

3900020720

01419405

33010743

42010254

33010010

43110239

30225306

01409405

30295002

01259401

Quantity

1

1

1

1

1

1

1

1

1

1

1

1

44

MARINE AIR CONDITIONERS MAINTENANCE

18

19

20

21

22

23

13

14

15

16

17

Duct connecter

Blower assy

Drain pipe

Clamp

Handle

Condenser fixer

Evaporator assy

Capillary assy

Filter

Condenser coil

Reverse valve assy

24

25

26

27

Compressor

Remote controller

Condenser fixer

Base/pan

4) Model: CYR16NaK

Exploded View:

06329402

150094065

01279460

01729602

26235401

021400054

01023907

04103908

11129403

01139404

04143903

00120084

30515028

01346002

01283916

1

1

2

4

1

1

1

1

1

1

1

1

1

1

1

NO.

1

2

3

6

7

4

5

Name of part

Reverse valve solenoid

Temperature sensor

Temperature sensor

Electric box cover

Capacitor

Terminal

Capacitor

Part code

430004005

3900020721

3900020720

01419405

33010743

42010254

33010013

Quantity

1

1

1

1

1

1

1

45

MARINE AIR CONDITIONERS MAINTENANCE

13

14

15

16

17

18

8

9

10

11

12

19

20

21

22

23

24

Transformer

Main PCB

Electric box

Display panel

Cover assy

Duct connecter

Blower assy

Drain pipe

Clamp

Handle

Condenser fixer

Evaporator assy

Capillary assy

Filter

Condenser coil

Reverse valve assy

Compressor

43110239

30225306

01409405

30295002

01259404

06329402

150094064

01279460

01729602

26235401

021400054

01039405

04103909

11129402

01139405

04143902

00120023

2

4

1

1

1

1

1

1

1

1

1

1

1

1

1

1

1

25

26

27

Remote controller

Condenser fixer

Base/pan

30515028

01346004

01283918

1

1

1

PDM S/N: JF00300224

46

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