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16

6 Messages and Error Indications

The following displays are shown when an error occurs or a hardware change is detected.

Table 4.  Error/Faults conditions 

Error/Faults 

Conditions

Upper display

Lower 

Display 

(where fitted)

Configuration & Setup is required. Seen at first turn on or if 

hardware configuration changed.
Press 

to enter Configuration Mode,

next press 

 or 

 to enter the unlock code number,

then press 

 to proceed. 

Configuration must be completed before return to operator 

mode is allowed

1

 

Goto

Conf

Loop alarm set for 

Auto

 but 

Pb_P

 is set to 0.0% (on/off 

control). Loop Alarm uses the manual Loop Alarm Time un-

til PID control is restored. Ensure that 

lat.

 is set correctly.

aerr

laen

PV Input more than 5% over-range

2

[HH]

*

Normal Display

PV Input more than 5% under-range

3

 

[LL]

*

Normal Display

Sensor Break. Break detected in the input sensor or wiring

oPeN

*

Normal Display

Auxiliary input over-range

Normal Display

[HH]

*

Auxiliary input under-range

Normal Display

[LL]

*

Auxiliary Break. Break detected in the auxiliary input

Normal Display

oPeN

*

Option 1 module fault.

err

**

oPn1

Option 2 module fault.

err

**

oPn2

Option 3 module fault.

err

**

oPn3

Option A module fault.

err

**

oPna

Option B module fault.

err

**

oPnb

*Note: Input sensor and Auxiliary over/under-range or break indications will be seen wherever these values would normally be 
displayed.

1

 This feature does not guarantee correct configuration. It only helps to ensure that the unit will be configured be-

fore use. Use of set-up mode is not enforced but may be essential for the users application.

2

 If the PV display exceeds 

9999

 before 5% over-range is reached, an over-range indication is given.

3

 Indicators will allow up to 10% under-range on non-zero based Linear ranges. If the PV display is less than 

-1999

 before the % under-range is reached, an under-range indication is given.

Содержание ACWC-024-E-DR-LT-0-2

Страница 1: ...78 281 227 8400 Fax 800 473 9175 281 227 8404 www waterchillers com INSTALLATION OPERATION AND MAINTENANCE INSTRUCTIONS ACWC 024 E RF and ACWC 240 E outdoor models shown AIR COOLED WATER CHILLERS UP T...

Страница 2: ...oor use to 0 F ambient Includes low ambient fan controls Casters optional M20 Suitable for outdoor use to 20 F ambient Hot Gas Bypass and Wind Baffles may be included Casters optional 7 Electrical Pow...

Страница 3: ...nd periodic maintenance requirements B INSPECTION This product has been inspected at the factory and released to the transportation agency without known damage Inspect carton s exterior for evidence o...

Страница 4: ...process as possible to reduce the system piping pressure drop C MOUNTING 1 Level the unit to ensure proper oil return to compressors and fluid draining 2 When unit is in proper location secure unit t...

Страница 5: ...ccessible in compliance with National Electrical Code NEC Section 440 14 b Verify electrical power on the Cold Shot Chillers label plate with actual voltage c Connect line power supply to terminal blo...

Страница 6: ...of hand near the base of the compressor by the heater F FREEZE PROTECTION 1 Protection of system components from freezing is of the utmost concern Freezing can occur from the external ambient or inter...

Страница 7: ...roperties of refrigerants The performance or COOLING capacity of a chiller is based on a standard set of operating conditions Changing the conditions results in different capacity rating of the chille...

Страница 8: ...tank is full Ensure that the pump and evaporator are filled with fluid prior to starting e Systems with an open tank are typically capable of bleeding excess air that is returned to the tank when the...

Страница 9: ...to turn on for cooling Move the selector switch to Cooling Cycle setting and the unit will begin cooling 8 During the cooling cycle condenser fans may turn on and off due to changes in refrigerant pre...

Страница 10: ...rical protection will shut down the compressor d To manually reset ASTP the compressor should be stopped and allowed to cool If the compressor is not stopped the motor will run until the motor protect...

Страница 11: ...and will automatically reset when pressure is above the non adjustable reset setting See specifications for details 12 REFRIGERANT HIGH PRESSURE SAFETY HPS a Monitors the pressure of the refrigerant a...

Страница 12: ...t can be setup to change automatically based on a system safety situation 21 TANK LEVEL OPTIONS a Float Valve a Located inside the tank the float valve is a mechanically float actuated valve supplied...

Страница 13: ...ERIFY a System water should be clean and free of contaminants If the chiller has a reservoir check for debris or contaminants which could reduce the efficiency of your chiller If the chiller has a flo...

Страница 14: ...YSTEM FOR LEAKS INSPECT AND TEST a If the system is operating and there is no indication of leaks avoid accessing the system unless necessary b Have a certified refrigeration technician check the refr...

Страница 15: ...s Adjust fluid bypass valve to increase flow Do not reset unless issue has been resolved Troubleshoot the switch DO NOT BYPASS IMPORTANT This condition can occur when the fluid in the evaporator nears...

Страница 16: ...on valve 3 Shortage of refrigerant due to leak 3 Repair leak and recharge 4 Overcharged system 4 Remove refrigerant adjust charge FROSTED LIQUID LINE AFTER DRIER 1 Restricted filter drier 1 Remove res...

Страница 17: ...ose wires cable connections or faulty contactors Another issue may be the components themselves Troubleshoot if needed If the supply TEMPERATURE CONTROLLER ERROR 1 Temperature indication not accurate...

Страница 18: ...is engaged FLASHING indicates that Controller Pre Tune mode is engaged FLASHING indicates that an alarm condition is present FLASHES in unison with Time Proportioning Primary outputs or turns ON with...

Страница 19: ...detected in the input sensor or wiring opeN Normal Display Auxiliary input over range Normal Display HH Auxiliary input under range Normal Display LL Auxiliary Break Break detected in the auxiliary in...

Страница 20: ...LED readout Refrigeration Components Efficient scroll compressors sight glass moisture indicators balance port expansion valves filter drier pump down valves fan cycling head pressure controls Proces...

Страница 21: ...0_ 0414 doc PUOD 000 001 2 0 1 Hp 1 Motor ODP Pump with 4 75 Impeller and 0 160 Vane at 3500rpm ASP SSPC Pump Motor Assembly Exploded View If needed the pump label is located on the pump casing near...

Страница 22: ...BACK VIEW DRAWN ENGINEERING ISSUED SIZE NOTES DWG NO REV A Front Right Back Drawing ACWC 24 E with Full Metal Cabinet 1 27 September 2013 SCALE 1 16 DWG INST_ACWC 24 E TypicalWithFMC _ 0613a pg1 vsd S...

Страница 23: ...ssor Models only Equalizing Tube Suction Accumulator DRAWN ENGINEERING ISSUED SIZE DETAIL REFRIGERATION CHILLED FLUID CIRCUIT REV A ref circuit Typical Air Water Cooled Water Chiller ACWC and WCWC Sin...

Страница 24: ...RETURN IN STRAINER Customer Process Bypass MANUAL TANK FILL TANK LEVEL SIGHT GLASS THERMOCOUPLE TO TEMPERATURE CONTROLLER Heat Exchanger Note Flow Switch typical on Low Temp Low Amb units FLOW SWITCH...

Страница 25: ...PC BLK BLK BLK BLK DISCONNECT FIELD SUPPLIED BRN L3 L1 T3 T1 SC BLK RED RED VIO ORN COMPRESSOR C S R CH BLK BLK GRN YEL GND CC HERM COM FAN RED DRC 1 5 2 BLK STRIPED PR M FAN MOTOR M CHILLER PUMP ORN...

Страница 26: ...ll piping is connected properly as appropriate Yes No 12 All chilled water valves are open as appropriate Yes No 13 Crankcase heaters energized for 24 hours before start up Yes No 14 Outdoor piping wr...

Страница 27: ...ight charges to ship these parts EXCLUSIONS The foregoing provisions state the exclusive remedy for any breach of warranty or any other claim in respect to the product described on the reverse side of...

Страница 28: ...s that are not manufacturing defects and are therefore not included in this Limited Warranty 1 Damage to unit or unsatisfactory operation due to improper cleaning or use of unit in corrosive atmospher...

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