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Installation Guide for Danfoss models including: CTM 6 Multi Ejector, CTM 6, Multi Ejector, Ejector
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DocumentDocument032R9797 032R9797 ENGINEERING TOMORROW Installation guide Multi Ejector type CTM 6 ugov.ua English Refrigerant: R744 with oil Max. Working Pressure: 140 bar / 2031 psi Ambient temp. range: -10 °C +50 °C / 14 °F 122 °F Media temp. range: -10 °C +50 °C / 14 °F 122 °F Max. OPD: 90 bar / 1305 psi Min. OPD: 0.1 bar / 1.45 psi Connector positions CTM 6 Pressure transmitter (Pgc) B Ejector Ejector Ejector Ejector Ejector Ejector 12345 6 Label Strainer High pressure inlet A Pressure transmitter (P0) D Pressure transmitter (Prec) F Suction inlet C Receiver E WARNING! The CTM Multi Ejector valve is approved for use only with Danfoss controller type AK-PC 78x, AK-CC 550A or AK-CC 750A and AK-SM 8xx. DISCLAIMER Danfoss expressly disclaims, and any responsibility or liability, whether based on contract, breach of warranty, tort, statute or otherwise, shall be excluded, if the CTM Multi Ejector valve is used with any controller other than a Danfoss controller type AK-PC 78x, AK-CC 550A or AK-CC 750A and AK-SM 8xx. For further information on AK-PC, please see separate document. · Do not disassemble / assemble the parts unnecessarily to avoid risk of breaking the O-ring, dirt in the valve etc. WARNING! · Avoid high mechanical stress in connection with tube mounting / welding. · Do not remove connectors during welding / brazing. General installation · Always place the ejector with the coils upwards so the check valve inside can use gravity to close. · Coils available in 110-120V AC and 230V AC, 50/60Hz. · It is recomended to place shut-off valves on all 3 connections. · C and D connections can be moved from one side to the other if needed. Please be aware of the torque of the screws. · Evacuating the ejector is recommended to do on the outlet and on the high pressure side. · Pressurizing the ejector should be done from the suction side first (Suction inlet C). · It is recommended to install ejector after suction filter (Suction inlet C). © Danfoss | DCS (rm) | 2019.11 DKRCC.PI.VM0.A2.02 | 1 Danfoss 32F876.10 Mounting: With coils upwards CTM Multi Ejector needs to be fixed to the rack frame using 4 holes in the aluminum block do avoid stress on the connectors Brazing Welding N2 N2 Danfoss 032F842.11 Max. 75 °C / 167 °F Max. 700 °C / 1300 °F Danfoss 032F841.11 Max. 75 °C / 167 °F Recommendation for brazing Recommendation: brazing nozzle 4 - 6 mm ( 5/32 in - /15 64 in) Materials used for brazing: · Flux: Metalli tenacity No. 5 Powder or Braze Tec special h paste. · Filler: Silver-Flo 55 (BS:AG 14/ DIN L-Ag55 Sn) or Silver-Flo 56 (AWS B Ag-7). Recommendation for TIG welding · Power approximately 60 A. · Use Shield gas charge - Argon. · Material for welding - approximately 2 mm thick stainless steel alloy. Warning: Filler metals containing Phosphor i.e. BS: CP 1/ DIN L-Ag 15P or BS: CP 3/ DIN L-Ag P7 must not be used. Coil On Off Click! Danfoss 32F1002.10 Warning Be sure that the O-ring is in place. Danfoss 32F1004.10 Mounting DIN plug / LED DIN plug. © Danfoss | DCS (rm) | 2019.11 Danfoss 32F882.10 Warning Danfoss 32F1004.10 Never switch on power to the coil when it is dismounted from the valve. There is a danger the coil may be damaged and a risk of injuries and burns. Armature tubes are sensitive and have to be protected during the installation: · do not damage the armature tubes with strokes or forces · do not lift or handle the block by lifting the armature tubes etc. · avoid pull-forces on the wires connected to the coils DKRCC.PI.VM0.A2.02 | 2 Starting up /Operation: Opening sequence: 1 - connector A 2 - connector C 3 - connector E Follow the opening sequence to avoid too high NRV differential pressure. Service Mounting and service of ejectors Liquid ejectors* and then high pressure ejectors with the highest capacities (longest ejectors) must be placed closest to the suction connector C. Any blank ejector must be placed closest to the suction connector C. *aplicable only for CTM 6 Combi For mounting of pressure transmitter MBS 8250 (064G1136) B A Starting up the system: open all connection ball valves slowly (avoiding liquid hammer that can damage internal check valve (NRV) and build-in strainer. It is mandatory to clean the strainer after 2 days of running the system. O-rings needs to be replaced with the two new ones placed on the strainer top. Removed O-rings to be placed on the strainer top and reused after return to initial shape during next strainer maintenance. Strainer cleanliness is important for proper operation of Multi Ejector and the cleaning shall be repeated if necessary every 2-3 weeks to remove the dirt circulating in the system. A: Inlet connector Gas cooler outlet - Ball valve - inlet connector Combi brazing 7/8 inch ODF - weld 3/4 inch (EN10220) B: Inlet measurement port G 7/16 inch - 20 UNF C: Suction connector MT evaporator outlet - Ball valve - suction connector Combi brazing 7/8 inch ODF- weld 3/4 inch (EN10220) D: Suction measurement port G 7/16 inch - 20 UNF E: Outlet connector Outlet connector - Ball valve - Receiver Combi brazing 1 inch ODF - weld 11/8 inch (EN10220) F: Outlet measurement port G 7/16 inch - 20 UNF Pressure transmitter connections A B D C Pressure transmitter Type MBS 8250 F Warning: Danfoss 32F880.10 E C Ratiometric Pin 1 (A): + supply Pin 2 (B): - supply/common Pin 3 (C): output Do not disassemble / assemble the parts unnecessarily to avoid risk of breaking the O-ring, dirt in the valve etc. Insulation of Multi Ejector Requirements for materials used for insulation: · has to be based on a synthetic rubber base or ex Polyurethane · water vapor diffusion resistance number 7000 · thermal conductivity 0,033 W/(m·K) · insulations material thickness 5 mm · for use at low temperature -10°C or lower · for use at high temperature +50°C or higher · glue or adhesive made of Poly chloroprene or it is Silicone type Do not insulate the coils of Multi Ejector Exchange of connectors A C and pressure transmitters D B Tightening sequence Torque 6 mm screws: 10 Nm ± 1 Nm Torque for mounting pressure transmitters 32,5 Nm ± 2,5 Wrench 22 mm Allen key 5 mm Torque 6 mm screws: 10 Nm ± 1 Nm Allen key 5 mm Torque 8 mm screws: 27.5 Nm ± 2.5 Nm Allen key 6 mm © Danfoss | DCS (rm) | 2019.11 Danfoss 32F1000.10 DKRCC.PI.VM0.A2.02 | 3 Service © Danfoss | DCS (rm) | 2019.11 Service on strainer 3 Allen key 5 mm 1 2 Remove strainer from valve body Service on ejector 5 mm allen key 4 5 6 5 mm allen key Torque 6 Nm ± 1 7 = compressor oil Tightening sequence A C D B Danfoss 32F855.10 8 Allen key 5 mm Torque 10 Nm ± 1 Dismount strainer Clean or replace strainer and replace O-ring Assemble strainer Oil O-rings and place strainer in valve Mount the strainer with screws 3 Allen key 5 mm 1 2 Remove ejector from valve body Replace complete ejector Tightening sequence A C D B Allen key 5 mm Torque 10 Nm ± 1 Oil O-rings and place ejector Danfoss 32F877.20 Mount the ejector with screws DKRCC.PI.VM0.A2.02 | 4