Thermal Care Accuchiller MX Series Скачать руководство пользователя страница 38 | Manualshive

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Preventive Maintenance Checklist

Maintenance Activity

Week Number

1

2

3

4

5

6

7

8

9

10

11

12

Date

Chilled Water Set Point

Temperature Control

Chiller % Loading

Condenser Water Temperature

Condenser Ambient Temperature

Refrigerant Suction Pressure

Refrigerant Discharge Pressure

Refrigerant Sight Glass

Compressor Oil Level

Electrical Connections

Incoming Voltage

Compressor L1 Amps

Compressor L2 Amps

Compressor L3 Amps

Refrigerant Superheat

Refrigerant Subcooling

Compressor Discharge Check Valve

Compressor Crankcase Heater

Evaporator PSID

Condenser PSID

*Clean Condenser

*Clean Evaporator

*Oil Analysis

* Once a year

Drawings

We have prepared a custom set of drawings for your unit and placed them inside the control panel prior to
shipment. Please refer to these drawings when troubleshooting, servicing, and installing the unit. If you cannot
find these drawings or wish to have additional copies sent, please contact our Customer Service Department and
reference the serial number of your unit.

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Содержание Accuchiller MX Series

Страница 1: ......

Страница 2: ......

Страница 3: ...rmining Equivalent Line Length 6 Table 1 Equivalent Lengths of Elbows 7 Liquid Line Sizing 7 Table 2 Liquid Line Size Circuit inches OD 7 Discharge Hot Gas Line Sizing 7 Figure 4 Vertical Riser Traps...

Страница 4: ...nputs Outputs Screens 16 Figure 20 Digital Inputs Screen 16 Figure 21 Digital Outputs Screen 16 Figure 22 Analog Inputs Screen 16 Figure 23 Analog Outputs Screen 17 Figure 24 RTD Inputs Screen 17 Menu...

Страница 5: ...Restore Factory Settings 23 Figure 36 Factory Settings Restored 23 Menu 2 Remote Mode 23 Menu 2 Backup Chiller 23 Figure 37 Backup Chiller Screen 23 Menu 2 Modbus BAS 23 Figure 38 Modbus Setup Screen...

Страница 6: ...Checking Compressor Oil Level 29 Cleaning the Operator Interface 29 General Troubleshooting 29 Preventive Maintenance Checklist 32 Drawings 32...

Страница 7: ...erant for heat transfer purposes This chemical is sealed and tested in a pressurized system containing ASME coded vessels however a system failure will release it Refrigerant gas can cause toxic fumes...

Страница 8: ...aining or repairing the equipment to protect against any sparks debris or fluid leaks Pre Installation Receiving Inspection When the unit arrives verify the information on the unit nameplate agrees wi...

Страница 9: ...d impact loading caused by sudden jerking when lifting or lowering the chiller Use pads where abrasive surface contact may occur Process Fluid Piping Proper insulation of chilled process fluid piping...

Страница 10: ...meter elevation when operating Wear ear protection as required for personal comfort when operating or working in close proximity to the chiller CAUTION Wear protective gloves when installing maintaini...

Страница 11: ...ide lifting brackets Use spreader bars when lifting to apply the lifting force vertically Under no circumstances use the coil headers or return bends in the lifting or moving of the condenser Mounting...

Страница 12: ...er than 100 actual feet without a minimum of 2 efficiency decrease 4 To form a proper liquid seal at the condenser immediately drop at least 15 inches down from the liquid outlet before routing the pi...

Страница 13: ...ght from the condenser liquid line connection The liquid line does not require pitching Install a pressure tap valve at the condenser to facilitate measuring pressure for service Liquid lines do not t...

Страница 14: ...Systems Designed for 40 F to 80 F Set Point 50 Ton 75 Ton 100 Ton 125 Ton 50 Ton 75 Ton 100 Ton 125 Ton 25 A 1 3 8 1 5 8 1 5 8 1 5 8 1 3 8 1 5 8 1 5 8 2 1 8 B 1 5 8 2 1 8 2 1 8 2 5 8 1 5 8 2 1 8 2 1...

Страница 15: ...leg is not within the specified range notify the supplier and correct before operating the unit Voltage imbalance must not exceed two percent Excessive voltage imbalance between the phases of a three...

Страница 16: ...begins once a compressor starts and will not let that compressor restart until the recycle timer has timed out When the start button is pressed any pumps controlled by the chiller will turn on any con...

Страница 17: ...s screen displays for 5 seconds after the Programmable Logic Controller PLC and Human Machine Interface HMI establish communications The control system version is located on this start up screen Figur...

Страница 18: ...is button displays the set point and process temperatures in a large font Figure 9 Alarms Button A listing of active and prior alarm history Figure 11 Figure 12 Figure 13 Detail Provide additional cir...

Страница 19: ...Figure 25 EXV Control Electric Expansion Valve Setup Figure 26 Discharge Control Water Regulating Valve Setup Discharge Pressure Control Figure 27 Figure 28 Capacity Control This shows the compressor...

Страница 20: ...ion of the display will be blank All alarms must be resolved and reset using the RESET ALARM button Alarm Setup The Alarm Setup screen allows changes to alarm settings Figure 12 Alarm Setup Alarm Glyc...

Страница 21: ...Screen will display the Interlock Screen If the compressor is not starting the reason for the fault will clearly be visible on this screen Figure 16 Interlocks Touching the CRITICAL button opens the...

Страница 22: ...puts Outputs Inputs Outputs Screens The Inputs Outputs screens provide the status of all digital inputs digital outputs analog inputs and outputs When the PLC input LED is on the corresponding input o...

Страница 23: ...Value Mode Selection AUTO MODE The valve will always respond relative to the demand PID regardless of how many compressors are running MANUAL MODE The manual mode value percent will be the output to t...

Страница 24: ...eat The difference between the saturated suction temperature and the suction line temperature is the superheat The superheat is factory set for 10 F and should never exceed 15 F or go below 4 F Only a...

Страница 25: ...cription Default Value Mode In Auto Mode the valve adjusts to maintain optimum performance In manual mode it holds to the input valve AUTOMATIC Discharge Setpoint Discharge Setpoint Value 133 PSIG Low...

Страница 26: ...25 100 of full capacity Figure 29 Capacity Control Screen Table 12 Capacity Control Parameters Menu Item Description Default Value Automatic or Manual Mode In Auto Mode the control system adjusts the...

Страница 27: ...or Staging Screen Table 14 Compressor Staging Parameters Menu Item Description Default Value Stage Up Trigger This parameter in conjunction with the Stage Up Delay determines at what percent the next...

Страница 28: ...view Figure 34 Menu 2 Screen Table 16 Menu 2 Functions Function Description Screen Reference Defaults Provides the ability to restore the control system back to factory defaults in the case that an un...

Страница 29: ...rt stop When active the Remote Mode toggle will indicate Remote Start Stop Enabled and when not active it will indicate Remote Start Stop Disabled Menu 2 Backup Chiller If this feature has been enable...

Страница 30: ...ankcase heater Disconnect main power only when servicing the chiller The crankcase heater should remain on when the compressor is off to ensure liquid refrigerant does not accumulate in the compressor...

Страница 31: ...ecialist in the industry is involved Table 17 shows the list of water characteristics and quality limitations Table 17 Fill Water Chemistry Requirements Water Characteristic Quality Limitation Alkalin...

Страница 32: ...vital that the Freezestat is set properly Step 6 Turn On Control Power Turn on the control power by turning the control power switch to On The panel displays should now be illuminated Due to extreme...

Страница 33: ...that there are locations for voltage readings amperages etc for monitoring over time With this information maintenance personnel may be able to correct a potential problem before it causes any downtim...

Страница 34: ...se heater when the heater is on Once a Year Repeat items 1 through 17 land continue with the following 18 Check the condition of the chilled water for algae and particulate fouling Back flush the evap...

Страница 35: ...r for five seconds Incorrect three phase rotation Correct phasing of incoming power Loss of phase Check incoming power High motor temperature Check oil level superheat liquid injection High oil discha...

Страница 36: ...e High condenser water temperature MXW models only Maximum temperature is 105 F Condenser water regulating valve MXW models only Replace if faulty High condenser air temperature MXR models only Maximu...

Страница 37: ...apacity Check to make sure chiller is properly sized for process load Thermocouple Replace if faulty Microprocessor input card process sensor Replace if faulty Temperature values unsteady or out of ra...

Страница 38: ...2 Amps Compressor L3 Amps Refrigerant Superheat Refrigerant Subcooling Compressor Discharge Check Valve Compressor Crankcase Heater Evaporator PSID Condenser PSID Clean Condenser Clean Evaporator Oil...

Страница 39: ......

Страница 40: ...Sales Customer Service Parts Department 847 966 2260 info thermalcare com 847 966 2260 847 966 9358 fax 847 966 2636 847 966 8560 847 966 9358 fax www thermalcare com info thermalcare com service the...

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