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ICS iC 770 - User Manual

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WATER CHILLERS
OPERATING AND MAINTENANCE MANUAL
iC 215 ÷ iC 780
38178800943
Original instructions in Italian language

Table of Contents

Questions and Answers

  • K
    Kayla CantuAug 8, 2025
    Why is the ICS iC 770 Chiller tank water outlet temperature too high?
    • N
      Natalie ShawAug 8, 2025
      If the tank water outlet temperature (BTWOT) of your ICS Chiller is higher than the prescribed value, it could be due to several reasons. First, the thermal load might be too high; in this case, try to restore the thermal load to the prescribed limits. Secondly, the ambient temperature might be too high; if the unit is in an enclosed space, improve ventilation to reduce the ambient temperature to the recommended level. Also, check if the condenser fins are dirty and clean them if necessary. Ensure that the front surface of the condenser isn't blocked; if it is, remove the obstruction. Finally, it may be due to refrigerant fluid leak or compressor protection trips; in such cases, call a qualified refrigeration engineer to check for and fix any leaks and recharge the circuit.
  • R
    Rebecca CarterAug 23, 2025
    What to do if there is insufficient pressure head at the ICS iC 770 pump outlet?
    • P
      Pamela HowardAug 23, 2025
      If you're experiencing insufficient water pressure at the pump outlet of your ICS Chiller, it could be due to an excessively high water flow rate. Try restoring the flow rate to the prescribed limits, perhaps by partially closing the pump outlet cock. Also, reset the pump thermal cutout and check the electrical power consumption. Alternatively, the evaporator might be clogged by impurities. Clean the evaporator by flushing it with a mild detergent suitable for steel, aluminum, and copper, and supply a high flow rate of water in countercurrent conditions. Consider installing a filter upstream from the unit.

Summary

USERS QUICK GUIDE

Unit start;stop

Covers switching the unit on/off via keypad or digital input.

Alarms display and reset

SAFETY

General Safety Guidelines

Guidelines for handling and maintaining the unit safely, emphasizing user understanding.

Operational Precautions

Maintenance Precautions

Precautions for maintenance, including environmental protection, refrigerant use, and part replacement.

INSTALLATION

Unit Location Requirements

Hydraulic Connections

Instructions for connecting the water pipes, providing isolation valves, and filling the system.

Electrical Connections

Instructions for power supply connection, compliance with laws, and protection devices.

STARTING

Pre-Start Checks and Procedures

Detailed checks before starting the unit, including valves, temperature, pressure, and power.

Unit Start-Up Procedure

Step-by-step guide to starting the unit, including checks on compressors, fans, and pump operation.

ELECTRONIC CONTROLLER

User Interface and Button Functions

Overview of the controller's display, icons, buttons, and their operational functions.

Control Operations and Setpoints

Covers unit start/stop, setpoint management, and dynamic setpoint adjustments.

Circuit and Compressor Management

Alarms and Troubleshooting Indicators

Details on alarm display, reset, buzzer muting, general alarms list, and specific alarm types.

Advanced Control and Configuration

Covers programming access, parameter changes, hot-key use, and unit adjustment controls.

Compressor Control Strategies

System Parameters and Communication

OTHER COMPONENTS

Refrigerant Pressure Switches

Details on low and high pressure switches, their function, and trip/reset values.

OPERATION AND MAINTENANCE

Maintenance Overview

Accessing Unit Components

Instructions on how to open panels to access refrigerant, evaporator, hydraulic, and electrical components.

Draining the Process Water Circuit

Maintenance Schedule

Schedule of routine checks for control panel, temperatures, filters, refrigerant circuit, and fans.

TROUBLESHOOTING

High Water Outlet Temperature

Troubleshooting for high water outlet temperature, including causes like thermal load and ambient temp.

Insufficient Pump Pressure Head

Troubleshooting for low water pressure at pump outlet, covering flow rate and filter issues.

Water Differential Pressure Switch Alarm

Troubleshooting for AEFL alarm, including clogged filters, pump rotation, and bleeding issues.

High Pressure Switch Trip

Troubleshooting for HP trip alarms (b(n)HP), including fan issues, ambient temp, and recirculation.

High Pressure;Compressor Trip (iC 640-780)

Troubleshooting for HP trip (b(n)HP) and compressor protection trips in iC 640-780 models.

Low Pressure Switch Trip

Troubleshooting for LP trip alarms (b(n)HP), including refrigerant charge and filter issues.

Compressor Protection Trips (iC 215-540)

Troubleshooting for compressor protection trips (C(n)tr), including thermal load and refrigerant.

Display Blank; No LEDs

Troubleshooting for a blank display and no LEDs when the main switch is ON.

Probe Alarms AP1-AP6

Troubleshooting for probe alarms (AP1-AP6), checking connections and cable integrity.

Low Water Outlet Temperature Alarm

Troubleshooting for low water outlet temperature (b(n)Ac), including flow rate and setpoint issues.

Pump Thermal Cutout Alarm

Troubleshooting for pump thermal cutout alarms (AtE1/AtE2) due to high flow or obstructed grilles.

RISK ANALYSIS: RESIDUAL RISK

Electrical Hazards

Inadvertent Start-up and Overtravel Risks

ICS iC 770 Specifications

General IconGeneral
BrandICS
ModeliC 770
CategoryChiller
LanguageEnglish

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