Airedale DeltaChill FreeCool 110kW - 1080kW - Manual (Page 18)

Chillers
18
Introduction
Chiller Technical Manual 7267818 V1.4.0_04_2014
DeltaChill™ Air Cooled and FreeCool
Electrical
Electrical Overview
A weatherproof electrical power and controls panel shall be situated at the end of the unit and contains:
• Individual mains power isolation for each circuits compressors
• Separate electrical isolation for fans
• Dedicated bus-bar chamber for connection of incoming 3 phase and earth mains power supply
• Emergency stop fitted to controls compartment door
• Separate, fully accessible controls compartment allowing adjustment of set points whilst the unit is operational
• Circuit breakers for protection of all major unit components
• Phase rotation relay incorporating phase loss protection
• The electrical power and control panel is wired to the latest European standards and codes of practice
• Mains supply is 3 phase and a neutral is not required, refer to interconnecting wiring.
• Separate 230V 1ph 50Hz permanent supply is required for the controls and safety features. Isolator allows for a
maximum cable size of 10 mm
• Electrical terminals for external evaporator pipe work trace heating (230V / 500 Watt) are provided. The external
trace heating is fitted by others
Pumps
Circuit 3
Compressors
Bus-bar Chamber
Fans
Power Factor
Correction
Circuit 1
Compressors
Panel Ventilation
Controls
Circuit 2
Compressors
Location of Electrical components within the chiller.