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EWWD120~540MBYNN

Packaged water-cooled water chillers

4PW22685-1

Operation manual

12

Timers menu

Safeties menu

The "safeties" menu provides useful information for trouble shooting
purposes. The following screens contain basic information.

Along with the basic information, more detailed information screens
can be consulted while the safety menu is active. Press the 

q

  key.

Screens "similar" to the following will appear.

History menu

The "history" menu contains all the information concerning the latest
shutdowns. The structure of those menus is identical to the structure
of the safeties menu. Whenever a failure is solved and the operator
performs a reset, the concerning data from the safeties menu is
copied into the history menu.

Additionally the number of safeties that already occured, can be
consulted on the first line of the history screens.

Info menu

Input/output menu 

The "input/output" menu gives the status of all the digital inputs and
the relay outputs of the unit.

To  check the actual value of the
general software timers.

To  check the actual value of the
compressor timer. (first screen)

To  check the actual value of the
compressor timers. 

(second screen)

To  check the actual value of the
compressor startup timers and the
stop timers.

To  consult information about the unit
safety which caused the shutdown.

To  consult information about the
circuit 

1 safety which caused the

shutdown.

To  consult information about the
circuit 

2 safety which caused the

shutdown.

To  consult information about the
network safety which caused the
shutdown.

To consult information about the dual
pump wich caused the shutdown.

To  check the time and control mode
at the moment of the unit shutdown.

To  check which were the evaporator
and condenser inlet water tem-
perature and the evaporator outlet
water temperature.

To  check which was the evaporator
outlet water temperature of the circuit
at the moment of shutdown.

To check which was the status of the
compressors at the moment of
shutdown.

To  check which were the pressures of
circuit 1 at the moment of shutdown.

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To  check which were the pressures of
circuit 2 at the moment of shutdown.

To check which were the total amount of
running hours of the compressors and
the ambient temperature at the moment
of shutdown.

To consult time and date information.

To  consult additional information
about the unit such as the unit type
and the refrigerant used.

To  consult information about the
controller's software version.

To  consult information about the
PCB.

To check whether or not the emergency
stop device is active and if there's any
water flow to the evaporator.

To check the status of the high pressure
switch, the reverse phase protector and
overcurrent relay for circuit 1.

To  check whether or not the discharge
thermal protector or the compressor
thermal protector are activated for
circuit 1.

To check the status of the high pressure
switch, the reverse phase protector and
the overcurrent relay for circuit 2 (only
for EWWD360~540).

To  check whether or not the discharge
thermal protector or the compressor
thermal protector are activated for
circuit 2 (only for EWWD360~540).

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Содержание EWWD120MBYNN

Страница 1: ...OPERATION MANUAL EWWD120MBYNN EWWD180MBYNN EWWD240MBYNN EWWD280MBYNN EWWD360MBYNN EWWD440MBYNN EWWD500MBYNN EWWD520MBYNN EWWD540MBYNN Packaged water cooled water chillers...

Страница 2: ...Y KEEP IT IN YOUR FILES FOR FUTURE REFERENCE Before starting up the unit for the first time make sure that it has been properly installed It is therefore necessary to carefully read the installation m...

Страница 3: ...0 Condensor Type shell tube Qtyxmodel 2x CDEW400 1x CDEW400 1x CDEW450 2x CDEW450 Evaporator Type brased plate heatexchanger Qtyxmodel 2x AC250EQ NP128 1x AC250EQ NP128 1x AC250EQ NP162 2x AC250EQ NP...

Страница 4: ...harge stopvalve 3 Condenser 19 Condensor entering water temperature sensor 4 Switchbox 20 Digital display controller 5 Compressor switchbox 21 Emergency stop 6 Air purge condenser 22 Power supply inta...

Страница 5: ...ion of the evaporator is to take heat from the water that flows through it This is done by turning the liquid refrigerant coming from the condenser into gaseous refrigerant Water in outlet connection...

Страница 6: ...essure relief safety valve The safety valve is activated when the pressure in the refrigerant circuit becomes too high If this occurs shut down the unit and contact your local dealer High pressure swi...

Страница 7: ...ield wiring Make sure that the field wiring between the local supply panel and the unit has been carried out according to the instructions described in the installation manual according to the wiring...

Страница 8: ...phanumeric display may decrease at low temperatures OPERATION The EWWD120 540 units are equipped with a digital controller offering a user friendly way to set up use and maintain the unit This part of...

Страница 9: ...tialization cycle is started Once all the timers have reached zero the unit starts up When the remote ON OFF control parameter is set to YES the following table applies 2 If the water chiller does not...

Страница 10: ...frigerant in circuit 1 respectively circuit 2 The first number stands for the pressure in bar the second number stands for the saturation temperature in degrees Celsius low pressure of the refrigerant...

Страница 11: ...rcuits The red LED inside the p key lights up and the buzzer inside the controller is activated When a circuit safety occurs the compressor of the corresponding circuit is shut down The screen of the...

Страница 12: ...n the first screen of the network menu To consult information about the outlet water temperature of the evaporator of circuit 1 and 2 only for EWWD360 540 To consult information about the unit status...

Страница 13: ...information about the network safety which caused the shutdown To consult information about the dual pump wich caused the shutdown To check the time and control mode at the moment of the unit shutdown...

Страница 14: ...evaporator and or condenser entering water temperature to control the capacity of the unit outlet control mode uses the evaporator leaving water temperature to control the capacity of the unit To chec...

Страница 15: ...their setting needs to be reset to See User settings menu on page 11 The screen of the user settings menu allows the user to define the schedule timer settings Each day of the week can be appointed to...

Страница 16: ...rd each time he wants to change the setpoint Defining BMS control allows the user to control the unit from a supervisory system The screen and screen of the service menu have to be used to set BMS par...

Страница 17: ...the latest shutdown To check the safety info and the unit status proceed as follows 1 Enter the Refer to the chapter How to enter a menu on page 8 The controller enters the last screen which contains...

Страница 18: ...e g and h keys 6 Press q to confirm the new password When the new password has been confirmed the controller will ask to enter the new password a second time for safety reasons The cursor is positione...

Страница 19: ...panel or measure the supply voltage Voltage too low Measure the supply voltage Overload of motor Reset If the failure persists call your local dealer RESET Push the blue button on the over current rel...

Страница 20: ...apacity of the unit is too low Call your local dealer Water flow is too high Recalculate the water flow The circuit is limited Check the enable disable capacity limitation remote contact POSSIBLE CAUS...

Страница 21: ...perly and that the earth terminals are tightened Refrigerant circuit Check for leaks inside the unit In case a leak is detected call your local dealer Check the working pressure of the unit Refer to p...

Страница 22: ...to the settings in group 2 all Saturdays and Sundays will work according to the settings in group 3 all holiday days will work according to the settings in the holiday group All group settings of gro...

Страница 23: ...1 1 q h q q g h h h g h g h g h g h h g h g 2 0 1 1 1 1 g g h g g h g h g h g h g h g h g g h g h g h g h h g g 1 f 3 3 1 4 3 3 1 3 3 3 3 3 3 3 3 3 2 3 3 3 3 g h g h g h q h h g q h g h g h g h g h g...

Страница 24: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW22685 1...

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