background image

 

 

D-EIMHP01601-22_00EN  17/25 

 

12 

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  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. 

 

 

 
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. 

 

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. 

 

 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Summary of Contents for EWLQ014KCW1N

Page 1: ...LQ014KCW1N EWLQ025KCW1N EWLQ033KCW1N EWLQ049KCW1N EWLQ064KCW1N REV 00 Date 01 2022 Supersedes Installation Operation and Maintenance Manual D EIMHP01601 22_00EN CONDENSERLESS WATER COOLED WATER CHILLE...

Page 2: ...ES 17 13 MAINTENANCE 18 13 1 Routine maintenance 18 13 2 Electrical Installation 19 13 3 Service and limited warranty 19 14 BEFORE STARTING 22 List of tables Table 1 Technical specifications 1 4 Table...

Page 3: ...result in electric shock 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...

Page 4: ...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 Model EWLQ 014 025 033 Dimensions HxWxD mm 600x6...

Page 5: ...ater temperature kit Master slave water temperature kit Modem for Daikin On Site 1 2 Features Glycol application for chilled water temperature down to 10 C Voltage free contacts general operation alar...

Page 6: ...25 2 OPERATION RANGE Figure 1 Operation range EWLQ014 033KC Figure 2 EWLQ049 064KC ELWT Evaporator leaving water temperature Tc Saturated condensing temperature 1 Operation with water 2 Operation with...

Page 7: ...t disturb anyone 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 4 MAIN COMPONENT...

Page 8: ...ve the four screws fixing the unit to the pallet 4 Level the unit in both directions 5 Use four anchor bolts with M8 thread to fix the unit in concrete 6 Remove the service front plate 7 IMPORTANT INF...

Page 9: ...e solder connections 9 CONNECTING THE REFRIGERANT CIRCUIT WARNING The units are equipped with a refrigerant outlet discharge side and a refrigerant inlet liquid side for the connection to a remote con...

Page 10: ...not working Use a vacuum pump which can evacuate to 100 7 kPa 5 Torr 755 mm Hg Be sure to use both a spanner and torque wrench together when connecting or disconnecting pipes to from the unit Figure 4...

Page 11: ...mum height 30 m WARNING Make sure the pipes are filled with N2 during welding in order to protect the pipes against soot There should be no blockage stop valve solenoid valve between the remote conden...

Page 12: ...or must operate If the liquid line sight glass is showing seal after the rough charging due to possible different conditions add 10 refrigerant charge weight If the liquid line sight glass is showing...

Page 13: ...changer 2 Drain traps 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 pipin...

Page 14: ...ter filter must be installed in front of the unit for removing dirt from the water to prevent damage to the unit or malfunctioning of the evaporator 5 The water filter must be cleaned on a regular bas...

Page 15: ...vent burning injuries by accidental touching the hot max 135 C discharge pipe it must be insulated thoroughly A minimum of insulation to protect the liquid pipe from damage is advisable 10 5 Antifreez...

Page 16: ...n 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 earth...

Page 17: ...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 a...

Page 18: ...es and functionality There are two different levels of maintenance which can be chosen according to the type of application critical noncritical or to the installation environment highly aggressive Ex...

Page 19: ...t 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 ha...

Page 20: ...ans 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 12 Units placed or stored in a Hig...

Page 21: ...atic expansion valve S1 Evaporator Compressor 5 Evaporator BPHE S1 1 Evaporator Accumulator 6 Ball valve optional S1 2 Accumulator Compressor 7 Air purge valve optional W1 W3 Water inlet assembly opti...

Page 22: ...the table under Water charge flow and quality 5 The piping must be completely purged See also chapter Checking the water circuit 6 Connect the flow switch and pump contacts so that the unit can only...

Page 23: ...D EIMHP01601 22_00EN 23 25 NOTES...

Page 24: ...D EIMHP01601 22_00EN 24 25...

Page 25: ...efer to the data communicated at the time of the order All the data and specifications contained herein are liable to change without notice Refer to the data communicated at the time of the order Daik...

Reviews: