Mitsubishi Electric PFD-P-VM-A Manual Download Page 42

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Details of Maintenance/Inspection

· Check for unusual noise
· Measure the insulation

resistance

· Check for excessive slack
· Check for wear and tear
· Check for unusual noise

· Check for unusual noise

· Free of unusual noise
· Insulation resistance over 1M

Ω

· Resistance (3-4kg/belt)
· Adequate amount of slack=5mm
· Belt length=no longer than

102% of the original length

· Free of wear and tear
· Free of unusual noise

· Free of unusual noise

Replace when insulation
resistance is under 1M

Ω

· Check for clogging of the

drainage system

· Check for loosened bolts
· Check for corrosion

· Clean, free of clogging
· Free of loose screws
· No major disintegration

Clean if dirty or clogged
Tighten bolts
Replace if extremely worn

· Perform an operation check

using the operation data

· Adequately controls the air

temperature
(Check temperature change on
the centralized controller)

Replace if malfunctioning

· Check for torn wire, fraying,

and unplugged connectors

· Check insulation resistance

· No frayed or cut wires or

unplugged connectors

· Insulation resistance over 1M

Ω

Replace when cut or shorted,
when the insulation resistance
goes below 1M

Ω

, or if there is a

history of abnormal operation

· Check for unusual sound
· Measure insulation resistance
· Look for abnormal history

· Free of unusual sound
· Insulation resistance over 1M

Ω

· No heatsink overheat protection

(4230,4330) on the report

Replace when producing unusual
sounds, when insulation resistance
goes under 1M

Ω

, or if there is a

history of abnormal operation.

· Perform an operation check

using the operation data

· Adequately controls the air

temperature
(Check temperature change on
the centralized controller)

Replace if malfunctioning

· Check for clogging, dirt, and

damage

· Clean, free of clogging or

damage

Clean

· Check for unusual noise
· Measure insulation resistance

· Free of unusual sound
· Insulation resistance over 1M

Ω

Replace if insulation resistance
goes below 1M

Ω

· Make sure the lamp comes on

· Comes on when the output is

Replace if the light does not
come on when the power is on

· Check for clogging, dirt, and

damage

· Clean, free of clogging or

damage

Clean

· Check for clogging and tear
· Clean the filter

· Clean, free of damage

Clean the filter
Replace if extremely dirty or
damaged

· Check the outer appearance
· Make sure its free of foreign

objects

· Free of frayed or cut wires
· Free of foreign objects

Replace if damaged or
extremely worn
Remove foreign objects

· Make sure the loop of the hose

has water to prevent air from
traveling through the hose
(Fill the hose with water)

· Check for clogging of the

drainage system

· Clean, free of clogging
· Free of wear and tear

Clean if dirty or clogged
Replace if extremely worm

· Check for unusual noise
· Check insulation resistance
· Check for loosened terminals

· Free of unusual sound
· Insulation resistance over 1M

Ω

· Free of loosened terminals

Replace if insulation resistance
goes below 1M

Ω

(under the

condition that the refrigerant
is not liquefied)
Tighten loosened bolts

Adjust the belt
Replace if the belt length
exceeds 2% of the original
length, worn, or used over 8000
hours

If the noise doesn't stop after
lubrication, change the oil.
Add lubricant once a year.

Parts

Fan motor

Bearing

Fan belt

Air filter

Linear
expansion valve

Indicator lamp

Compressor

Fan motor

Linear
expansion valve

months

Check points

Inspection

Cycle

Unit

What to do

Assessment

Drain pan

Drain hose

Inverter cooling
fan

Float switch

Heat exchanger

Pressure switch

Heat exchanger

Indoor

Outdoor

year

Summary of Contents for PFD-P-VM-A

Page 1: ...3 Types of switch settings and setting methods 8 4 Wiring and Address Setting System Using MA Remote Controller 8 5 External input output specifications 9 Air Conditioning the Computer Room 9 1 Main Features of the Floor Duct Air Conditioners 9 2 Major Characteristics of Computer Room Air Conditioners 9 3 Step by Step Plan for the Implementation of the Air Conditioning 9 4 Conditions for the Insta...

Page 2: ...its 3 Indicates TB7 type transmission line that allows the unit to communicate with the controller When using a PFD P250VM A as an indoor unit connect an outdoor unit PUD P250YMF C to each indoor unit and operate with a built in remote control for the indoor unit 1 Bold line indicates refrigerant piping gas liquid This system consists of one refrigerant circuit 2 Indicates TB3 type transmission li...

Page 3: ...W Power source 1 2 kW A m3 min kW kW A kW mm dB A kg Power input Current Fan Airflow rate Type Quantity Motor output Type Motor output Crankcase heater Compressor Refrigerant Lubricant External finish High pressure protection Inverter Compressor Fan External dimension Protection devices Refrigerant piping diameter Liquid Gas Noise level Note Cooling capacity indicates the maximum value at operatio...

Page 4: ...ipe dimension Gas Flare Liquid Flare Drain pipe dimension Note 1 Cooling capacity indicates the maximum value at operation under the following conditions Indoor 27 CDB 19 CWB Outdoor 35 CDB 2 Measured in an anechoic room Noise level Lo Mid2 Mid1 Hi 3 phases induction motor 5Y 7 1 1895 1 800 800 480 350 Cross fin Aluminum plate fin and copper tube Sirocco fan 2 Sirocco fan ø 28 58 ø 28 58 2 ø 12 7 ...

Page 5: ... 35 40 45 Outdoor Temperature CDB Ratio Outdoor Temperature CDB Ratio Indoor Temperature CWB Indoor Temperature CWB 15 CWB 15 CWB 12 CWB 12 CWB 17 CWB 17 CWB 19 CWB 19 CWB 24 CWB 24 CWB 21 CWB 21 CWB 2 2 Cooling Input The correction curves indicate the values measured at the point where the compressor was operated at its maximum capacity indicates the standard value ...

Page 6: ...d Point Indoor 27 CDB 19 CWB Outdoor 35 CDB 130 120 110 100 0 4 0 5 0 6 0 7 0 8 0 9 1 0 SHF 90 80 70 Standard Capacity Ratio Indoor Temperature 24 CDB 0 4 0 5 0 6 0 7 0 8 0 9 1 0 30 40 50 60 70 80 RH 30 40 50 60 70 80 RH SHF 130 120 110 100 90 80 70 Standard Capacity Ratio 0 93 Indoor Temperature 27 CDB ...

Page 7: ...lent length Actual piping length to the farthest indoor unit 0 50 number of bent on the piping m How to obtain piping equivalent length Cooling capacity correction factor 1 0 0 9 0 8 0 7 20 0 40 60 80 100 120 140 Piping equivalent length m 2 5 Operation limit Indoor temperature CWB 15 0 5 10 5 10 15 20 25 30 35 40 45 10 12 15 20 25 30 Outdoor door temperature 0 CDB 43 CDB with outdoor unit at lowe...

Page 8: ...und Levels 3 1 Noise Level 7 1m 1m Measured point Series Noise Level dB Type A PFD P250VM A 59 PFD P500VM A 64 1 Outdoor Unit 2 Indoor Unit Measured point 1m 1m Series Noise Level dB Type A PUD P250YMF C 56 ...

Page 9: ...c pressure Pa NC60 NC50 NC40 NC30 NC20 Approximate minimum audible limit on continuous noise 80 70 60 50 40 30 20 63 125 250 500 1000 2000 4000 8000 10 0 OCTAVE BAND PRESSURE LEVEL dB 0dB 20µPa OCTAVE BAND CENTER FREQUENCIES Hz PUD P250YMF C External static NC70 pressure 0Pa NC60 NC50 NC40 NC30 NC20 Approximate minimum audible limit on continuous noise 80 70 60 50 40 30 20 63 125 250 500 1000 2000...

Page 10: ... for the power supply ø 27 Knockout hole Bottom side hole for the control wiring 1715 5 12 50 Crosss section Y Y Y Y Note1 215 1490 215 Knockout hole Left side view ø 40 Knockout hole Left side hole for the power supply ø 27 Knockout hole Left side hole for the control wiring Knockout hole Left piping hole Conn pipe ø 28 58 brazed Refrig service valve liquid ø 12 7 flare Refrig service valve gas f...

Page 11: ... controller Control box 205 340 420 Indoor Unit Air inlet 200 400 120 210 supplied with the unit Note1 For right hand side piping the minimum space of 200mm on the right side must be increased to a minimum of 500mm Note2 If a minimum space of 880mm is secured the panel can fully be opened PFD P250VM A Unit mm 11 Discharge air outlet height Drain water outlet height 180 770 1050 1160 620 413 473 39...

Page 12: ... a minimum of 500mm Note2 If a minimum space of 880mm is secured the panel can fully be opened Accessories Lifting bolts 4pcs Refrigerant gas conn pipe ø 28 58 brazed 2pcs Packing for flange 2pcs Insulation cover for flange 2pcs Flare nut liquid 2pcs PFD P500VM A Unit mm Hole for gas pipe connecting ø 48 Hole for liquid pipe connecting ø 27 50 50 50 110 370 186 370 218 100 270 340 70 1650 70 15 17...

Page 13: ...1 2 2 3 2 2 3P CN20 3 1 1 3P CN33 3 2A F 250VAC F01 1 5 3 2 2 4 1 3 6 5 5 1 4 3 2 2 1 3 5 4 4 3 2 5 1 6 7 3 2 1 1 2 2 1 8 1 7 6 3 2 1 1 4 2 3 3 4 2 5 R6 PE L3 1 L1 M1 M2 S L2 Refer to the service handbook about the switch operations CNDC1 4P 1 2 3 4 1 2 3 4 5 9 8 7 6 1 2 3 4 5 CNDR2 9P 14 13 11 10 12 12 1011 1314 5 4 3 2 1 6 7 8 9 5 4 3 2 1 6 7 8 9 Yellow Orange Purple Black White Gray 5 1 2 3 4 F...

Page 14: ...als he address of the connected indoor unit 50 4 Conventions terminal bed connector board insertion connector or fastening connector of control board Address odd SWC SWA TB22 IFB Terminal bed for distant location display Thermistor outlet temp detection Thermistor piping temp detection liquid Thermistor piping temp detection gas Auxiliary relay fan Auxiliary relay fan failure detection No voltage ...

Page 15: ... 9 0 9 A B C D E F 1 2 3 4 5 6 7 8 0 8 7 6 5 4 3 2 1 9 1 2 3 4 5 6 7 8 9 0 9 A B C D E F 0 TB5 1 TB2 TB5 2 FAN over current detection RC SHIELD TB15 Address odd Address even TB22 IFB Terminal bed for distant location display Thermistor outlet temp detection Thermistor piping temp detection liquid Thermistor piping temp detection gas Auxiliary relay fan Auxiliary relay fan failure detection No volt...

Page 16: ...High efficiency filter 65 2 High efficiency filter 90 2 1 Used to connect Intake Duct Use the filter supplied with the unit 2 Requires square duct flange High Efficiency Filter PAC TS60AF PAC TS62AF PAC TS65AF PAC TS67AF P250 P500 P250 P500 Square duct flange High efficiency filter Square duct flange Standard filter 1 ...

Page 17: ... Circuit Diagram And Thermal Sensor PUD P250YMF C HEX2 HEX1 TH6 SV3 CJ1 CJ2 63H SV1 SV2 CV2 CV1 TH1 ST5 MA SA SLEV TH7 ST4 LEV1 SCC Comp O S Drier TH10 CP TH8 CP3 TH5 ST3 TH9 TH2 ST2 BV2 Indoor units ST1 BV1 63LS 63HS ...

Page 18: ...t circuits Record the length of the pipe and the amount of the added refrigerant on the outdoor unit for services in the future Calculating the amount of refrigerant to be added The amount of refrigerant needed for additional piping depends on the diameter and the length of the added liquid pipes Calculate the amount to be added as shown on the right and add the refrigerant in that amount Round up...

Page 19: ...ting methods Whether a particular system requires switch settings depends on its components Refer to the section 7 4 Wiring and Address Setting before conducting electrical work Keep the power turned off while setting the switches If settings are changed while being powered the changed settings will not register and the unit may malfunction Symbol Outdoor unit OC Indoor unit 10HP has only the main...

Page 20: ... another refrigerant system choose a different one in the range specified above 3 When setting the address to 100 set the switch to 50 Assign a number to all indoor units starting with 1 and using sequential numbers Use odd numbers for the top controller and even numbers for the bottom controller of the indoor units Use odd numbers starting with 01 for 10HP system Add 50 to the address assigned to...

Page 21: ...ove 1 25mm2 L1 200m 1 Use power supply connector CN41 on the outdoor unit as is 2 It is not necessary to ground the S terminal of centralized control transmission terminal board TB7 on the outdoor unit OC TB3 TB7 E A B A B S 51 IC MA TB5 1 A B S 01 TB15 1 2 A1 B2 L1 Use CN41 as is There is one indoor controller board inside indoor unit 1 System with one indoor unit 10HP system ...

Page 22: ...terminal board TB5 b Switch Setting Set the address as follows MA remote controller Sub Controller Main Controller MA MA 3 n a Main Unit or Controller Address Setting Range Steps Factory Setting Setting Procedures Indoor Unit Outdoor Unit Main Unit IC OC 1 2 Remarks 51 100 Sub controller 01 50 00 00 Set the address for the controller at the top of the indoor unit Start with 01 then use sequential ...

Page 23: ... of the outdoor units S terminal of TB7 centralized control transmission terminal a Indoor Outdoor transmission line Maximum Length above 1 25mm2 L1 L2 200m b Transmission line for centralized control Maximum length via outdoor unit over 1 25mm2 L1 L3 L2 500m NO NO OC TB3 TB7 E A B A B S 51 IC MA TB5 1 A B S 01 TB5 2 A B S TB15 1 2 A1 B2 02 OC TB3 TB7 E A B A B S 52 L31 L1 L2 Use CN41 as is There ...

Page 24: ...line Grounding the shield line Connect S terminals of the TB7 of each of the outdoor units with each other Connect the S terminal of TB7 on the outdoor unit whose CN41 was replaced with CN40 to the earth terminal of the electric box c Switch Setting Set the address as follows MA remote controller Sub Controller Main Controller MA MA 3 n a Main Unit or Controller Address Setting Range Steps Factory...

Page 25: ...an be connected to the indoor unit in the same group Disconnect the MA remote control wire from TB15 if using more than 2 remote controllers a Indoor outdoor transmission line Same as 2 b Transmission line for centralized control Same as 2 c MA remote controller wiring Maximum allowable length 0 3 1 25mm2 m1 m2 200m NO NO NO OC TB3 TB7 E A B A B S 51 IC MA Main TB5 1 A B S 01 TB5 2 A B S TB15 1 2 ...

Page 26: ...oller d Switch Setting Set the address as follows MA remote controller Sub Controller Main Controller MA MA 3 n a Main Unit or Controller Address Setting Range Steps Factory Setting Setting Procedures Indoor Unit Outdoor Unit Main Unit IC OC 1 2 Remarks 51 100 Sub controller 01 49 00 00 Set the address for the controller at the top of the indoor unit Start with 01 then use sequential odd numbers i...

Page 27: ...ote control wire from TB15 if using more than 2 remote controllers a Indoor outdoor transmission line Same as 2 b Transmission line for centralized control Same as 2 c MA remote controller wiring Maximum allowable length 0 3 1 25mm2 m1 m2 m3 200m NO NO OC TB3 TB7 E A B A B S 51 IC MA Main TB5 1 A B S 01 TB5 2 A B S TB15 1 2 A1 B2 02 OC TB3 TB7 E A B A B S 52 OC TB3 TB7 E A B A B S 53 IC MA Sub TB5...

Page 28: ...the indoor units as sub controller d Switch Setting Set the address as follows MA remote controller Sub Controller Main Controller MA MA 3 n a Main Unit or Controller Address Setting Range Steps Factory Setting Setting Procedures Indoor Unit Outdoor Unit Main Unit IC OC 1 2 Remarks 51 100 Sub controller 01 49 00 00 Set the address for the controller at the top of the indoor unit Start with 01 then...

Page 29: ... Replace CN41 with CN40 There is one indoor controller board inside indoor unit Connect 1 Use odd numbers to set 10HP indoor unit address 2 When setting unit address for 20HP indoor unit use odd numbers for the top controllers and even numbers for the bottom controllers main controller 1 3 Replace CN41 power supply switch connector with CN40 on only one 20HP outdoor unit 4 Ground the S terminal of...

Page 30: ...mote controller Sub Controller Main Controller MA MA 3 n a Main Unit or Controller Address Setting Range Steps Factory Setting Setting Procedures Indoor Unit Outdoor Unit Main Unit 10HP 20HP IC OC 1 2 Remarks 51 100 Sub controller 01 49 00 00 Set the address for the controller at the top of the indoor unit Start with 01 then use sequential odd numbers i e 01 03 05 Add 50 to the address assigned to...

Page 31: ...minal board for centralized controller on the outdoor unit 5 No more than two main sub remote controllers can be connected to the indoor unit in the same group When more than two remote controllers are present in the system disconnect MA remote controller from TB15 in the indoor unit 6 Put both types of the addresses for P500 type indoor units in the same group when setting groups for indoor units...

Page 32: ...e 01 03 05 Add 50 to the address assigned to the indoor unit within the same refrigerant system Use dipswitch to set the controller as sub controller Sub Unit 20HP IC 02 50 Add 1 to the address assigned to the main unit in the same room NO NO MA TB15 1 2 A1 B2 OC TB3 TB7 E A B A B S 57 IC MA TB5 1 A B S 07 TB5 2 A B S TB15 1 2 A1 B2 08 OC TB3 TB7 E A B A B S 58 OC TB3 TB7 E A B A B S 55 IC TB5 1 A...

Page 33: ...art External power source Connection to terminal board Connection with connectors L1 L2 L3 L4 SW12 Short Circuit SW11 CN53 1 2 3 4 5 1 2 3 4 5 TB21 TB22 TB23 XA XB XC XE XD XE XD XC XB XA COM 1 2 BC B1 B2 AC A1 Short Circuit A2 3 4 5 CN54 Maximum 100 m Input with Applied Voltage polarized DC12 24V Electrical current input per contact Approximately 10mA DC12V SW12 Remote start stop switch Each pres...

Page 34: ...ts may not operate 2 Do not bundle with high voltage AC220 240V wire since noise interference from such wire may cause the unit to malfunction 3 Do not bundle with minute voltage DC30V or below wire since noise interference from such wire may cause the unit to malfunction Caution 1 Wiring should be covered by insulation tube with supplementary insulation 2 Use relays or switches with IEC or equiva...

Page 35: ...ce the entire floor serves as the air duct 1 Unlike plenum ventilation and overhead duct type conditioners since the conditioned air is not mixed with the air in the room the air that comes out of the unit has to meet the predetermined conditions constant temperature constant humidity at the time the air exits the unit Close attention must be paid to the auto controlling system 2 Dust in the duct ...

Page 36: ...ce earthquake proof anti vibration floor load anti vibration device noise control etc Calculating the Load Setting the Conditions for the Room Temperature humidity Condition Purpose Making decisions on the computer system Accommodates possible future expansion ensuring the acquisition route Operation schedule Back up system in case of breakdowns power outage water supply cut offs etc Air condition...

Page 37: ...e computer 3 Matching the Volume of Air Flow It is possible to use the fan on the computer to cool the room This controlling method requires a certain volume of cold air in proportion to the amount of heat produced by the device The inlet panel is located at the bottom of the unit and the exhaust pipe is located either on the ceiling front and back or on the side 4 Considering a Back up Air Condit...

Page 38: ...air conditioning system are set air conditioning capacity has to be determined by calculating the load 2 Unlike the outdoor air computer load remains constant throughout the year However it is possible that there are considerable fluctuations within a day This is due to the fact that depending on the time of the day there are changes in the number of computers that are turned on and that the diffe...

Page 39: ... 8 kW Total Infiltration draft Number of people in the room Outside air 39 6 834 0 0117 5 persons 82 125m3 834 0 0117 0 39 kW 0 41 kW 1 22 kW 2 0 kW Total 26800 0 336 24 18 V 60 221m3 min Calculate the temperature difference by setting the outdoor temperature then calculate hourly loads The chart shows the result of a calculation supposing that the system reaches its highest load at 12 o clock Out...

Page 40: ...oling temperature with a built in controller suction temperature or discharge temperature control This unit is designed for high sensible heat specifications and it does not include a humidifier or a dehumidi fier Install such components as necessary 1 Bold lines in the diagram indicate refrigerant piping gas liquid This system consists of 2 refrigerant circuits 2 Indicates TB3 type transmission l...

Page 41: ...s an approximate longevity of parts It is an estimation of the time when old parts may need to be replaced or repairs need to be made It does not mean that the parts must absolutely be replaced except for the fan belt Please note that the figures in the chart do not mean warranty periods 2 Notes The above chart shows a maintenance schedule for a unit that is used under the following conditions A L...

Page 42: ...ioning Check for clogging dirt and damage Clean free of clogging or damage Clean Check for unusual noise Measure insulation resistance Free of unusual sound Insulation resistance over 1MΩ Replace if insulation resistance goes below 1MΩ Make sure the lamp comes on Comes on when the output is on Replace if the light does not come on when the power is on Check for clogging dirt and damage Clean free ...

Page 43: ...FICE MITSUBISHI DENKI BLDG 2 2 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN Issued in June 2004 MEE03K204 A Printed in Japan New publication effective June 2004 Specifications subject to change without notice ...

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