Page 2 - CONTENTS; Page
2 CONTENTS Page Start-up checklist .......................................................................................................................................................................... 3 Dimensions/clearances .........................................................................
Page 3 - Safety device setting:; NOTE: Please fill in this sheet during the installation
3 START-UP CHECK LIST Start-up date: Equipment sold by: Contract No.: Installed by: Contract No.: Site address: Equipment type and serial numbers: 30GH/GZ Electrical data: Supply voltage: Ph. V Ph. 2 V Ph. 3 V Nominal voltage: V % network voltage: Current draw: Ph. 1 A Ph. 2 A Ph. 3 A Control circui...
Page 7 - Follow all safety codes.
7 APPLICATION DATA Minimum cooler water flow rates 30GH/GZ Min flow rate, l/s 040-045 3.6 050-060 4.0 085-095 6.0 100-120 8.5 130 9.8 145 12.1 150 9.8 160-245 12.1 Maximum chilled water flow rate The maximum chilled water flow is limited by the maximumpermitted pressure drop in the evaporator. It mu...
Page 8 - Check compressor mountings; Before the first start-up of the unit proceed as follows:; Preliminary checks; the surface is horizontal, flat and intact.; Cross section of anti-vibration mounting
8 Check compressor mountings Before the first start-up of the unit proceed as follows: All compressors are mounted on anti-vibration mountings. Forthe 30GH/GZ 040-060 units, please do not loosen the bolts orfixing screws. For 30GH/GZ 085-245 units The compressors are mounted on anti-vibration mounti...
Page 9 - Water connections; Note the water inlets and outlets of the heat exchangers.; Typical hydraulic circuit diagram
9 Water connections Refer to the certified dimensional drawings for the sizes andpositions of all water inlet and outlet connections. The waterpipes must not transmit any radial or axial force to the heatexchangers or any vibration to the pipework or building. The water supply must be analysed and a...
Page 10 - Please refer to the controls manual for the unit.
10 Power supply The power supply must conform to the specification on thechiller nameplate. The supply voltage must be within the rangespecified in the electrical data table. ATTENTION: Units 30GH/GZ 040-160 have only one powerconnection point.Units 30GH/GZ 170-245 have two power connection points. ...
Page 11 - Leaks must be repaired immediately; Recharging liquid refrigerant; After detection and repair the unit can be recharged.
11 SERVICING REFRIGERATION COMPONENTS Any technician attending the machine for any purpose must bea fully qualified refrigeration engineer. WARNING: Before doing any work on the machine ensure thatthe power is switched and locked off and that all isolators aretagged. If a refrigerant circuit is open...
Page 12 - Compressor motor protection
12 Discharge gas thermostat DGT(only for units with low temperature option)A sensor in each compressor discharge line opens to shut downthe compressor if the discharge gas temperature exceeds thepreset level. Cut out 146°C Cut in 113°C Crankcase heaterEach compressor is fitted with an electric resis...
Page 13 - Elliott tube plug
13 Evaporator maintenance Check 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 sign ofleakage. Multitube evaporatorsThe evaporator can be removed using the following pr...
Page 14 - Condenser coil; Clean the coil with the appropriate cleaning agents.; . This process can either be carried out with; Remove the grille with its support air duct assembly.; Refrigerant circuit; This setting should not be changed unless absolutely necessary.
14 Condenser coil We 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 proceed as follows:• Re...