Related Manuals for Panasonic SCROLL C-SB Series
Summary of Contents for Panasonic SCROLL C-SB Series
- Page 1 Scroll Compressors Application Manual Panasonic Appliances Compressor (Dalian) Co., Ltd. Ver.201909...
-
Page 2: Table Of Contents
TABLE OF CONTENTS Safety Instructions ..........................1 1.0 Structure and Operating Characteristics ..................2 1.1 Key Components ........................2 1.2 Scroll Compressor Operating Characteristics ................4 1.3 Compressor Design Pressure ....................5 1.4 Refrigerant Oil .......................... 5 1.5 Motor Type ..........................5 2.0 System Design Considerations .................... -
Page 3: Safety Instructions
Safety Instructions Panasonic scroll compressor meets strict safety and operating standards. As the installer or service person, it is an important part of your job to read this instruction carefully before beginning. ●Make sure the unit utilize grounded connection. ELECTRICAL ●Disconnect all input power before servicing. -
Page 4: Structure And Operating Characteristics
1.0 Structure and Operating Characteristics 1.1 Key Components C-SB and C-SC series scroll compressors are manufactured in Panasonic Appliances Compressor (Dalian) Co., Ltd. 1.1.1 C-SB Series Scroll Compressors C-SB series are vertical hermetic scroll compressors. The discharge baffle divides the compressor into two rooms: high-pressure room and low-pressure room. - Page 5 1.1.2 C-SC Series Scroll Compressor The C-SC series are vertical scroll hermetic compressor, which are configured with the motor below the pump assembly. The fixed scroll divides the compressor into two rooms: high-pressure room and low-pressure room. The motor is fixed between main frame and bearing plate by screws .The fixed scroll is fixed to the main frame by screws and the orbiting scroll rotates on the main frame.
-
Page 6: Scroll Compressor Operating Characteristics
1.2 Scroll Compressor Operating Characteristics Panasonic scroll compressor is designed with fixed eccentric and tip seals for axial sealing, resulting in low sound level and minimal gas leakage and therefore excellent efficiency. Separation of suction gas from the discharge side reduces heat transfer, further improving efficiency. -
Page 7: Compressor Design Pressure
3) Prevent refrigerant leakage at sealing surface. 4) Rust proof. 1.5 Motor Type Panasonic scroll compressors can be applied under variable types of power sources, the motor type is shown in Table 1-3. Table 1-3 Type of Motor Motor voltage code... -
Page 8: System Design Considerations
2.0 System Design Considerations 2.1 Air-Conditioning System Design Criteria 2.1 .1 Condensing Pressure and Evaporating Pressure The recommended condensing pressure and evaporating pressure for R22 systems at standard conditions are shown in the table 2-1 according to JIS standard. Table 2-1 Recommended condensing and evaporating pressure Pressure Cooling Heating... - Page 9 the inlet of expansion valve or capillary full of liquid state refrigerant. On the contrary, the insufficient sub cooling will cause flash gas occurring at the inlet of expansion valve, which will result in capacity reduction and increasing vibration, noise. 2.1.3 Superheating Degree In order to prevent compressor from flooded back operation, a minimum suction superheating degree of 5K [10F], and a minimum sump superheating degree of 12K [21F] must be maintained.
-
Page 10: Selection Of Electrical Wiring
2.2 Selection of Electrical Wiring Voltage drop may occur due to the large current draw during compressor starting. The starting failure will occur if the starting voltage is under the range of compressor specifications, .So it is necessary to select the proper size of electrical wire. - Page 11 2.2.2 Selection of Electrical Wiring The recommended wiring size is shown in the table 2-3. Power Type of Unit ① ① Power source Window & Commercial Type Unit terminal ③ ③ compressor compresso terminal plate indoor indoor Split Type (Separate Type) ②...
-
Page 12: Voltage Balance
This will allow the compressor to be de-energized for at least 3 minutes after each power interruption. 2.6 Protection Devices 2.6.1 Internal Motor Protector Panasonic scroll compressors are protected by internal linebreaks on the motor windings for single phase and three phase models. Internal linebreaks respond to over-current, high temperature and a combination of both. - Page 13 2.6.2 Protection Devices Required For air-conditioning or heat pump unit, the following protective devices should be installed: 1) Reverse Phase Protector Scroll compressor will only compress in one rotational direction. This is very important for three phase compressors since three-phase induction motor will run in either rotational direction equally depending on phasing of the power.
- Page 14 It may cause the damage of the scroll plates. Panasonic recommends crankcase heaters should be used on all applications to ensure long lasting reliability. A 35-Watts crankcase heater is recommended for C-SB series and an 88-Watts crankcase heater for C-SC series.
- Page 15 Figure 2-3 Position of crankcase heater fo C-SC models High-Pressure Switch Panasonic scroll compressors require a high-pressure switch in order to protect the compressor during blocked fan or fan failure conditions. The recommended settings are shown in Table 2-5 Table 2-5 High Pressure Switch Setting...
-
Page 16: Application Standard & Limit (For R22, R407C And R410A)
2.7 Application Standard & Limit (For R22, R407C and R410A) The following requirements apply to vertical type hermetic scroll compressors: Standard: Applicable to ordinary conditions in Japan JIS B8616 or standards relative to JIS B8616, such as standard rating conditions, maximum operating conditions, low temperature conditions, etc. Limit: Applicable to transitional brief period, such as starting and beginning of defrost mode. -
Page 17: Compressor Selection Table
2.8 Compressor Selection Table The successful application of scroll compressor is dependent on a good match between system design and compressor. Please fill in the following table and inform us. Table 2-7 [Required Information for Selection] Company Name: Data: *[ ] Split system [ ] else Type of unit *[ ] Air conditioning ] Heat pump... -
Page 18: System Test Data Table
2.9 System Test Data Table In order to make better application of the compressor, the system test result is very important for both sides. Please fill the table below and inform us. [System Test Result] Data: System Model : Compressor Model: Refrigerant charge: Power source: 2.9.1 Maximum operating condition... - Page 19 2.9.2 Low-Temperature Operation Test 1) Table 2-10: Temperature Conditions Mode Indoor Outdoor DB/WB ℃ or Cooling DB/WB: ℃ Water Inlet/ Outlet ℃ DB/WB: ℃ or Heating DB/WB: ℃ Water Inlet/Outlet ℃ 2) Table 2-11: Performance data Cooling Heating Item Minimum Rated Maximum Minimum...
- Page 20 2.9.3 Start performance and Voltage drop performance Table 2-12: Customer’s Customer’s Test Tested item Test result Remark test standard Judgment Condition Voltage drop under overload conditions Restart after overload operation Restart with liquid refrigerant depositing in compressor 2.9.4 The Sample Compressors Information 1) Total sample quantity: 2) Series numbers of the tested samples: 3) The date of receiving the samples:...
-
Page 21: Assembly And Manufacturing Process Considerations
Do not use the compressor from which the discharge sound cannot be heard when removing rubber plugs. 3.2 Compressor Mounting Please use the mounting accessories (grommets and sleeves) that are supplied or specified by Dalian Panasonic, as shown in Figure 3-1. 1-Mounting Grommet 2-Mounting Sleeve Figure 3-1 Mounting Parts for C-SB 3.3 Residual Moisture... - Page 22 3.4.1 Brazing material: A silver-phosphorus and other silver brazing materials are recommended for all kinds metal brazing. A copper- phosphorus brazing material is also acceptable for copper brazing. See Table 3-1 for recommended brazing materials. Table 3-1: Recommended Brazing Material Metal Silver (%) JIS Code...
- Page 23 Table 3-2 The clearance and length Piping Minimum Insertion Clearance O.D.(mm) Length L1 (mm) D-d (mm) 0.05~0.35 8~12 0.05~0.35 12~16 0.05~0.45 16~25 0.05~0.45 25~35 0.05~0.55 35~45 0.05~0.55 3.4.4 Brazing Procedures See Figure 3-3 for brazing area. Figure 3-3 a) A double-tipped torch is recommended during brazing; b) Clean the compressor tubing and system piping prior to assembly;...
-
Page 24: Leakage Test
3.8 Wiring Connections PANASONIC scroll compressors will only compress gas in the counterclockwise direction when viewed from the top. Since single phase motors start and run in only one direction, reverse rotation is not a major consideration. -
Page 25: Terminal Cover And Clip
direction. Verification of proper rotation is done by observing suction and discharge pressures when the compressor is operating. A decrease in discharge pressure and an increase in suction pressure indicate reverse rotation. After several minutes of operation the compressor internal linebreak will de-energize the compressor. In order to correct this situation, disconnect the power and switch any two power leads at the unit contactor. - Page 26 3.12.1 Compressor Functional Check The following procedures should be followed to determine if the compressor is functioning properly: 1) Voltage of the unit should be measured and verified as correct. 2) An evaluation of the electrical system should be performed next. The motor should be checked by using continuity and short to ground testing.
- Page 27 3.12.4 Brazing Procedure See figure below for the procedure for field servicing. Figure 3-5 To disconnect: 1) Disconnect power and remove wires from terminal box. 2) Insure ALL pressure is out of the system (check high and low sides). 3) Heat areas 2 and 3 slowly and uniformly until braze material softens and the tube can be removed from the compressor fitting.
-
Page 28: Other Consideration
The field information should be returned together with compressor. It is strongly recommended to record as detailed as possible for the accurate failure analysis. 3.13 Other Consideration 1) Installation should be completed within 15 minutes after removing the rubber plugs. Do not use the compressor to compress air. -
Page 29: Troubleshooting
4. 0 Troubleshooting Problem Check Point Probable Causes Power source switch off Power source Fuse blown Too low voltage at compressor terminals Wiring Disconnection of wiring Improper setting of temperature controller Protection devices trip (Discharge temp. High-Low pressure Compressor Switch etc.) Control devices failure to start Loss of Phase... - Page 30 Problem Check Point Probable Causes During off cycle, liquid refrigerant migrates to the compressor and Flooded-start mixed with lubricant oil Refrigerant overcharged Piping Resonance vibration occurs Electromagnetic noise of motor Abnormal running noise Lack of oil in the compressor Worn or broken components inside of compressor Compressor Contaminations mix in compressor Reverse rotation of compressor...
-
Page 31: Explanation For Faq
5. 0 Explanation for FAQ 5.1 Refrigerant oil mixture with liquid refrigerant will result in lower insulation resistance value and higher leakage current readings. Solution: It is recommended to operating the system for a brief time to redistribute the refrigerant through the system. - Page 32 3) Reset time When internal motor protector has tripped, it will take 30 to 40 minutes to reset and then the compressor will restart. 4) Notice in field application On a field application, when the internal motor protector has tripped, the compressor will stop while each of 3 terminals is still energized, to which either the customer or serviceman may regard the compressor as fail down.