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SWEEP CHARGE PROCEDURE Page 1 - 5. SWEEP CHARGE EQUIPMENT & SAFETY TANK OF LIQUID REFRIGERANT DO NOT: Drop or handle tank roughly Tamper with the safety.

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Presentation on theme: "SWEEP CHARGE PROCEDURE Page 1 - 5. SWEEP CHARGE EQUIPMENT & SAFETY TANK OF LIQUID REFRIGERANT DO NOT: Drop or handle tank roughly Tamper with the safety."— Presentation transcript:

1 SWEEP CHARGE PROCEDURE Page 1 - 5

2 SWEEP CHARGE EQUIPMENT & SAFETY TANK OF LIQUID REFRIGERANT DO NOT: Drop or handle tank roughly Tamper with the safety valve Store the tank in direct sunlight or in a damp location Heat the tank above 125 degrees Heat the tank with a torch Refill the tank CHARGING SCALE Used to measure refrigerant charge CHARGING HOSE With ball type hand valve Should have low-lose adaptor

3 SWEEP CHARGE EQUIPMENT & SAFETY PURGING HOSE Used to purge sealed systems Should have low-loss adaptors For purging non-operating systems CLAMP ON ACCESS VALVE Used to access the sealed system for purging of the system PROCESS TUBE ADAPTOR KIT Used to attach hand valves to various sizes of tubing LEAK DETECTION METHODS Bubble Solution Electronic Leak Detector

4 SWEEP CHARGE EQUIPMENT & SAFETY SWAGING KIT Used to flare tubing of the system HEAT GUN Used to heat a non-operating compressor Used to heat evaporator Used to heat refrigerant tank BRAZING EQUIPMENT Oxy-Acetylene Double tip torch BRAZING ALLOYS/SUPPLIES 15% Silfos 45% Silver Solder Flux

5 SWEEP CHARGE EQUIPMENT & SAFETY RECOVERY BAG Mark bag with type of refrigerant Never mix refrigerants Leave purge hose hooked to bag Fill & empty no more than 4 times Treat the recovery bag with care Holds 24 oz. of R12 or R500 Holds 20 oz. Of R22 or R134a DO NOT OVER FILL THE BAG

6 SWEEP CHARGE EQUIPMENT & SAFETY STRIKER, TUBING CUTTER INSPECTION MIRROR, STEEL BRUSH, TRIANGULAR FILE HEAT TRAP PASTE Protects components or areas that should not be heated REFRIGERATION SANDING CLOTH TEFLON TAPE TUBING BENDER

7 SWEEP CHARGE IN ACTION R-12, R-22 or R134a

8 SWEEP CHARGE PROCEDURE Preparing the work area

9 ATTACHING A TEMPORARY ACCESS VALVE (R12 & R134a SYSTEMS)

10 PURGING THE SEALED SYSTEM WITH AN OPERATING COMPRESSOR WARM EVAPORATOR CONNECT BAG & HOSE TO DRIER WITH TEMPORARY ACCESS VALVE START COMPRESSOR RUN FOR 8 MINS. After 8 mins. remove hose & shut down compressor MAKE THE REPAIRS

11 PURGING THE SEALED SYSTEM WITH A NON-OPERATING COMPRESSOR WARM EVAPORATOR CONNECT BAG & HOSE TO HIGH SIDE & LOW SIDE WITH TEMPORARY ACCESS VALVE PURGE FOR 15 MINS. WHILE HEATING THE COMPRESSOR AFTER 12 MINS. BANG COMPRESSOR 3 OR 4 TIMES CHECK BAG FOR CONTAMINATION After 15 mins. remove hoses & MAKE THE REPAIRS

12 REPLACING THE DRIER AND RELATED COMPONENTS CUT INLET

13 BACK FLUSHING THE SYSTEM Page Un-braze and isolate high-side components that will be back flushed. Remove filter-drier from system.

14 SWEEP CHARGE PROCEDURE Special Procedure Note: Remove Valve Core When Heating Filter Drier

15 CHARGING THE SEALED SYSTEM (Refrigerators, Freezers & Under-Counter Ice Makers) Sweeping & Leak Check HEAT TANK CONNECT TANK & HAND VALVE ZERO SCALE SLOWLY ADD 4 OZ OF REFRIGERANT CHECK FOR LEAKS START THE COMPRESSOR SWEEP FOR 3 MINS CONNECT RECOVERY BAG PURGE FOR 5MINS. Never over 125 degrees

16 CHARGING THE SEALED SYSTEM (Refrigerators, Freezers & Under-Counter Ice Makers) Final Charging HEAT TANK CONNECT TANK & HAND VALVE SLOWLY ADD SPECIFIED CHARGE REMOVE HAND VALVE CLOSE REFRIGERANT TANK WRAP TEFLON TAPE TO ACCESS VALVE Never over 125 degrees

17 Good for all products containing Five pounds of refrigerant or less Covers all of Whirlpool’s refrigeration products Open book NON proctored test with a passing score of 84% Can be done online or by mail from – Qwik Products online or by mail $ – Narda by mail only – $35.00 EPA Type 1 Certification Information

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