TurboChill™
Chillers
19
TurboChill Water Cooled Technical Manual 9216326 V1.10.0 06_2017
Electrical
An electrical power and controls panel is situated at the front of the unit and contains:
●
Individual mains power isolator for the compressor
●
Emergency interlock isolator handle
●
Fully accessible controls compartment, allowing adjustment of control set points whilst the unit is operational
●
Circuit breakers for protection of all major unit components
● Phase rotation relay incorporating phase loss protection (not fitted if energy manager selected)
The electrical power and control panel is wired to the latest European standards and codes of practice. Mains supply is
3 phase, a neutral is only required for permanent supply (L4). Separate 230V permanent supply (L4) is required for the
controls and safety features.
TurboChill units are designed for indoor use only and must not be installed outside.
IMPORTANT
Electronic Soft Start
The electronic soft start enables the chiller compressor motor to be ramped to speed with the minimum full load current.
Further benefits include removal of nuisance tripping, supply voltage dips and motor overheating. Main Electric Isolator
To ensure complete unit isolation of the electrical panel during adjustment and maintenance a door interlocking isolator
is provided as standard.
Ultracap UPS
Unit controls are maintained by an Ultracap. The Ultracap module is an external backup device for the controller. The
module guarantees temporary power to the controller in the event of power failures and allows for enough time to keep
the controller running with time to change power supplies.
The Ultra Capacitors are used to maintain the controller’s main functions, to close the electronic valves in the event of
mains power failures. Power will be maintained until mains power is reinstated for a maximum period of 10 minutes.
The module is made using Ultracap storage capacitors (EDLC = Electric Double Layer Capacitor), which are recharged
independently by the module.
These ensure reliability in terms of much longer component life than a module made with lead batteries: the life of the
Ultracap module is at least 10 years.
Phase Rotation Relay
A phase sequence relay shall be fitted for units containing 3 phase scroll compressors, to prevent possible damage by
running the compressor in the wrong direction.
Energy Manager
Analysis of system energy consumption can be monitored via a dedicated LCD display. Unit parameters can be adjusted
via the unit microprocessor control to affect energy usage in line with the system need.
Introduction
