30GV/30GY 020-059 Air-Cooled Liquid Chillers 50 Hz Installation, Operation and Maintenance Instructions 1
CONTENTS Page Start-up checklist .......................................................................................................................................................................... 3 Dimensions and clearances .......................................................................................................................................................... 4 Physical and electrical data ..............................................................................................
START-UP CHECK LIST Equipment sold by: Contract No.: Installed by: Contract No.: Site address: Start-up date: Equipment type and serial numbers: Electrical data: Supply voltage: Ph. Nominal voltage: V Current draw: Ph. 1 V Ph. 2 V Ph. 3 V A Ph. 3 A % network voltage: A Ph.
Dimensions and clearances 30GV/30GY 020 36 36 1868 36 2103 800 915 A 600 800 950 B A-B: Clearance only required on one side 30GV/30GY 025-035 36 36 2028 36 3327 600 800 983 A 1800 800 950 B A-B: Clearance only required on one side 4
Dimensions and clearances, mm 36 36 2028 36 36 30GV/30GY 044-059 2000 1000 3327 1800 950 1000 1800 Alternative 1 Alternative 2 Floor mounting • • For unit mounting holes, weight distribution and centre of gravity coordinates, refer to the dimensional drawings supplied with the unit. These units are designed for indoor installation. CAUTION: • • Ensure the air flow around the unit is not obstructed. At least one side of the units must be free from obstructions, to ensure proper air flow.
Physical data 30GV/30GY 020 025 030 035 044*** 049*** 059*** Nominal cooling capacity 30GV* kW Nominal cooling capacity 30GY* kW 51 50 66 69 73 97 97 101 132 138 146 153 193 202 Operating weight kg 850.0 1030.0 1100.0 1250.0 2111.5 2255.0 2562.5 Refrigerant charge**** kg 9.8 14.5 15.2 17.0 29.0 29.0 34.0 1/2** 66/100 1/2** 66/100 1/1 3 33/66/100 1/1 3 33/66/100 1/1 3 33/66/100 31.0 43.0 62.0 62.0 86.
APPLICATION DATA INSTALLATION Minimum and maximum evaporator water flow rates 30GY/GV Min flow rate, l/s Max. flow rate, l/s 020 025 030 035 044 049 059 1.2 1.6 1.6 2.4 3.2 3.2 4.8 4.8 8.0 8.0 9.4 16.0 16.0 18.4 Installation, start-up and servicing this equipment can be hazardous due to system pressures, electrical components and equipment location (roofs, elevated structures, etc.). Only trained, qualified installers and service mechanics should install, start-up and service this equipment.
Preliminary checks Before installing and connecting the unit check: The required clearances for correct unit operation and maintenance. Size and location of the chilled water piping. Location and electrical characteristics of the available power supply which must agree with the unit nameplate rating. Location and correct installation of the ductwork.
Fan speed adjustment tables 30GV and 30GY 020 Air flow 6 r/s 7 r/s 8 r/s 9 r/s 10 r/s 11 r/s 12 r/s 13 r/s 14 r/s l/s ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW ESP kW 1900 2100 2300 2500 2700 2900 3100 3300 3500 3700 3900 4100 4300 4500 4700 4900 5100 5300 61 52 40 27 12 0 0.6 0.7 0.8 0.8 0.9 97 89 79 67 53 37 20 1 0.9 1.0 1.1 1.2 1.3 1.4 1.4 137 130 121 110 98 83 67 50 30 8 0 1.1 1.3 1.4 1.5 1.6 1.8 1.9 2.0 2.1 2.
Water connections Refer to the certified dimensional drawings for the sizes and positions of all water inlet and outlet connections. The water pipes must not transmit any radial or axial force to the heat exchangers or any vibration to the pipework or building. The water supply must be analysed and appropriate filtering, treatment, control devices, isolation and bleed valves and circuits built in, as necessary. Consult either a water treatment specialist or appropriate literature on the subject.
Water connections (30GY/GV 044-059) There are two alternatives: Water entering at the left of the duplex unit and leaving on the right. Water entering at the right of the duplex unit and leaving on the left. The water inlet must be on one evaporator, and the outlet on the other one, in order to correctly balance the flow rates in the evaporators. When installing and connecting the components ensure that there is no leak at any of the connections (see diagram below).
Power supply Start-up The power supply must conform to the specification on the chiller nameplate. The supply voltage must be within the range specified in the electrical data table. Preliminary checks Never be tempted to start the chiller without reading fully, and understanding, the operating instructions and without having carried out the following pre-start checks : For connections refer to the wiring diagram.
Actual start-up IMPORTANT: • Commissioning and start-up of the chiller must be supervised by a qualified refrigeration engineer. • Start-up and operating tests must be carried out with a thermal load applied and water circulating in the evaporator. • All set point adjustments and control tests must be carried out before the unit is started up. • Please refer to the controls manual for the unit. a. b. Start up the unit. Check that all safety devices are satisfied, paticularly the high pressure switches.
SERVICING REFRIGERATION COMPONENTS Any technician attending the machine for any purpose must be a fully qualified refrigeration engineer. WARNING: Before doing any work on the machine ensure that the power is switched and locked off and that all isolators are tagged. If a refrigerant circuit is opened, it must be evacuated, and recharged, after ensuring that the refrigerant is clean and free from impurities, the filter-drier has been changed and the unit has been tested for leaks.
Compressors Checking the oil charge Check the oil level and add or remove oil as necessary so that the level is 1/8 to 3/8 up each sight glass with the compressors running normally. WARNING: Never open or disconnect any switch or circuit breaker which will cut the supply to the heaters, unless the unit is to be shut down for lengthy service or repair or for a seasonal shut down. In all cases the heater must be energised for at least 24 hours before a compressor is restarted.
Four evaporator tubes are swaged into the end plate and cannot be removed. A dot punch mark in the end plate opposite each one identifies each of them. If any of them develop a leak, the tube must be plugged, as described below. Plugging evaporator tubes A leaking tube can be plugged pending replacement. The number of tubes plugged will determine when they should be replaced. Check with Carrier the effect upon chiller performance of plugging a number of tubes.
For normal maintenance routines we recommend using 1 kg of the concentrated product, diluted to 10%, to treat a coil surface of 2 m2. This process can either be carried out with a TOTALINE applicator gun (part No. PE01 WA 4000EE) or using a high-pressure spray gun. With pressurised cleaning methods care should be taken not to damage the coil fins. 5. 6. NOTE: Increasing the fan speed means increasing the load on the fan motor. Do not exceed the maximum value indicated in the Physical Data table.
TROUBLESHOOTING CHART Below we list a series of possible faults, along with the probable causes and suggested solutions. In the event of a unit malfunction, it is advisable to disconnect the power supply and ascertain the cause.
Order No. 13193-76, April 1996. Supersedes order No.: New Manufacturer reserves the right to change any product specifications without notice.
