Outdoor monoblock chillers air condensed equipped with screw compressors and axial fans (80 pages)
Summary of Contents for Emicon RAC Series
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R A C AIR COOLED WATER CHILLERS WITH TURBOCOR COMPRESSORS (OIL FREE) USE AND MAINTENANCE MANUAL...
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RAC – Use and Maintenance Manual ev. 4 10/18) Emicon A.C. S.p.A. reserves the right to modify at any time this manual without any prior notice. EMICON A.C. S.P.A. Pag. 2 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Max design temperature Design pressure Min. design temperature Max. deign temperature Setting of safety device Pag. 10 EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
On the first start-up, it is necessary duly fill in the relevant report attached to this manual and send a copy to Emicon A.C. (Customer Service), in order to make the warranty valid. 1.6.
Service personnel must use a commercially available service kit for handling static-sensitive devices. The kit typically includes: Ground cord Assembly • Alligator clip • Grounding wrist strap • EMICON A.C. S.P.A. Pag. 12 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
In particular, be careful with the CE type covers because they are coated on the outside for the purpose of being conductive. The painted covers only apply to TT300P and TT300C. 3) Remove the Mains Input cover. See Figure 1. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 13 tel.
All parts that are susceptible to damage by Electrostatic Discharge (ESD) will be marked using the following label. Please follow the instructions below to ensure safety and to protect the parts from ESD damage. EMICON A.C. S.P.A. Pag. 14 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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4) If you only need to remove the Service Side cover, clip the ESD strap ground to the cover screw hole that is part of the compressor housing. See yellow arrows in Figure 3. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
In particular, the unit’s refrigerating capacity may be lower and its current draw may be higher than specified. However, operating limits must be abided by during unit operation, as indicated in table 1.1. EMICON A.C. S.P.A. Pag. 16 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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It is forbidden to exceed the limits set out in this paragraph while the unit is in operation without the manufacturer’s prior explicit authorisation. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 17 tel.
• agreed upon by contract. Please contact the manufacturer for clarifications on the use of the cooler EMICON A.C. S.P.A. Pag. 18 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
In the next paragraph will show the main characteristic components. The figure 2.1 shows the main parts of the unit. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 19 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
The motor is compatible with high-speed variable-frequency operation that affords high-speed efficiency, compactness and soft start capability. Compressors is designed for use with HFC-134a. Pag. 20 EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
When the superheat gas temperatures are too low, they suggest to adjust the liquid flow by the Electronic Expansion Valve. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
• High and low pressure guages, • high and low pressure switches, • evaporator temperature probes (inlet and outlet). EMICON A.C. S.P.A. Pag. 22 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
The use of wrong values of nominal voltage and / or frequency outside the permitted range can cause malfunctions and / or faults and implies the expiry of the warranty terms offered by Emicon AC. In particular, this applies in any case where is used a nominal voltage of 400 V AC with 380 V AC power supplies.
The soft-start function and the variable-speed drive combined, limit the inrush current at start-up. Figure 2.2: Compressor component identification EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 25 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Inverter sends current, temperature, error, and DC bus voltage information to the BMCC via the Backplane. With the input gating signals, the IGBT Inverter controls the motor at a variable frequency of 0-750Hz. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
Economizer: to increase the chiller Energy efficiency, growing the liquid sub-cooling in the thermal expansion valve inlet, tank to a refrigerant quantity took immediately after the filter and put in the 2 compressor stage inlet. EMICON A.C. S.P.A. Pag. 30 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
The evaporator is insulated externally with thermal insulation and anti condensation cladding, which has 19 mm thick instead 9 mm on the standard model. RAC series are available in various versions with different pressure sound. 2.9. Refrigerant The unit is designed to work with gas R134A. It contains no chlorine and it is considered ozone-safe and environment friendly.
The weight of some models could be unbalanced, it’s necessary check the unit stability before starting to handle it. For any unit handling, please follow the instructions shown in figure 3.1 , considering it as indicative. EMICON A.C. S.P.A. Pag. 32 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Manufacturer, in order to develop of common agreements on necessary measures. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
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Figure 3.2: Service area It is recommended to verify the congruence between the tecnical data of the Manual’s unit and the project data. EMICON A.C. S.P.A. Pag. 34 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
Washing the hydraulic circuit once the pipes are placed by appropriate substances. So avoiding dirt • and solid particles remain in the tubes and to cause any damage. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 35 tel.
To use aggressive anti-freeze mixtures or not compatible with copper, carbon steel, aluminum and other materials which are used in its construction, it is forbidden. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 37 tel.
The electrical system of the unit must to be projected by qualified draftsman and only expert electrical technicians appointed by the Client(Unit’s Owner) are allowed to perfom the electrical connections and in conformity with local regulations. EMICON A.C. S.P.A. Pag. 38 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
The power cable conductors must be connected to the free terminals upstream the main disconnecting switch, while the grounding conductor must be connected to the appropriate terminal PE or to the ground bar. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 39 tel.
When connecting the unit to the power supply, it is necessary to check that the phases are connected in the correct sequence. On this purpose, make sure that all electric motors rotation is right. EMICON A.C. S.P.A. Pag. 40 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
In any case, any pipes on the safety valves discharge must be manufactured according to laws and regulations in force. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 41 tel.
Initial survey Before starting-up, the unit must undergo a visual inspection by a technician with suitable expertise, including the following checks: EMICON A.C. S.P.A. Pag. 42 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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• the value of adjustment temperature and of the anti-freeze warning on the microprocessor must be set correctly. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 43 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
If the machine is expected to stay in this mode for more than 24 hours, the master switch must be turned to the OFF position in order to cut the power supply. EMICON A.C. S.P.A. Pag. 44 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Manufacturer. Inputting incorrect values may allow unit operation in out-of-specification conditions and, consequently, damage the machine and the whole system. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 45 tel.
Inside the unit there can be areas with high voltage. Works requiring access to such areas may be carried out only by qualified and trained personnel, authorised as provided by local laws and regulations in force. EMICON A.C. S.P.A. Pag. 46 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Servicing during the unit’s operating lifetime and, in particular, scheduled leak detection, on-site inspections and check-ups of safety equipment, must be carried out as provided by local laws and regulations in force. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
) For units installed on the European Union’s territory, leakage management must be carried out according to indications laid out in the (CE) Regulation 1516/2007. EMICON A.C. S.P.A. Pag. 48 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
The required personal protective equipment must be used at all times when working on the unit. In particular, it is necessary to at least wear protective spectacles, gloves, safety helmet and shoes. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
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Check functioning of the coolant level sensor in the evaporator Check calibration of the coolant level sensor in the evaporator EMICON A.C. S.P.A. Pag. 50 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Clean finned coils Check noise and vibration level of the fans Check the supply voltage of the fans EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 51 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Carry out leak detection on the cooling line Check calibration and functioning of the safety high pressure switch EMICON A.C. S.P.A. Pag. 52 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
If the installation environment does not allow to preserve operating conditions similar to the nominal ones during a suitable period of time, contact the manufacturer to identify which procedures must be carried out. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 53 tel.
Checking the guide it is also possible to see whether the level of coolant in the circuit is suitable or not. As a EMICON A.C. S.P.A. Pag. 54 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
The liquid coolant subcooling is the difference between the saturation temperature (bubble point in zeotropic blends, that is to say blends characterized by temperature glide) which conforms to the condensing pressure EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
Table 5.3 indicates the most common types of device crashes that can occur, as well as the most probable causes and possible solutions according to each type. EMICON A.C. S.P.A. Pag. 56 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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3. The cooled water correct temperature is lower See trouble 2.d The microprocessor does not work EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 57 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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If all these controls give a positive result. EMICON A.C. S.P.A. Pag. 58 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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If all these controls give a positive result. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 59 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Recharge the cooling system The operations described must to be to carried out from qualified and trained personnel EMICON A.C. S.P.A. Pag. 60 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Check electric connections thermostatic expansion valve operation EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 61 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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Change the probe parameter in the The probe corresponding to the microprocessor; otherwise replace the alarm code is defective probe. EMICON A.C. S.P.A. Pag. 62 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
When needed, comply with the national law and regulation on the transport of coolant fluid. Do not modify the unit or replace its components without the manufacturer's explicit approval. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
It is advisable to make sure it can work up to a pressure equal to 0.3 bar absolute. After performing maintenance on the refrigeration circuit, carry out the following activities: EMICON A.C. S.P.A. Pag. 64 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Do not use the compressor to create the vacuum. Do not use a megaohmeter to check the engine or feed the compressor when the vacuum has been created. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 65 tel.
Do not use a different coolant than the one indicated on the Data Plate. Use only new or recycled coolants with known composition and suitable features for use in refrigeration EMICON A.C. S.P.A. Pag. 66 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
Clearly indicate the coolant quality (new, recycled, reused) on the containers to avoid mixing different kinds of fluid. Do not connect coolant containers to one another using a collector. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 67 tel.
Record on the Register the quantity and type of coolant employed. Verify the unit tightness within one month from the leak repair to make sure the intervention was successful. EMICON A.C. S.P.A. Pag. 68 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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RAC – Use and Maintenance Manual ev. 4 10/18) EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 69 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
After draining the coolant, reduce the machine to single components. Dispose of them according to their features in accordance with existing local law and regulation. EMICON A.C. S.P.A. Pag. 70 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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RAC – Use and Maintenance Manual ev. 4 10/18) EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 71 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
At that point, the state is changed into the operational state. Operational State: EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 73 tel.
The shutdown state therefore switches into the idle stage when this compressor reaches full stop. Individual compressor states 7.2.2. Absent State: EMICON A.C. S.P.A. Pag. 74 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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(ie. when it has reached its operational state). Fault State: EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 75 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
7.4.2. Pressing the key when the unit is ON, you go to the menu described in the following table. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 77 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
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Display input and output values Alarms Access to alarm menu Active Alarms List of the active alarms Alarm Log EMICON A.C. S.P.A. Pag. 78 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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The screen shows some data on specific compressors. If you press the or buttons, the screen changes to display additional data for that compressor. If you press LEFT or RIGHT, the screen switches to the next/previous compressor. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 79 tel.
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Input and output display 7.4.2.4. Menu I/O – Input/Output Sub-menu: IOd – I/O Display LCD display EMICON A.C. S.P.A. Pag. 80 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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• time since its activation in the format hours:minutes:seconds (seconds for LCD display • only). EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 81 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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EMICON A.C. S.P.A. Pag. 82 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail...
Access to menus Alarms Admission to the list of active alarms Menu Backward scroll of menu EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 83 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
Warning Code Alarm description type period delay (s) delay (s) unit OFF relay relay (min) EMICON A.C. S.P.A. Pag. 86 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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Warning Code Alarm description automatic type delay (s) delay (s) unit OFF relay relay period EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag. 87 tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
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General AI alarm 5 Semi Code Alarm description Reset Startup Steady Activi with Alarm Warning automatic EMICON A.C. S.P.A. Pag. 88 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel. (+39) 0543/495611 – fax. (+39) 0543/495612 – e-mail emicon@emiconac.it...
Code: acronym to identify the parameter. It clearly identifies the parameter and it is showed on the display. Description: parameter description to display on a LCD display. EMICON A.C. S.P.A. via A. Volta, 49 – 47014 Meldola (FC) – Italy pag.
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Text Values: list of mnemonic values that parameters can assume. The entering to the parameters visualization and modification mode is possible from menu. For a complete user interface description, please (see “7.4 User Interface”). EMICON A.C. S.P.A. Pag. 94 via A. Volta, 49 – 47014 Meldola (FC) – Italy tel.
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