Hoshizaki rh1-aac Zusätzliches Handbuch

5

Always install a new drier every time the sealed refrigeration system is opened. 
Do not replace the drier until after all other repair or replacement has been 
made. Install the new drier with the arrow on the drier in the direction of the 
refrigerant flow. 

1) Unplug the unit from the electrical outlet.
) Remove the panels and the top cover over the evaporator.
3) Recover the refrigerant and store it in an approved container.
4) Remove the insulation tubing, and disconnect the evaporator inlet and outlet tubing. 

Elevate the evaporator to avoid overheating the evaporator housing.

5) Place the new evaporator in position.
6) Remove the drier, then place the new drier in position. 
7) Check for leaks using nitrogen gas (140 PSIG) and soap bubbles.
8) Evacuate the system, and charge it with refrigerant. See the nameplate for the required 

refrigerant charge.

9) Replace the removed parts in the reverse order of which they were removed.

10) Replace the top cover and the panels in their correct positions.
11) Plug the unit back in.

In order to get a proper gasket fit, it is important not to stretch gasket material 
during assembly.

1) Remove old gasket by pulling it directly out of the vinyl gasket retainer. 
) Thoroughly clean the gasket area with mild soap and water prior to installing the new 

gasket. 

3) The new gasket should be installed by assembling it at the corners first, then working 

toward the center at the top, bottom and sides. 

4) The arrow-shaped portion of the gasket should be firmly seated in the retainer 

groove for proper assembly. This can be checked by lifting the edge of the gasket and 
observing the engagement.