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SPECIAL PRECAUTIONS WHEN CHARGING UNIT WITH SCROLL COMPRESSORS

These precautions are intended for use with Scroll compressors only with R22 refrigerants but are not applied to others 
competitive Scroll compressors.
Scroll compressors have a very high volumetric efficiency and quickly pump a deep vacuum if there is insufficient refrigerant 
in the system or if refrigerant is added too slowly. Operation with low suction pressure will quickly lead to very high discharge 
temperatures. While this process is happening, the scrolls are not being well lubricated – scrolls depend on the oil mist in the 
refrigerant for lubrication. A lack of lubrication leads to high friction between the scroll flanks and tips and generates additional 
heat. The combination of heat of compression and heat from increased friction is concentrated in a small localized discharge 
area where temperatures can quickly rise to more than 300

Ý

C. These extreme temperatures damage the Scroll spirals and the 

orbiting Scroll bearing. This damage can occur in less than one minute especially on larger compressors. Failure may occur 
in the first few hours or the damage done during field charging may show up some time later.
Other typical field charging problems include undercharging, overcharging, moisture or air in the system etc. In time each 
one of these problems can cause compressor failure.
Minimal equipment is required for field charging. The minimum equipment required to do a satisfactory job is:-

Set of service gauges

1.

Vacuum gauge

4.

Hoses

2.

Scales

5.

Vacuum pump

3.

Thermometer

6.

The proper refrigerant charge should follow the volume as recommended by manufacturer and recommendation should be 
followed by the installer.

Charging procedures – Single phase compressors

Evacuate the system to -760mmHg. To reduce evacuation time, use short, large diameter hoses and connect to unrestricted 
service ports on the system. Quality of vacuum cannot be determined by time – a reliable vacuum gauge must be used. 
(etc. electronic vacuum gauge)
Turn the refrigerant cylinder upside down, purge the charging hose and charge liquid through the liquid line charging port 
until refrigerant no longer flows or until the correct charge has been weighed in. If additional charge is required start the 
system and slowly bleed liquid into the suction side until the system is full.

It recommends charging liquid in a CONTROLLED manner into the suction side until the system is full

This recommendation does not hold true for reciprocating compressors where liquid charging into the suction side could 
cause severe damage.
Carefully monitor the suction and discharge pressures – ensure that the suction pressure does not fall below 25 psig (1.7 bar) 
at any time during the charging process.

1.

!

 CAUTION

Manifold Gauge will show cylinder pressure rather than suction pressure if the cylinder valve and Manifold 
valve “A” are both open.

Dip-pipe

Liquid withdrawal

Invert cylinder 
without dip-pipe

EN CKE-0911(0)DK(saso).indd   20

12/6/11   3:05:11 PM

Summary of Contents for FHC20JEVLK

Page 1: ...DAIKIN SASO Part No R08019037002 MODELS FHC20JEVLK RD20JEVLK FHC25JEVLK RD25JEVLK FHC30JEVLK RD30JEVLK FHC40JEVLK RD40JEVLK FHC50JEVLK RD50JETLK FHYC20JEVLK RYD20JEVLK FHYC25JEVLK RYD25JEVLK FHYC30JE...

Page 2: ......

Page 3: ...L R Y D20JEVLK 855 628 328 520 179 46 93 149 101 113 603 126 R Y D25 30JEVLK 855 730 328 520 179 46 93 149 101 113 603 126 Dimension Model M N O P Q R S R Y D20JEVLK 164 15 34 23 362 73 75 R Y D25 30...

Page 4: ...2 Outdoor Unit All dimensions are in mm I J J D M E B G O Dimension Model A B C D E F G H I J K L M N O R Y D40JEVLK R Y D50JETLK 1030 826 400 410 57 72 90 40 746 142 60 26 448 22 28 N N K A L E F H...

Page 5: ...orted pictures and static Depending on the type and source of the electrical waves static may be heard even when more than 1m away Please take note of the following important points when installing Do...

Page 6: ...box from the top side of the unit This product is not designed for re packing In case of re packing contact to Daikin Dealer C K U N K E E P B A R For model FH Y C20 25 30 40 50JEVLK Carton Box Top 1...

Page 7: ...t pressure on the resin parts when opening the unit or when moving it after opening Do not move the unit from packaging while moving until it reaches the installation site Use safe material or protect...

Page 8: ...ole for the angle nut on the ceiling and fix the hanging rod The installation template is extended according to temperature and humidity Check on dimensions in use The dimensions of the installation t...

Page 9: ...ompleted connect the flexible drain hose to the drain connector on the indoor unit Drain Test NOTE This Indoor Unit uses a drain pump for condensed water drainage Install the unit horizontally to prev...

Page 10: ...l be followed Con rm that the unit had been switched off before servicing the unit Use screwdriver to unlock the screw on the grille lock cover Remove the grille lock cover and open the intake grille...

Page 11: ...l power supply wires and wires from outdoor unit Remove wire cover by removing 2 screws as shown in Figure C Wires will go through the hole as shown in Figure D and E respectively without crossing the...

Page 12: ...Allow sufficient space for maintenance around the unit Ensure that there is no obstruction of air ow into or out of the unit Remove obstacles which block air intake or discharge The location must be w...

Page 13: ...Obstacle Obstacle Service Space Obstacle C D Obstacle REFRIGERANT PIPING Maximum Allowable Pipe Length and Elevation If the piping is too long both the capacity and reliability of unit will drop As t...

Page 14: ...t the flare nuts mounted on the connection parts of both the indoor unit and outdoor unit into the copper pipes The exact length of pipe protruding from the top surface of the swaging block is determi...

Page 15: ...or 220V 1Ph 60Hz Power supply cable size mm2 Number of conductors 4 0 3 Interconnection cable size mm2 Number of conductors 2 5 4 Recommended time delay fuse A 30 There must be an all pole disconnecti...

Page 16: ...ge range Indoor 220V 1Ph 60Hz Outdoor 220V 3N 60Hz Power supply cable size mm2 Number of conductors 6 0 3 Interconnection cable size mm2 Number of conductors 2 5 4 Recommended time delay fuse A 35 The...

Page 17: ...N Indoor Unit Terminal Block Interconnection Cable Outdoor Unit Terminal Block Power Supply Cable Model Indoor FHYC30JEVLK Outdoor RYD30JEVLK Voltage range Indoor 220V 1Ph 60Hz Outdoor 220V 1Ph 60Hz P...

Page 18: ...uctors 2 5 4 3 Recommended time delay fuse A 35 Model Indoor FHYC40JEVLK Outdoor RYD40JEVLK Voltage range Indoor 220V 1Ph 60Hz Outdoor 220V 1Ph 60Hz Power supply cable size mm2 Number of conductors 6...

Page 19: ...for connecting wires to the power supply terminal block Connect the wires by matching to the indication on terminal block Refer to the wiring diagram attached on the unit Use the correct screwdriver...

Page 20: ...the suction valve 3 way and liquid valve 2 way in anti clockwise direction with 4mm key for hexagon sacked screw Charge Operation This operation must be done by using a gas cylinder and a precise wei...

Page 21: ...FHC30JEVLK FHC40JEVLK Outdoor RD30JEVLK RD40JEVLK Additional charge g m 57 40 Model Indoor FHC50JEVLK Outdoor RD50JETLK Additional charge g m 58 Heat Pump Unit Model Indoor FHYC20JEVLK FHYC25JEVLK Ou...

Page 22: ...Minimal equipment is required for field charging The minimum equipment required to do a satisfactory job is Set of service gauges 1 Vacuum gauge 4 Hoses 2 Scales 5 Vacuum pump 3 Thermometer 6 The prop...

Page 23: ...o that it does not touch the air louver Be sure not to push the sealing material in any farther than about 10mm There are many ways of charging liquid in a controlled manner into the suction side Use...

Page 24: ...Code 1 Room Sensor Open or Short Blink 1 time Blink Fan Blink E1 2 Indoor Coil Sensor Open Blink 2 times Blink Sleep Blink E2 3 Outdoor Coil Sensor Open Blink 3 times Blink Dry Blink E3 4 Compressor...

Page 25: ...r phase protector under normal operation and fault conditions NOTE 1 indicates additional functions for PP01 phase protector 2 When R phase missing no LED or buzzer will indicate the error but relay 7...

Page 26: ...power plug is disconnected It is possible that your delay timer has been set incorrectly The air flow is too low 3 The air filter is dirty The air suction and discharge are clogged The regulated temp...

Page 27: ...o Daikin Dealer Additional refrigerant charge of 0 2kg is needed in order to achieve the stated performance data MODEL INDOOR UNIT FHYC20JEVLK FHYC25JEVLK OUTDOOR UNIT RYD20JEVLK RYD25JEVLK RATED VOLT...

Page 28: ...OUNTRY OF ORIGIN INDOOR UNIT Malaysia OUTDOOR UNIT Malaysia MODEL INDOOR UNIT FHYC30JEVLK FHYC40JEVLK OUTDOOR UNIT RYD30JEVLK RYD40JEVLK RATED VOLTAGE V 220 220 RATED FREQUENCY Hz 60 60 COOLING T1 IND...

Page 29: ...RANT R22 kg 2 60 COUNTRY OF ORIGIN INDOOR UNIT Malaysia OUTDOOR UNIT Malaysia MODEL INDOOR UNIT FHYC50JEVLK OUTDOOR UNIT RYD50JETLK RATED VOLTAGE V 220 RATED FREQUENCY Hz 60 COOLING T1 INDOOR 27DB C 1...

Page 30: ...MEMO...

Page 31: ......

Page 32: ...revise any of the speci cation and design contain herein at any time without prior noti cation Lot 60334 Persiaran Bukit Rahman Putra 3 Taman Perindustrian Bukit Rahman Putra 47000 Sungai Buloh Selang...

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