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NANO NPC 280 Service Manual
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NANO NPC 280 Service Manual

Precision water chillers
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NPC 280 - 400 60 Hz UL
SERVICE MANUAL
n-psi-C1-SM-02-01-US

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Summary of Contents for NANO NPC 280

  • Page 1 NPC 280 - 400 60 Hz UL SERVICE MANUAL n-psi-C1-SM-02-01-US...
  • Page 3 7.3.1 Button function in combination ....................... 23 Symbols and leds of the display ....................23 Remote terminal ........................23 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 4 11.1.11Heat recuperator parameters (NOT ENABLED FUNCTION) ...............41 11.1.12Alarm parameters ............................41 ................................43 ALARMS 12.1 Alarm codes and actions ......................43 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 5 Table 2 W ARNING SYMBOLS NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 6 MODEL and MACHINE NUMBER shown on the machine data plate and on the first page of this manual. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 7 MODEL Weight (kg) 1245 1285 1345 Weight (lb) 2744 2832 2965 Table 3 W EIGHTS NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 8 Keep a written record of all maintenance and repair work carried out on the unit and auxiliary equipment. The frequency and the nature of the work required over a period can reveal adverse operating conditions which should be corrected. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 9 Wash immediately with plenty of water. Remove contaminated clothing immediately. FIRE-FIGHTING MEASURES Means of extinction: Any means. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 10 R125: 0.84 - R134a: 0.28 Ozone depletion potential ODP (R11=1): CONSIDERATIONS ON DISPOSAL Usable with reconditioning. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 11: Technical Data

    O t h e r d a t a r e l a t i v e t o t h e s t a n d a r d m a c h i n e s 3 . 1. 1 Di me n si o n s See enclosures. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 12 (5,2 FT) from the ground. Values tolerance ± 2 dB. Sound power level: in compliance with ISO 3744 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 13 Bleed the circuit by unscrewing the bleed cap on the pump whenever the water circuit is filled .See 5.4 “Collegamenti idraulici” . NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 14 The pump and tank can be equipped with electrical heaters to prevent icing up (instead of using glycol solutions). NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 15: Installation

    Carry out the level sensor calibration when the unit is activated the first time. Repeat the operation each time the composition of the process liquid changes. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 16 The non-observance of this prescription can cause big damages to the evaporator. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 17 1,0067 1,0199 1,033 1,0461 40(104) 0,9905 1,003 1,0156 1,0282 1,0408 Table 8 S PECIFIC WEIGHTS NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 18 240/120 230/115 220/110 600/347 575/332 550/318 480/277 460/266 440/254 416*/240 400*/230 380*/220 208/120 200/115 190/110 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 19 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 20 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 21 When SET-POINT value has been reached, the electronic control controlling the water inlet temperature stops the compressor. The water pump, on the other hand, is always in motion. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 22 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 23: Electronic Control

    Fahrenheit degree (If not viewed) General alarm BLINKING Alarm without icon Bar pressure PSI pressure NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 24 During the prog.: It views the codes of the parameters or decreases their values press once NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 25 Failure to connect the remote terminal when the remote terminal parameter is enabled will cause the appearance of signal ATR1(2) on the controller display. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 26 The parameters of the “CF” configuration can be modify only when the unit is in Stand-by mode. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 27 When the unit is running and the led near the corresponding button is on. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 28 7. To exit the function ALrM and go back to the normal visualization, press or wait for the time-out. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 29 3. To store the new set point, press or wait for time-out to exit the programming procedure. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 30 EVAPORATOR WATER OUTLET TEMPERATURE PROBE CIRCUIT 2 BAT1 AMBIENT TEMPERATURE PROBE (Only if antifreeze protection is present) NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 31 °F 27.2 394.5 63.4 146.1 20.5 297.3 51.5 124.7 R407C 24.6 -17.3 39.1 -8.8 16.2 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 32: Neutral Zone

    If during a certain time the temperature measured increases, the compressors will start with a delayed sequence. In this way the number of compressors in operation is always optimal. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 33 The pressure and the fan rotation speed values are set by the electronic control and can not be modified by the user. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 34 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 only on instruction by the nano-purification solutions Service Centre): 1. Make...

  • Page 35: Operation And Maintenance

    A further access to the evaporator and to the components of the hydraulic circuit can be carried out by removing the panel (F) or the side panels (D) and (E). NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 36 - This plan is based on an average working situation. - In some installations it may be necessary to increase the frequency of maintenance. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 37: Troubleshooting

    (units without hydraulic • main alarm relay tripped. again (chapter Electronic kit). control). NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 38 On (“I”). transformer secondary winding connector, there will be not tension survey. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 39 • AEE flashes on the display; • the led of general alarm icon lights up. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 40 NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

  • Page 41: Setting Tables

    1= NTC probe installed terminal kit 2= NTC probe not installed Operating logic NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 42 Auxiliary relay circuit n° 1 (NOT ENABLED FUNCTION) Auxiliary relay circuit n° 2 (NOT ENABLED FUNCTION) Password Password Password NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 43 Low pressure alarm High pressure alarm Oil alarm Flow meter alarm Compressor thermal protection alarm Pump-down alarm NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 44 Alarm relay Password for alarm history reset - compressor thermal protection alarm Password Password Password NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 45 Flashing valve not configured. - Incorrect combination of the defrost parameter values (dF22/dF23) (**) NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 46 (relay: solenoid pump-down, heaters, inversion valve, condensing fan ON - OFF, recovery, auxiliary) NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 47 0; Star centre coil 2 / when starting is direct; Capacity control not foreseen NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 48 Clock to be adjusted Clock adjusted Manual (reset Alarm relay + procedure in buzzer enabled Flashing functions menu) NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 49 2. On the start-up of the compressor for the AL01 (**) time NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 50 Pbr still measures a temperature < than the set AL33 (**) for at least AL36 (**) seconds, the unit is blocked and an antifreeze alarm is signalled. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 51 > than the set (**)- differential signal CO44(**) CO44(**) After unloading is activated and after parameter CO47(**) NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.
  • Page 52 (**) The values of parameters can not be modified or accessed by user. If it is necessary to modify them please contact the qualified personnel. NPC 280 - 400 The data inside this manual are not binding and they can be modified by the manufacturer without notice. All rights reserved.

This manual is also suitable for:

Npc 330Npc 400