2.5ELECTRICAL CONNECTION
A. NEMA 1 MODELS
1.Electrical power supply requirements for Nema 1 units (figure 2.5A) are identified on the equipment data plate. Verify that available voltage supply is the same as the unit’s voltage requirements. WARNING: Do not connect the unit to a voltage supply source not equal to the unit’s voltage requirements as specified on the unit’s data plate. Use of incorrect voltage will void the unit’s warranty and cause a significant hazard that may result in serious personal injury and unit damage.
2.A factory supplied, four conductor cable is installed for connection to a customer supplied fused power disconnect device. The fused disconnect device shall be sized and installed according to the unit’s power supply requirements and local electrical codes.
C.CONTROL CIRCUIT WIRING
1.The unit’s supplied control circuit is indicated in the electrical diagrams. The control circuit is supplied by the factory installed transformer.
D.GENERAL
1.Make certain all ground connections to the unit are properly affixed.
2.Make certain power conductor, disconnect device, and fusing are properly sized according to the unit’s power supply requirements.
3.Make certain all electrical connections are tightly affixed. Any loose wiring connections must be tighten before engaging the power supply.
4.Make certain no moisture or standing water is present inside the electrical cabinet.
| Microprocessor | Transformer | Illuminated on/off | Motor starter |
|
| controller | switch |
| ||
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Page: 12 | VL Series Portable Chillers, 0.25 to 1.5 Tons | UGH020/0301 |
