Lauda ULTRACOOL UC 50 User Manual

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ULTRACOOL

UC 8, UC 14, UC 24, UC 50, UC 65

DMI-0217-07

27/02/2020

Questions and Answers:

R
ruthvillarrealAug 7, 2025
What to do if my Lauda ULTRACOOL UC 50 shows an HP alarm due to a pressure switch?
- B
  Brittany AvilaAug 7, 2025
  If your Lauda Chiller displays an HP alarm related to the pressure switch, several factors could be the cause. First, ensure that the lateral panels of the housing are closed. Next, check for adequate airflow into the condenser, ensuring there is enough free space and cleaning the condenser if it's dirty. If the ambient temperature is too high, wait for it to decrease. Should the motor fan not be working (not turning when the chiller is running), or if you suspect a high-pressure switch failure, contact authorized technical service.
W
Wendy PotterAug 21, 2025
What to do if my Lauda ULTRACOOL UC 50 Chiller displays an alarm for freezing evaporating temperature?
- R
  Richard PageAug 22, 2025
  If your Lauda Chiller is showing an alarm related to the freezing evaporating temperature, it could be due to a few reasons. Start by checking the water circuit for any blockages and clean it. Replace the water filter element if needed. Also, check for any closed valves in the circuit, as this could cause freezing due to low ambient temperature. If the water tank temperature sensor is faulty, contact authorized technical service.

Lauda ULTRACOOL UC 50 Specifications

General

Pump Flow Rate	15 l/min
Pump Pressure	0.35 bar
Temperature Stability	±0.5°C
Temperature Range	-10°C to 40°C
Power Supply	230V; 50 Hz

Summary

WARNINGS

INTRODUCTION

SAFETY REGULATIONS

Operator must observe national and internal safety regulations during operation and maintenance.

INSTALLATION

SITE

WATER CONNECTION

ELECTRICAL CONNECTION

TERMINAL FUNCTIONS

STARTUP

OPERATING CONDITIONS

ETHYLENE GLYCOL ADJUSTMENT

CHILLER STARTUP

ELECTRICAL INTERVENTION SAFETY

UNIT STARTUP SEQUENCE

PUMP PRESSURE ADJUSTMENT

HIGH TEMPERATURE SAFETY

CHILLER CONTROLS

CONTROL AND MONITORING ELEMENTS

OPERATION

REMOTE ON/OFF AND DISPLAY OPERATION

How to turn the unit On/Off using remote signals and the display.

SETTING OUTLET TEMPERATURE

EMERGENCY STOP

ETHERNET CONFIGURATION

IP CONFIGURATION STEPS

WEBSERVER ACCESS

MAINTENANCE

BASIC MAINTENANCE

Routine maintenance tasks to be performed weekly, monthly, and yearly.

TROUBLESHOOTING

SAVING A LOG FILE IN CASE OF ALARM

Procedure to save log files to help diagnose alarm issues.

ALARMS AND WARNINGS LIST

COMPRESSOR AND CIRCUIT ALARMS

TANK LEVEL AND WATER LEAK ALARMS

PUMP OVERLOAD AND PHASE SEQUENCE ALARMS

CHILLED WATER HIGH TEMPERATURE ALARM

PROBE ERRORS AND MAINTENANCE REQUEST

TECHNICAL FEATURES

SPECIFICATIONS TABLE

ENERGY EFFICIENCY INFORMATION

ENERGY EFFICIENCY INFORMATION FOR UC 14

ENERGY EFFICIENCY INFORMATION FOR UC 24

ENERGY EFFICIENCY INFORMATION FOR UC 50

ENERGY EFFICIENCY INFORMATION FOR UC 65

ANNEXES

WATER QUALITY

Specifies required water quality parameters and limits to protect the unit.

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