Over-cycling said to harm HVAC equipment

Journal Article · Mon Nov 08 04:00:00 EST 1982 · Energy User News; (United States)

OSTI ID:6582125

Galvin, C

Some manufacturers are voiding warranties because of damage to heating, ventilating, and air conditioning (HVAC) motors and compressors when users try to conserve energy with excessive duty cycling. The National Electrical Manufacturers Association (NEMA) will release guidelines for duty cycling next spring to help users plan cycling by motor size and load variation. Motors that fail because of excessive cycling often reveal burned-out relays, but compressors can be more difficult to diagnose. Other problems include burned-out air-handling motors and compressors, broken belts, starting failures, and slugging of thhe refrigerant. Manufacturers continue their liability for users who follow their instructions. (DCK)

• OSTI ID: 6582125
• Journal Information: Energy User News; (United States), Journal Name: Energy User News; (United States) Vol. 7:45; ISSN EUSND
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
320100* -- Energy Conservation
Consumption
& Utilization-- Buildings
COMPRESSORS
DAMAGE
ELECTRIC MOTORS
ENERGY CONSERVATION
ENERGY SYSTEMS
LIABILITIES
LOAD MANAGEMENT
MANAGEMENT
MOTORS
SPACE HVAC SYSTEMS