Hoshizaki fh1-ssb 補足マニュアル

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D. Removal and Replacement of Evaporator
IMPORTANT
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 evaporator to avoid overheating of 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.