Manitowoc I0320 Especificaciones descargar pdf (Pagina 217)

Part Number STH025 2/14 217

9. Follow the normal evacuation procedure, except

replace the evacuation step with the following:

A. Pull vacuum to 1000 microns. Break the

vacuum with dry nitrogen and sweep the

system. Pressurize to a minimum of 5 psig

(35 kPa,.35 bar).

B. Change the vacuum pump oil.

C. Pull vacuum to 500 microns. Break the

vacuum with dry nitrogen and sweep the

system. Pressurize to a minimum of 5 psig

(35 kPa,.35 bar).

D. Change the vacuum pump oil.

E. Pull vacuum to 500 microns. Run the vacuum

pump for 1/2 hour on self-contained models,

1 hour on remotes.

NOTE: You may perform a standing vacuum test to

make a preliminary leak check. You should use an

electronic leak detector after system charging to be

sure there are no leaks.

10. Charge the system with the proper refrigerant to

the nameplate charge.

11. Operate the ice machine for one hour. Then,

check the pressure drop across the suction line

filter-drier.

A. If the pressure drop is less than 1 psig

(7 kPa,.7 bar), the filter-drier should be

adequate for complete cleanup.

B. If the pressure drop exceeds 1 psig (7 kPa,.7

bar), change the suction line filter-drier and

the liquid line drier. Repeat until the pressure

drop is acceptable.

12. Operate the ice machine for 48-72 hours. Then

remove the suction line drier and change the

liquid line drier.

13. Follow normal evacuation procedures.

Important

Dry nitrogen is recommended for this procedure.

This will prevent CFC release.

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Manitowoc I0320 Especificaciones Pagina 217