Change the vacuum pump oil | Manitowoc Ice STH003 specs

SEVERE SYSTEM CONTAMINATION CLEANUP PROCEDURE

1.Remove the refrigerant charge.

2.Remove the compressor.

3.Wipe away any burnout deposits from suction and discharge lines at compressor.

4.Sweep through the open system with dry nitrogen.

IMPORTANT

Refrigerant sweeps are not recommended, as they release CFC’s into the atmosphere.

5.Install a new compressor and new start components.

6.Install suction line filter-drier in front of compressor.

7.Install a new liquid line drier.

8.Follow the normal evacuation procedure, except replace the evacuation step with the following:

IMPORTANT

Dry nitrogen is recommended for this procedure. This will prevent CFC release.

e)Pull vacuum to 1000 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig.

g)Pull vacuum to 500 microns. Break the vacuum with dry nitrogen and sweep the system. Pressurize to a minimum of 5 psig.

h)Change the vacuum pump oil.

i)Pull vacuum to 500 microns. Run the vacuum pump for 1 hour additional hour.

Continued next page