Keeprite Refrigiration Condensing Unit KEHA008L6

Use larger size hoses or copper lines

Perform oil change on vacuum pump at the beginning of each evacuation

Check vacuum pump, manifold, and hose assembly for ability to pull below 250 microns

Evacuate system from access points

Ensure all solenoids in the system are open (energized) during evacuation

Ensure all ball valves in the system are open and all service valves are appropriately cracked or back-seated during evacuation

Disconnect and lock off the main power supply to avoid accidental start up of the equipment.

Check electrical components and tighten any loose connections.

Check all wiring and electrical insulators.

Check contactors to ensure proper operation and contact point for wear.

Ensure fan blades are tight and all mounting bolts are tight.

IMPORTANT: All system piping, including the evaporator and accessories should be thoroughly tested for leaks prior to start up and charging.

Pressurize the system to a maximum of 150 psig (1136 kPa) with dry nitrogen.

Is the system free of major leaks?

Detailed Leak Check for A1 Refrigerants

Discharge the initial dry nitrogen charge and add refrigerant to raise the system pressure up to 10 psig (170 kPa).

Add dry nitrogen to increase the system pressure to a maximum of 150 psig (1136 kPa).

Use an electronic leak detector to check for leaks.

Hold the pressure for a minimum of 12 hours.