Trane CGA Series Installation Operation & Maintenance Download Page 7 | Manualshive

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Trane CGA Series Installation Operation & Maintenance Download Page 7

• always use original spare parts bought directly from Trane or from official dealers of the companies reported in the list of
recommended spare parts
• if the unit is to be moved after a year of being in the site or if it has to be dismantled contact Trane

Manual alarm reset

If there is an alarm the unit must not be manually reset before having located and eliminated the cause of the fault.
Repeated manual resets may cause the guarantee to be void

Operating range

The operating ranges are indicated on the plate placed on the unit

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Summary of Contents for CGA Series

Page 1: ...Scroll chillers and heat pumps Models CGA CXA May 2015 CG SVX031A GB Original instructions Installation Operation Maintenance ...

Page 2: ...Overview 3 Reference and certifications 4 Installation 8 Electrical connections 9 Hydraulic diagrams 12 Tank mounting instructions 14 Start up procedures 17 Start up 20 Maintenance 23 Recommended spare parts 23 ...

Page 3: ... F The warranty is subject to regular maintenance of the unit which is appropriately indicated in the unit log book locat ed inside the electrical panel G Warranty automatically ends in case of payments not fulfilled non performance of the contract and even if the units show tampering without TRANE written approvals Receiving the unit On receiving the unit it is up to the customer to check that th...

Page 4: ... with the indications in this manual and with the national regulations in force Operator A person authorised by the owner to carry out all the operations of regulation and control on the Trane unit which are specifically mentioned in this manual He or she should keep to actions described in the manual and limit his or her action to what is explicitly allowed Technician A person who is directly aut...

Page 5: ...se with fresh water the contaminated parts of the skin The refrigerant in liquid stage in contact with wet clothes causes freezing and adherence to the skin In this case it is neces sary to take off the contaminated clothes to avoid freezing Contact a doctor in case of irritation of the contaminated parts Risks for contact with the eyes Vapors don t take any effect Splashes or sprinklers can cause...

Page 6: ...d the possible spillage of refrigerating fluid outside eliminate any fluid loss inside or outside the unit collect the discharge liquid and clean up any possible oil leakage periodically clean the compressor casing of the accumulated dirt deposits do not keep inflammable liquids near the unit do not dispose of the refrigerant fluid and the lubricating oil in the environment welding should only be ...

Page 7: ...to be moved after a year of being in the site or if it has to be dismantled contact Trane Manual alarm reset If there is an alarm the unit must not be manually reset before having located and eliminated the cause of the fault Repeated manual resets may cause the guarantee to be void Operating range The operating ranges are indicated on the plate placed on the unit ...

Page 8: ...nt vibration bolts Precautions for dominant winds Avoid obstacles on suction and discharge sides of the units Respect the safety distances as shown on the units dimensional drawings In case of presence of dominant winds in the installation area it is strictly necessary to avoid for units with horizontal flow fans that such winds blow in front of the unit fans discharge side In case of unit with ve...

Page 9: ...resents frequency components higher than the mains frequency These components are called harmonics in case of power supply at 50 Hz is called the fundamental harmonic component at 50 Hz the second harmonic is the component to 100 Hz the third harmonic is the component at 150 Hz and so on in the case of power 60Hz to the fundamental component is at 60Hz the second har monic is 120Hz 180Hz in the th...

Page 10: ...essure gauges of adequate scale in and out of the unit 2 Two shock absorbing joints inlet and out of the unit 3 One shut off valve normal one inlet 4 One setting valve in outlet 5 Two thermometers inlet and outlet 6 One circulation pump 7 One safety valve on the water buffer if not equipped in the unit 8 One automatic air vent valve if not equipped in the unit 9 One expansion vessel if not equippe...

Page 11: ...nd the utility Automatic filling unit Assures the water pressure in the plant is maintained at least 1 5 bar automatically resetting it when necessary Safety valve Takes care of opening the unit in atmosphere if the pressure exceeds the calibration value Expansion tank if not equipped in the unit and one in addition depending on the volume of water in the plant Takes care of compensating small wat...

Page 12: ...Hydraulic diagrams ...

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Page 15: ...lifting phase positioning the drain path pipes as shown in figure below C Position the unit in the group with water tank lining up the holes of the upper bracket of the tank with the drilling of the underside of the foot making sure to route the drain path pipes inside the holes on the base of the hydronic kit ...

Page 16: ...D Carry out by coupling bolts E Connect the inlet of the water tank with the outlet of the unit ...

Page 17: ...Valid only for size CGA CXA 040 D Mounting the two inspection panels of the water tank Valid only for size CGA CXA 040 Valid for sizes from CGA CXA 060 115 ...

Page 18: ...tion on the temperature difference between the water in and the water out The regulation is calibrated in the factory for water in to the evaporator at 12 C and water out at 7 C With the general switch open check that the electrical connections are tightly clamped Check for any possible refrigerant leaks Check that the electrical data on the label correspond to those of the mains supply Check that...

Page 19: ...clared values with unit steadily running on a full charge measure the temperature of the suction line downstream of the thermostatic valve bulb read the balance pressure to the evaporator on the low pressure manometer and the corresponding saturation temperature Overheating is equal to the difference between the temperatures measured in this way Then measure the temperature of the liquid line comi...

Page 20: ...Charge in vapour phase ...

Page 21: ...keep all the machine components in good condition and to optimise their use during the warm up it is necessary to bring the circuit to the right temperature before releasing cooling energy to the utilities The following steps must be followed for this to be carried out start up the machine wait for the water in temperature to reach the running temperature start up the consumers Follow the above me...

Page 22: ...e hydraulic circuit water filling monthly Control of electric absorption fan motors and compressor monthly Control of power supply and auxiliary power monthly Control of refrigerant charge through liquid sight glass if available monthly Control of the state of the carter electric heaters monthly Carrying out tightening of all the electrical connections monthly Coil cleaning monthly Control of the ...

Page 23: ...pare parts Following is a list of the recommended parts for several years of operation Trane is at your disposal to recommend a personalised list of accessories according to the commissioned order including the part number of the equipment 1 year Components Quantity fuses all filter dryers all solenoid valves 1 per type thermostatic valves 1 per type pressostats 1 per type pressure gauges 1 per ty...

Page 24: ...ficient environments Trane offers a broad portfolio of ad vanced controls and HVAC systems comprehensive building services and parts For more information visit www Trane com Trane has a policy of continuous product and product data improvement and reserves the right to change design and specifications without notice 2015 Trane All rights reserved CG SVX031A GB May 2015 ...

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