CyberChiller Series Installation, Operation & Maintenance Manual

1.2.3General Design

The CyberChiller is divided into 3 areas; a pump section, a refrigeration section and an electrical section. The housing is a frame type construction. Figure 1 depicts the internal layout of the unit and the location of the major components.

ELECTRIC BOX

 

AIR VENT

 

AIR SEPARATOR

 

EXPANSION TANK

 

(BEHIND PUMP #2)

HEAT EXCHANGERS

PUMP #2

(EVAPORATORS)

(OPTIONAL)

HEAT EXCHANGERS

 

(CONDENSERS- NOTE 1)

 

RECEIVERS

 

(BEHIND COMPRESSORS)

PUMP #1

 

SCROLL COMPRESSORS

 

NOTE 1: PROVIDED WITH

WATER/GLYCOL COOLED UNITS.

Figure 1- Typical Layout

1.2.3.1Electric Box Access

The electrical components are protected behind dual hinged access doors located on the left side of the unit. The access doors are safety interlocked with the service disconnect switch preventing the doors from opening when the switch in the “On” position. The switch must be turned “Off” to gain access to the electrical components.

1.2.3.2Circuit Breakers/ Motor Start Protectors

Individual overload protection is provided by circuit breaker(s) and motor start protectors. These switches must be manually re-set once the overload condition is cleared.

1.2.3.3Pumps

Multi-stage centrifugal pumps are located in the right side of the unit to circulate the coolant through the system. A hinged access door is located on the right side of the unit. This door may be opened to gain access to the pump section.

1.2.3.4Expansion Tank

An expansion tank has been provided on the chilled water side of the unit to compensate for thermal expansion of the coolant. An air vent is mounted on top of the fluid separator.

1.2.3.5Heat Exchangers

Constructed of 316 stainless steel with brazed plate fin construction, the evaporator heat exchangers are for the exchange of heat from the process water/glycol coolant to the refrigerant.

1.2.3.6Receivers

Receivers are provided for each refrigeration circuit for storage of excess refrigerant in the refrigeration cycle.

1.2.3.7Compressors

The compressors used in this unit are scroll compressors mounted inside the unit on vibration absorbers to eliminate noise and vibration during operation. The scroll compressor is designed around two identical spirals or scrolls that, when inserted together, form crescent shaped pockets. During a compression

1-2

 

 

 

(©October, 2006)