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EWWP045~06 ECB1~3MUW

 

Packaged water-cooled water chillers

 

4PW30041-1A

 

Operation manual

 

4

 

Safety devices

 

 

Overcurrent relay
The overcurrent relay (K*S) is located in the switch box of the
unit and protects the compressor motor in case of overload,
phase failure or too low voltage. The relay is factory-set and may
not be adjusted. When activated, the overcurrent relay has to be
reset in the switch box and the controller needs to be reset
manually.

 

 

High-pressure switch
The high-pressure switch (S*HP) is installed on the discharge
pipe of the unit and measures the condenser pressure (pressure
at the outlet of the compressor). When the pressure is too high,
the pressure switch is activated and the circuit stops. 
When activated, it resets automatically, but the controller needs
to be reset manually.

 

 

Low pressure switch
The low-pressure switch (S*LP) is installed on the suction pipe
of the unit and measures the evaporator pressure (pressure at
the inlet of the compressor). When the pressure is too low, the
pressure switch is activated and the circuit stops. 
When activated, it resets automatically, but the controller needs
to be reset manually.

 

 

Reverse phase protector
The reverse phase protector (R1P) is installed in the switch box
of the unit. It prevents the compressor from running in the wrong
direction. If the unit does not start, two phases of the power
supply must be inverted.

 

 

Discharge thermal protector
The discharge thermal protector (Q*D) is activated when the
temperature of the refrigerant leaving the compressor becomes
too high. When the temperature returns to normal, the protector
resets automatically, but the controller needs to be reset
manually.

 

 

Freeze-up protection
The freeze-up protection prevents the water in the evaporator
from freezing during operation. When the outlet water
temperature is too low, the controller disables the circuit. When
the outlet water temperature returns to normal, the circuit can
start up again. 
When freeze-up protection occurs several times in a certain
period, the freeze-up alarm will be activated and the circuit will
be shut down. The cause of freezing up should be investigated
and after outlet water temperature has risen enough, the alarm
indicator on the controller needs to be reset manually.

 

 

Additional interlock contact 
To  avoid that the unit could be started or run without water
circulating through the water heat exchanger, an interlock
contact (S11L) of e.g. a flow switch must be installed in the start-
up circuit of the unit.

 

Internal wiring - Parts table

 

Refer to the internal wiring diagram supplied with the unit. The
abbreviations used are listed below:

A1P........................ PCB terminal unit

A2P.................**.... PCB address card

F1,2,3U...........# .... Main fuses for the unit

F5B,F6B ................ Automatic fuse for the control circuit/secondary 

of TR1

F8U........................ Surge-proof fuse

F9U.................## .. Surge-proof fuse

H1P.................* ..... Indication lamp alarm

H3P.................* ..... Indication lamp operation compressor (M1C)

H4P........................ Indication lamp operation compressor (M2C)

K1A........................ auxiliary contactor for alarm (for 16~24Hp only)

K1A........................ auxiliary contactor for high pressure 

(for 32~72Hp only)

K1M ....................... Compressor contactor (M1C)

K1P ................ * ..... Pumpcontactor

K2M........................ Compressor contactor (M2C)

K4S ........................ Overcurrent relay (M1C)

K5S ........................ Overcurrent relay (M2C)

K19T ...................... Timer, time delay for M2C

M1C,M2C ............... Compressor motor

PE .......................... Main earth terminal

Q1D........................ Discharge thermal protector (M1C)

Q2D........................ Discharge thermal protector (M2C)

R1P ........................ Reverse phase protector

R3T ........................ Evaporator inlet water temperature sensor

R4T ........................ Evaporator outlet water temperature sensor

(Freeze up sensor)

R5T ........................ Condenser inlet temperature sensor

S1HP,S2HP............ High pressure switch

S4LP,S5LP ............. Low pressure switch

S7S ........................ Switch for remote cooling/heating selection 

(for 16~24Hp only)

S7S ........................ Changeable digital input 1(for 32~72Hp only)

S9S ................ * ..... Switch for remote start/stop (for 16~24Hp only)

S9S ................ * ..... Changeable digital input 2 (for 32~72Hp only)

S10L............... #..... Flowswitch

S11L............... #..... Contact that closes if the pump is working

S12S .............. #..... Main isolator switch

TR1 ........................ Transfo 230 V 

 

 

 24 V for power supply of 

controllers

Y1R ........................ Reversing valve

Y1S ........................ Solenoid valve for injection line

X1 ...........................Connector for digital inputs, analog inputs, analog 

outputs and for power supply controller (A1P)

X2........................... Connector for digital outputs (A1P)

X3........................... Connector for (A1P)

X4,X5,X6................ Interconnection connector Main 

 

 

 Control 

switchbox

 

Terminal unit: Digital Inputs

 

X1 (ID1-GND) ........ flowswitch

X1 (ID2-GND) ........ remote cooling/heating selection

X1 (ID3-GND) ........ high pressure discharge pro 

overcurrent

X1 (ID4-GND) ........ low pressure switch

X1 (ID5-GND) ........ remote On/Off

 

Terminal unit: Digital outputs (relays)

 

X2 (C1/2-NO1) ....... compressor M1C on

X2 (C1/2-NO2) ....... compressor M2C on

X2 (C3/4-NO3) ....... voltage free contact for pump

X2 (C3/4-NO4) ....... voltage free contact for reversing valve

X2 (C5-NO5) .......... alarm voltage free contact

 

Terminal unit: Analog inputs

 

X1 (B1-GND).......... evaporator inlet water temperature

X1 (B2-GND).......... evaporator outlet water temperature (Freeze up 

sensor)

X1 (B3-GND).......... condenser inlet water temperature

 

Not included with standard unit

Not possible as option

Possible as option

Obligatory

#

##

Not obligatory

*

**

Summary of Contents for EWWP045KAW1M

Page 1: ...OPERATION MANUAL EWWP045KAW1M EWWP055KAW1M EWWP065KAW1M ECB1MUW ECB2MUW ECB3MUW Packaged water cooled water chillers...

Page 2: ...arting up the unit for the first time make sure that it has been properly installed It is therefore necessary to carefully read the installation manual supplied with the unit and the recommendations l...

Page 3: ...nning current A 10 4 13 1 15 0 10 4 10 4 13 1 13 1 13 1 15 15 10 4 13 1 10 4 13 1 13 1 13 1 15 13 1 15 15 27 11 23 26 500 500 500 2 3 1 4 20 17 12 13 24 21 18 25 16 22 19 28 28 28 8 5 6 9 7 10 15 14 1...

Page 4: ...denser removes small particles from the refrigerant to prevent blockage of the tubes Expansion valve The liquid refrigerant coming from the condenser enters the evaporator via an expansion valve The e...

Page 5: ...rough the water heat exchanger an interlock contact S11L of e g a flow switch must be installed in the start up circuit of the unit Internal wiring Parts table Refer to the internal wiring diagram sup...

Page 6: ...ommendations Before switching on the unit read following recommendations 1 When the complete installation and all necessary settings have been carried out close all front panels of the unit 2 The serv...

Page 7: ...ter a few minutes consult the actual operational information available in the list of direct parameters Also refer to the chapter Troubleshooting on page 19 Switching the unit off To switch the unit o...

Page 8: ...he parameter codes 5 To consult other actual operational information repeat from instruction 2 onwards 6 To return to normal operation press the E key or wait approximately 40 seconds In the first cas...

Page 9: ...s of the user password When scrolling through the list of parameters using the A and or Z key you see the direct parameters and user parameters The user parameters appear in the following order d to d...

Page 10: ...g on the setting of user parameter d all temperature values are displayed in C or in F The conversion formulas from C to F and vice versa are T C T F 32 1 8 T F T C x 1 8 32 If user parameter d is set...

Page 11: ...ars on the display Enabling or disabling the buzzer When an alarm is detected the buzzer is activated for the period defined by user parameter p4 The default limit and step values for the activation p...

Page 12: ...arameter code h9 using the A and or Z key 3 Press the R key to switch to the parameter value 4 Select the appropriate setting using the A and or Z key 5 Press the R key to return to the list of parame...

Page 13: ...and an initialization cycle is started Once all the timers have reached zero the unit starts up When a remote ON OFF switch is configured the following table applies 2 When the unit is started up for...

Page 14: ...ture of condenser setpoint 2 In double thermostat operation two setpoints are reserved for inlet control of the evaporator and two others are reserved for inlet control of the condenser INLSETP 1 E in...

Page 15: ...information i e the number of times a unit safety or a circuit safety occurred and the unit status at the moment of shutdown can be checked by means of the history menu To consult actual operational...

Page 16: ...SOR TIMERS COMPR STARTED 00s BC COMPRESSOR TIMERS C11 GRD 000s AR 000s C12 GRD 000s AR 000s C21 GRD 000s AR 000s BW COMPRESSOR TIMERS C22 GRD 000s AR 000s C31 GRD 000s AR 000s C32 GRD 000s AR 000s BX...

Page 17: ...SETTINGS screen of the user settings menu The default limit and step values for the thermostat parameters are Defining the lead lag mode The lead lag mode determines which module starts up first in ca...

Page 18: ...ow through the evaporator stops after the flowstart timer has reached zero If the water flow has not restarted during the countdown the unit will shut down PUMPLEAD PUMPLEAD refer to the pump control...

Page 19: ...l setpoint switch setpoint 1 or setpoint 2 REM ON OFF indicates the status of the remote on off switch CAP LIM1 2 3 indicates the status of the enable disable capacity limitation switch es The locked...

Page 20: ...ivated The ON LED is broken Contact your local dealer The unit is in bypass mode Check the bypass remote contact POSSIBLE CAUSES CORRECTIVE ACTION One of the following safety devices is activated Comp...

Page 21: ...ter filters Check if the mesh width is 1 mm maximum Disposal requirements Dismantling of the unit treatment of the refrigerant oil and any other parts should be done in accordance with the relevant lo...

Page 22: ...t control default 32 48Hp 4 step thermostat control default 32 48Hp 6 step thermostat control default 52 72Hp 6 step thermostat control default 52 72Hp 0 1 2 a b Stepnumber Setpoint Temperature 0 1 2...

Page 23: ...group settings of groups G1 G2 G3 G4 and H work similar as following example settings for group 1 MARCH MON TUE WED THU FRI SAT SUN 1 G1 2 G1 3 G2 4 G1 5 G1 6 G3 7 G3 8 G1 9 G1 10 G2 11 G1 12 G1 13 G...

Page 24: ...HAS STOPPED OUTE1 07 0 C OUTE3 OUTE2 07 0 C 07 0 C e UNIT HISTORY 003 0AE FLOW HAS STOPPED C11 OFF SAF C21 C12 OFF SAF OFF SAF e UNIT HISTORY 003 0AE FLOW HAS STOPPED C22 OFF SAF C32 C31 OFF OFF e UN...

Page 25: ...NOTES NOTES...

Page 26: ...Zandvoordestraat 300 B 8400 Oostende Belgium 4PW30041 1A...

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