ZET-KAR FS-399 Air Conditioner and Refrigerator System Flush Kit – Stainless Tank, with Pressure Gauge

ZET-KAR FS-399 is a professional flush kit used to blow old compressor oil, metal particles and contamination remaining in the circuit out with pressurized solvent before a compressor replacement or refrigerant conversion (retrofit) in air conditioning and refrigeration systems. When a burnt-out compressor is replaced, debris left in the system can soon cause the new compressor to fail as well; this kit lets you clean the circuit component by component. It comes with a stainless steel tank, a pressure gauge and a safety relief valve.

Clean Out Old Oil and Contamination Left in the System During Compressor Replacement

• Product Code / Model: BZD 139 / ZET-KAR FS-399 (Taiwanese design)
• Kit Contents: Stainless steel flush tank (canister) · flush gun · connection hose · tank adapter · seal (O-ring) · cone nozzle
• Tank Body: Stainless steel, with carrying/hanging hook
• Pressure Gauge: Gauge on the tank — you monitor the flushing pressure visually
• Safety Relief Valve: Opens at 200 PSI (safety against overpressure)
• Maximum Working Pressure: Do not exceed 150 PSI (working limit stated on the label)
• Compatibility: Designed to work with light weight A/C flush solvents
• Applications: Automotive air conditioners, split/commercial air conditioning systems, refrigerator and refrigeration circuits

FS-399 Kit Contents, Technical Values and Usage Warnings

• Flush solvent (chemical) is NOT included in the kit; the flushing fluid to be used in the circuit is supplied separately. The tank is designed for you to fill with solvent and pressurize.
• Use only on a circuit from which the refrigerant has been removed. Before starting, recover the refrigerant in accordance with regulations; do not flush while there is refrigerant in the system.
• Wear safety glasses and gloves. Pressurized solvent can spray back; never point the gun at yourself or others.
• Do not pressurize the tank until you are ready to flush, shut off the air supply before adding more solvent and never leave a pressurized tank unattended.
• Remove the orifice tube and the expansion valve from the circuit. If they are not removed during flushing, debris will clog them; in addition, the filter drier is always replaced with a new one — it is not flushed.
• Flush the components one by one (evaporator, condenser, hoses) by isolating them; the compressor and accumulator/liquid receiver are not flushed and are replaced if necessary.
• After flushing, blow out the circuit with dry nitrogen or compressed air to remove all solvent residue, then apply a deep vacuum. Remaining solvent mixes with the new oil and damages the compressor.