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D-EIMHP01501-22_00EN

 

12/20 

 

13. 

OPERATOR’S REPONSIBILITIES 

It  is  essential  that  the  operator  is  appropriately  trained  and  becomes  familiar  with  the  system  before  operating  the  unit.  In 
addition  to  reading  this  manual,  the  operator  must  study  the  microprocessor  operating  manual  and  the  wiring  diagram  to 
understand start-up sequence, operation, shutdown sequence and operation of all the safety devices. 

During the unit initial start-up phase, a technician authorized by the manufacturer is available to answer any questions and 
to give instructions as to the correct operating procedures. 

The operator must keep a record of operating data for every 

R41

 installed unit. Another registration must also be kept for 

all the periodic maintenance and assistance activities. 

If the operator notes abnormal or unusual operating conditions, he is advised to consult the technical service authorized 
by the manufacturer. 

 

 

 

WARNING

 

If  the  unit  is  switched  off,  the  compressor  oil  heater  cannot  be  used.  Once  the  unit  is 

reconnected to the mains, leave the compressor oil heater charged for at least 6 hours before restarting 
the unit. 

Failure to observe this rule may cause damage to the compressors due to excessive accumulation of 
liquid inside them.

 

 

This unit represents a substantial investment and deserves the attention and care to keep this equipment in good working 
order. 

However, during operation and maintenance it is essential to observe the following instructions: 

 

Do not allow unauthorized and / or unqualified personnel to access the unit. 

 

It is forbidden to access the electrical components without having opened the unit main switch and switched off the 
power supply. 

 

It  is  forbidden  to  access  the  electrical  components  without  using  an  insulating  platform.  Do  not  access  the  electrical 
components if water and/or moisture are present. 

 

Verify that all operations on the refrigerant circuit and on the components under pressure are carried out exclusively by 
qualified personnel. 

 

The replacement of the compressors must be carried out exclusively by qualified personnel. 

 

Sharp edges and the surface of the condenser section could cause injury. Avoid direct contact and use adequate 
protection device. 

 

Do not introduce solid objects into the water pipes while the unit is connected to the system. 

 

It is absolutely forbidden to remove all protections of moving parts. 

In case of sudden stop of the unit, follow the instructions on the Control Panel Operating Manual which  is part of the on-
board documentation delivered to the end user. 

It is strongly recommended to perform installation and maintenance with other people. 

 

WARNING

 

Avoid installing the unit in areas that could be dangerous during maintenance operations, such 

as platforms without parapets or railings or areas not complying with the clearance requirements around the 
unit.

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Содержание EWWQ-KC

Страница 1: ...EWWQ014KCW1N EWWQ025KCW1N EWWQ033KCW1N EWWQ049KCW1N EWWQ064KCW1N REV 00 Date 01 2022 Supersedes Installation Operation and Maintenance Manual D EIMHP01501 22_00EN PACKAGED WATER COOLED WATER CHILLERS ...

Страница 2: ...lectric power supply 11 12 4 Interconnection cables 11 13 OPERATOR S REPONSIBILITIES 12 14 MAINTENANCE 13 14 1 Routine maintenance 13 15 SERVICE AND LIMITED WARRANTY 16 16 BEFORE STARTING 18 LIST OF TABLES Table 1 Technical specifications 1 4 Table 2 Electrical specifications 1 4 Table 3 Water quality specifications 9 Table 4 Water flow operation range 10 Table 5 Impedance Z 11 Table 6 R410A Press...

Страница 3: ...short circuit leaks fire or other damage to the equipment Be sure only to use accessories optional equipment and spare parts made by Daikin which are specifically designed for use with the equipment and have them installed by a professional If unsure of installation procedures or use always contact your Daikin dealer for advice and information The English text is the original instruction Other lan...

Страница 4: ...al describes the procedures for unpacking installing and connecting the EWWQ units This appliance is intended to be used by expert or trained users in shops in light industry and on farms or for commercial use by lay persons Sound pressure level is less than 70 dB A Table 1 Technical specifications 1 General EWWQ 014 025 033 Dimensions HxWxD mm 600x600x600 Machine Weight kg 120 170 175 Connections...

Страница 5: ...ikin On Site Standard features Glycol application for chilled water temperature down to 10 C Powered Contact General alarm Voltage free digital contacts general operation Reversing Valve Evaporator Water pump Condenser Water pump Backup heater Changeable remote inputs remote start stop remote cooling heating dual setpoint External Alarm Setpoint reset 1 Refer to the operation manual Wiring diagram...

Страница 6: ...TION RANGE Figure 1 Operating limits on EWWQ014 033 Figure 2 Operating limits EWWQ049 064 ELWT Evaporator leaving water temperature CLWT Condenser leaving water temperature 1 Operation with water 2 Operation with glycol below ELWT 4 C ...

Страница 7: ...danger of fire due to leakage of non flammable gas 4 Select the location of the unit in such a way that the sound generated by the unit does not disturb anyone 5 Ensure that water cannot cause any damage to the location in case it drips out of the unit The equipment is not intended for use in a potentially explosive atmosphere 5 INSPECTING AND HANDLING THE UNIT At delivery the unit should be check...

Страница 8: ...directly into the heat exchanger 2 Drain taps must be provided at all low points of the system to permit complete drainage of the circuit during maintenance or in case of shut down 3 Anti vibration systems in all water piping connected to the chiller are recommended to avoid straining the piping and transmitting vibration and noise Additional water piping delivered with the unit All additional wat...

Страница 9: ...unit so that normal servicing of the water filter can be accomplished without draining the complete system 3 Air purge valves must be provided at all high points of the system The vents should be located at points which are easily accessible for servicing 4 The water filter must be installed in front of the unit for removing dirt from the water to prevent damage to the unit or malfunctioning of th...

Страница 10: ... in the water circuit to make sure that the water pressure will never exceed the maximum allowable working pressure 11 PIPING INSULATION The complete water circuit inclusive all piping must be insulated to prevent condensation and reduction of the cooling capacity 11 1 Antifreeze protection for BPHE and recovery exchangers If the heat exchangers are completely empty and cleaned with antifreeze sol...

Страница 11: ...er power supply 1 Install cable gland to proper tight main power supply cable 2 Using the appropriate cable connect the power circuit to the N L1 L2 and L3 terminals of the unit cable section 2 5 16mm2 3 Connect the earth conductor yellow green to the earthing terminal PE 12 3 Point for attention regarding quality of the public electric power supply This equipment complies with EN IEC 61000 3 11 p...

Страница 12: ...are to keep this equipment in good working order However during operation and maintenance it is essential to observe the following instructions Do not allow unauthorized and or unqualified personnel to access the unit It is forbidden to access the electrical components without having opened the unit main switch and switched off the power supply It is forbidden to access the electrical components w...

Страница 13: ... are process cooling data centres etc Highly Aggressive Environments can be defined as follows Industrial environment with possible concentration of fumes result of combustion and chemical process Coastal environment Highly polluted urban environment Rural environment close to of animal excrement and fertilizers and high concentration of exhaust gas from diesel gener ators Desert areas with risk o...

Страница 14: ...especially for water exchangers pay attention if water rich in calcium carbonate is used An increase in pressure drops or a decrease in thermal efficiency means that the heat exchangers are clogged In environments with a high concentration of airborne particles it might be necessary to clean the condenser bank more often 6 Units placed or stored in a Highly Aggressive Environment for long time wit...

Страница 15: ... time without operation are still subject to those routine maintenance steps Monthly Yearly Seasonal List of Activities Note 8 Weekly Note 1 Note 2 General Reading of operating data Note 3 X Visual inspection of unit for any damage and or loosening X Verification of thermal insulation integrity X Cleaning X Paint where necessary X Analysis of water 4 X Check of flow switch operation X Electrical I...

Страница 16: ...ropriate manner beyond its operating limits or not performing proper maintenance according to this manual can void the warranty Observe the following points to conform to warranty limits 1 The unit cannot function beyond the specified limits 2 The electrical power supply must be within the voltage limits and without voltage harmonics or sudden changes 3 The three phase power supply must not have a...

Страница 17: ...OPTIONAL 9 ACCUMULATOR 10 DISCHARGE STOP VALVE 11 SIGHT GLASS 12 LIQUID SOLENOID VALVE 13 LIQUID STOP VALVE POS COMPONENT CONNECTION D1 COMPRESSOR CONDENSER L1 1 L2 1 CONDENSER THERM EXP VALVE L1 2 L2 2 THERM EXP VALVE EVAPORATOR S1 EVAPORATOR COMPRESSOR S1 1 EVAPORATOR ACCUMULATOR S1 2 ACCUMULATOR COMPRESSOR W1 W3 WATER INLET ASSEMBLY OPTIONAL W2 W4 WATER OUTLET ASSEMBLY OPTIONAL E1 E2 EQUALIZER ...

Страница 18: ...that it can be switched on or off independently of the electrical supply to other items of the plant and equipment in general Refer to the wiring diagram terminals N L1 L2 L3 and PE 4 Supply water to the evaporator and condenser and verify if waterflow is within the limits as given in the table under Water charge flow and quality 5 The piping must be completely purged See also chapter Checking the...

Страница 19: ...D EIMHP01501 22_00EN 19 20 NOTES ...

Страница 20: ...se of its content and the products and services presented therein Specification are subject to change without prior notice Refer to the data communicated at the time of the order Daikin Applied Europe S p A explicitly rejects any liability for any direct or indirect damage in the broadest sense arising from or related to the use and or interpretation of this publication All content is copyrighted ...

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