Carrier 30RQ 039 Series Installation, Operation And Maintenance Instructions

Contents

4520.4 - Tightening torques for the main electricalconnectionsComponent/screw type Designation inthe unitvalue (N·m)Soldered screw (pE) customer connectionM8 PE 14.5Screw on switch inlet zonesSwitch - MG 28908 QS_ 8Switch - MG 28910 8Switch - MG 28912 8Switch - MG 31102 15Tunnel terminal screw, compressor contactorContactor LC1D12B7 KM* 1.7Contactor LC1D18B7 1.7Contactor LC1D25B7 2.5Tunnel terminal screw, compressor circuit breakerCircuit breaker 25507 QM* 3.6Circuit breaker 25508Circuit breaker 25509Tunnel terminal screw, control power transformerTransformer - 40958E TC 0.6Transformer - 40959ETransformer - 40888ETransformer - 40894ECompressor earth terminal in the power wiring control boxM6 Gnd 5.5Compressor earth connectionM8 Gnd 2.83Tunnel terminal screw, disconnect switch (fan, pump)Disconnect switch GV2ME08 QM_ 1.7Disconnect switch GV2ME10Disconnect switch GV2ME14Tunnel terminal screw, contactor (fan, pump)Contactor LC1K0610B7 KM 0.8 to 1.3Contactor LC1K09004B7Contactor LC1K0910B7Contactor LC1K0901B720.5 - Tightening torques for the main bolts and screwsScrew type Used for Torque (N·m)Compressor strut Compressor support 30M8 nut BPHE* fixing 15M10 nut Compressor mounting 30M16 nut Compressor fixing 30Oil nut Oil equalisation line 75Taptite screw M6 Fan support, storage tank fixing 7Taptite screw M8 Fan motor fixing 13Taptite screw M10 Four-way valve fixing 30H M8 screw Fan scroll fixing 18Metal screw Sheet metal plates 4.2H M6 screw Stauff clamps 10Earth screw Compressor 2.8* BPHE = Brazed plate heat exchanger20.6 - air heat exchangerWe recommend, that finned coils are inspected regularly tocheck the 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:• If the air heat exchangers are fouled, clean them gentlyin a vertical direction, using a brush.• Only work on air heat exchangers with the fans switchedoff.• For this type of operation switch off the HVAC unit ifservice considerations allow this.• Clean air heat exchangers guarantee optimal operationof your HVAC unit. This cleaning is necessary when theair heat exchangers begin to become fouled. Thefrequency of cleaning depends on the season andlocation of the HVAC unit (ventilated, wooded, dustyarea, etc.).WArNINg: Never use pressurised water without a largediffuser. Do not use high-pressure cleaners for Cu/Cu andCu/Al coils.Concentrated and/or rotating water jets are strictlyforbidden. Never use a fluid with a temperature above45°C to clean the air heat exchangers.Correct and frequent cleaning (approximately every threemonths) will prevent 2/3 of the corrosion problems.Protect the control box during cleaning operations.20.7 - Water heat exchanger maintenanceCheck that:• the insulating foam is intact and securely in place.• the cooler heaters are operating, secure and correctlypositioned.• the water-side connections are clean and show no signof leakage.