Contractor Tip Cards
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Tip 1: R-12 and Polyol Ester Oil

Tip 2: Single Phase Burns

Tip 3: Compressor Overheat

Tip 4: Service Valves

Tip 5: TXV Selection

Tip 6: Suction Accumulators

Tip 7: Expansion Valves

Tip 8: Sensing Bulb Location

Tip 9: Evacuation

Tip 10: Evaporator vs. System Superheat

Tip 11: Flooding

Tip 12: Migration

Tip 13: Oil Separators

Tip 14: Pump Down Systems

Tip 15: Subcooling

Tip 16: Superheat

Tip 17: Alternative Refrigerants and Oils

Tip 18: Bi-Flow TXV

Tip 19: Checking Power Elements

Tip 20: Global Warming

Tip 21: Internally Or Externally Equalized

Tip 22: Liquid-to-Suction Heat Exchangers

Tip 23: Moisture Indicators and Sight Glasses

Tip 24: Maximum Operating Pressure (MOP)

Tip 25: System Clean-Up After Motor Burn

Tip 26: TXVs and SEER

Tip 27: Solenoid Valves

Tip 28 - Metering Device

Tip 29 - Scroll Compressor Safety Controls

Tip 30 - Refrigerants

Tip 31 - Single Phase Motor Teminal ID

Tip 32 - Refrigerant Floodback

Tip 33 - Flooded Starts

Tip 34 - Slugging

Tip 35 - High Discharge Temperature

Tip 36 - Loss of Oil

Tip 37 - Cranckcase Pressure

Tip 38 - Refrigerant Distributors

Tip 39 - Refrigeration Receivers

Tip 40 - Pressure Controls