Locating Refrigerant Leaks - Traulsen RBC100 Service Manual

9 TRAULSEN RBC50, RBC100 & RBC200 BLAST CHILLER BASIC SERVICE GUIDE

Locating Refrigerant Leaks

DISCONNECT THE ELECTRICAL POWER TO THE MACHINE AND
WARNING: THIS PROCEDURE REQUIRES THE USE OF REFRIGERANTS. BE
CERTAIN THE WORK AREA IS WELL VENTILATED. SAFETY GOGGLES AND
GLOVES SHALL BE WORN SINCE REFRIGERANTS MAY CAUSE INJURY TO THE SKIN.
1. Access the refrigeration system, recovering remaining refrigerant per EPA guidelines.
2. Connect the low (BLUE) side of gauge manifold to schrader valve..
3. Connect refrigerant bottle to center of gauge manifold and open valve on bottle to purge
hose to manifold gauge.
4. Open valve on low side of gauge manifold and charge system with a small amount of R-22
refrigerant (1-2 ounces).
5. Close bottle valve and gauge valve.
6. Disconnect refrigerant bottle and connect nitrogen bottle.
7. Set output valve on nitrogen bottle to equal the appropriate pressure, for the design rated
refrigerant at 100 degrees F on the P/T chart (see system data plate for design
refrigerant).
8. Open nitrogen bottle and gauge manifold valve (low side) and allow pressure to equalize.
9. Shut off both valves and disconnect the nitrogen bottle.
10. Using a leak detector, check for leaks at all tubing connections.
a) If any leaks are detected, repair leak and recheck for additional leaks.
b) If no leaks are discovered, evacuate system as per accepted industry procedures.
11. Install a permanent high side access port for future system diagnostics.
12. Charge the system and check for proper operation.
FOLLOW PROPER LOCKOUT/TAGOUT PROCEDURES.
WARNINGS