NANO Precision NPC 015 Service Manual Download

Page: 42 / 42

The data inside this manual are not binding and they can be modified by the manufacturer without notice.

NPC 015 TO 230

1 2 . 2 O u t l e t b l o c k i n g

NOTE

The electronic control board is furnished with a “history” loop, see chapter 7.12.5 “How to display the alarm historic “ALoG”” .

Alarm code Alarm Description

Comp. 1

Comp. 2

Antifreeze

Resistances Pump

BEWOT

probe

Yes

BTWOT

probe

Yes

BCP1

probe

Yes

BAT1

probe

Yes

A01

High pressure switch

Yes

Fan thermal protection

Yes

A02

Low pressure switch

Yes

A03

Ambient air low temperature

A04

Air low temperature at unit

outlet

Yes

A05

High temperature High

pressure

Yes

A06

Low pressure Low

temperature

Yes

A07

Analogue input antifreeze

Yes

A07

Digital input antifreeze

Yes

A07

Motorcondensing antifreeze

Yes

A08

Flow meter/pump thermal

protection

Yes

Boiler Res.

Yes

A09

Compressor 1 thermal

protection

Yes

A10

Compressor 2 thermal

protection

Yes

A09-A10

Compressor 1-2 thermal

protection

Yes

A13

Compressor 1 maintenance

A14

Compressor 2 maintenance

A15

Water pump maintenance

A20

Low water temperature

BTWOT

A21

High water temperature

BTWOT

rtC

Clock alarm

rtF

Clock alarm

Eeprom error

Yes

ACF2

Configuration alarm

Yes

ACF3

Configuration alarm

Yes

ACF4

Configuration alarm

Yes

ACF6

Configuration alarm

Yes

FErr

Operating error

(motorcond.)

Yes

Afr

Net frequency alarm

Yes

ALOC

Generic alarm

Yes

Summary of Contents for Precision NPC 015

Page 1: ...n psi C1 SM 01 01 US NPC 015 230 60 Hz UL SERVICE MANUAL...

Page 2: ......

Page 3: ...pumps and of the fans 9 3 1 3 Sound Level Measurements 10 DESCRIPTION 11 4 1 Components 11 4 2 Cooling circuit 11 4 3 Compressors 11 4 4 Condenser 11 4 5 Evaporator 11 4 6 Tank 11 4 7 Pump 11 4 8 Fan...

Page 4: ...Point 26 7 13 2 How to modify the Set Point 26 7 14 Compressors unloading function 26 7 15 Probe key 26 OTHER COMPONENTS SETTING 27 8 1 Compressor integral protection PI 27 8 2 Refrigerant high and lo...

Page 5: ...sion drawing and refrigeration circuits in this manual Their meaning is the following The following warning symbols are shown on the stickers on the unit If requested the same stickers are available a...

Page 6: ...or to the nearest service centre providing the MODEL and MACHINE NUMBER shown on the machine data plate and on the first page of this manual Hazardous voltage All doors must be closed before energizi...

Page 7: ...rking which is not specifically recommended he must ensure that the unit and auxiliary equipment will not be damaged or made unsafe and that there is no risk to persons or property Any improper use of...

Page 8: ...iated equipment while voltage is applied unless it is necessary for measurements tests or adjustments Such work should be carried out only by a qualified electrician equipped with the proper tools and...

Page 9: ...n electrical power or attempt to start the unit if a warning label is attached Coloured tracers can be used in service maintenance operations Inspect all refrigerant circuit joints including connector...

Page 10: ...int 43 9 C at atm press Flammability point Non flammable Relative density 1 138 kg l at 25 C Solubility in water Negligible STABILITY AND REACTIVITY Stability No reactivity if used with the relative i...

Page 11: ...s and upper models MAX COOLING PRESSURE HP SIDE This is the design pressure of the refrigeration circuit of the high pressure side MAX COOLING PRESSURE LP SIDE This is the design pressure of the refri...

Page 12: ...400 28178 9200 40506 16000 70445 Model 120 130 150 180 210 230 Tank capacity water volume litres galUS 255 67 255 67 350 92 350 92 350 92 350 92 PUMP P3 water flow rate m3 h gpm 3 0 18 7 0 79 3 3 7 18...

Page 13: ...compartment 4 4 C o n d e n s e r Condensation occurs through fin pack coils consisting of copper tubes and collectors aluminium fins and shoulders in galvanised sheet 4 5 E v a p o r a t o r The eva...

Page 14: ...h t h e l i q u i d t o b e c o o l e d There can be two different groups Standard refrigerators carbon steel copper aluminium zinc brass stainless steel and plastics in particular evaporator with cop...

Page 15: ...e metre around the unit to permit access during service operations 6 Do not obstruct or disturb the condenser s flow of thermal exchanging air 5 3 A n t i f r e e z e p r o t e c t i o n Even if the m...

Page 16: ...ir infiltrations into the water circuit it is advisable to install an automatic bleed valve 4 If the machine is supplied without a pump make sure that the pump installed by the user has the suction di...

Page 17: ...If the pump runs noisily or emits anomalous noise it may be necessary to bleed the liquid circuit in order to prime the pump The procedure is as follows unscrew the filler breather plug at the top of...

Page 18: ...omply with the values indicated on the machine data plate Main distribution systems in United States Main distribution systems in Canada System Nominal Voltage Utilization Voltage 120 115 110 240 120...

Page 19: ...diagram upline from the power cable For this purpose all protection devices must be homologated listed 4 Use conductors which can carry the maximum current required at the maximum ambient operating te...

Page 21: ...n is correct If necessary invert two phases of supply 13 Check that the pressure difference between the value read on the manometer located on the machine control panel with the pump in motion and the...

Page 23: ...ius degrees If displayed Low pressure alarm Fahrenheit degrees If not displayed Antifreeze resistance Bar Psi D Pump on Compressor 1 Flow meter alarm Compressor 2 Time to defrost starting P Stand by u...

Page 24: ...not present LED LED STATUS MEANING LED LED STATUS MEANING 4 Not enabled 5 Not enabled Steady Unit on in chiller modality 5 Not enabled 5 Flashing Programming phase if flashes together with led Clock...

Page 25: ...ars ALL the first group of parameters 2 Select the various groups using and buttons 3 After selecting a group press button if the selected group is part of the selected menu or any parameter of this g...

Page 26: ...ottom part of the display it appears the probe BEWOT Parameter CF42 CF44 1 In the bottom part of the display it appears the probe BTWOT Parameter CF42 CF44 2 In the bottom part of the display it appea...

Page 27: ...the alarm can not be reset it appears the Label NO 5 Use or button to scroll all the alarms 6 When the Label rSt is displayed press to reset the alarm and go to the following one 7 To exit press butt...

Page 28: ...4 C o m p r e s s o r s u n l o a d i n g f u n c t i o n This procedure is necessary when sudden peaks in cooling demand occur for instance if the machine is restarted after a long period of inactiv...

Page 29: ...ibed in Chapter 7 Electronic Board If the cause of the pressure switch tripping has not removed this cycle will repeat continuously 2 high pressure switch HP This monitors the refrigerant compressor d...

Page 30: ...by the user The level sensor indicates the absence of process water inside the tank An alarm with relative blocking of the unit appears on the control display Level sensor calibration to be performed...

Page 31: ...off and disconnected from power supply To access the components of the refrigerant circuit use an appropriate key furnished with the unit and operate on the closing bolts of the front panel A The acc...

Page 32: ...5 bar with the circuit closed x In units with hydraulic group check that the difference between the discharge and the suction pressure of the pump measured on the manometer with the pump stopped is w...

Page 33: ...A1 1 with pump installed on the machine pressure difference read on the machine pressure gauge too low with pump stopped and pump running possible tripping of pump thermal protection Reduce water flow...

Page 34: ...d D5 See A4 D5 1 See D1 1 Clean the front surface of the condenser Follow the alarm reset procedure to star up the unit again chapter Electronic Board D6 Thermal load too high D6 1 Water outlet temper...

Page 35: ...ts main alarm relay tripped Increase the water flow J Alarm displayed A08 pump thermal protection J1 The pump s thermal protection device has tripped because the water flow is too high J1 1 See proble...

Page 37: ...r s value 11 1 1 Thermoregulation parameters 11 1 2 Configuration parameters Parameter Level Description Min Max Udm Resolution Factory setting ST01 U Summer set point ST05 ST06 C F C F Dec Int 9 C wi...

Page 38: ...n Min Max Udm Resolution Factory setting Pr2 Password 0 999 Parameter Level Description Min Max Udm Resolution Factory setting Pr2 Password 0 999 Parameter Level Description Min Max Udm Resolution Fac...

Page 39: ...d open collector outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed Manual Digital input disabled and the resetting procedure is car...

Page 40: ...shes The alarm code is displayed Manual Digital input disabled and the resetting procedure is carried out A10 Compressor 2 thermal alarm Digital input enabled open collector outlet alarm relay is acti...

Page 41: ...or outlet alarm relay is activated The buzzer is activated The icon for general alarm flashes The alarm code is displayed Automatic With correct re programming ACF3 Configuration alarm Two digital inp...

Page 42: ...ture High pressure Yes Yes A06 Low pressure Low temperature Yes Yes A07 Analogue input antifreeze Yes Yes A07 Digital input antifreeze Yes Yes A07 Motorcondensing antifreeze Yes Yes A08 Flow meter pum...

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