Carrier Aquaforce 30XA302 Installation, Operation And Maintenance Instructions

Also see for Aquaforce 30XA Series: Installation instructions Operation instructions User guide

Contents

5013.4 - Tightening torques for the main electricalconnections13.4.1 - Tightening torques for the main electrical connectionsComponent Designationin the unitValue(N·m)Screw on bus bar, customer connectionM8 - 18M10 L1/L2/L3 30Soldered screw PE, customer connection (M12) PE 70Tunnel terminal screw, compressor contactorContactor 3RT103_Contactor 3RT104_ 5Contactor 3RT105_ 11Contactor 3RT106_ KM_ 21Nut on compressor contactor deckM8 for contactors 3RT105_ 18M10 for contactors 3RT10_7 KM_ 30Tunnel terminal screw, current transformerSize 2 (3RB2956_) 11Size 3 (3RB2966_) TI_ 21Nut on current transformer deckM8 18M10 TI_ 30Compressor earth terminal in the power wiring control boxTerminal M8 Gnd 30Compressor phase connection terminalsM12 25M16 EC_ 30Compressor earth connection Gnd on EC_ 25Tunnel terminal screw, disconnects 3RV1011_ QF_/QM_ 1Tunnel terminal screw, hydronic pump contactorContactor 3RT101_ KM90_ 1Contactor 3RT102_ 2.2ATTENTION: The tightening of the connections at thecompressor terminals requires special precautions. Pleaserefer to the chapter below.13.4.2 - Connection precautions for the compressor powerterminalsThese precautions must be applied during an interventionthat requires the removal of the power conductors connectedto the compressor supply terminals.The tightening nut of terminal (6) supporting the isolator (7)must never be loosened, as ist ensures terminal tightnessand compressor leak tightness.The tightening of phase lug (4) must apply the torque betweencounter nut (5) and tightening nut (3): During this operationa counter-torque must be applied at counter nut (5). Counter-nut (5) must not be in contact with the tightening nut ofterminal (6).1. Torque application to tighten the lug2. Avoid contact between the two nuts3. Lug tightening nut4. Flat lug5. Counter-nut6. Terminal tightening nut7. Isolator13.5 - Tightening torques for the main bolts and screwsScrew type Used for Value(N·m)Metal screw D = 4.8 Condensing module, housing supports 4.2Screw H M8 Condensing module, compressor fixing 18Taptite screw M10 Condensing module, chassis - structure fixing, controlbox fixings, compressor fixings, oil separator fixing30Taptite screw M6 Piping support, cowling 7Screw H M8 Piping clip 12Screw H M6 Piping clip 10Nut H M10 Compressor chassis 30Nut H M10 Hydronic pump chassis 30Screw H M8 Filter drier cover 35Screw H M12 Economiser port flange 40Screw H M16 Oil separator flanges, suction flanges 110Screw H M16 Heat exchanger water boxes 190Screw H M20 Suction flanges 190Nut 5/8 ORFS Oil line 65Nut 3/8 ORFS Oil line 26Nut H M12/M16 Victaulic collars on suction piping 60/130Self-locking Nut M16 Compressor fixing 30ATTENTION: The tightening of the connections at thecompressor terminals requires special precautions. Pleaserefer to the chapter below.13.6 - Condenser coilWe recommend, that coils are inspected regularly to checkthe degree of fouling. This depends on the environmentwhere the unit is installed, and will be worse in urban andindustrial installations and near trees that shed their leaves.For coil cleaning, two maintenance levels are used, basedon the AFNOR X60-010 standard:13.6.1 - Level 113.6.1.1 - Recommendations for maintenance and cleaningof round tube plate fin (RTPF) condenser coils• Regular cleaning of the coil surface is essential forcorrect unit operation. Eliminating contamination andremoval of harmful residue will increase the operatinglife of the coils and the unit.• The maintenance and cleaning procedures below arepart of the regular maintenance and will prolong thelife of the coils.