Hoshizaki KM-501MWH User Manual
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0) Evacuate the system, and charge it with refrigerant. For air-cooled and water-cooled
models, see the nameplate for the required refrigerant charge. For remote air-cooled
models, see the charge label in the machine compartment.
models, see the charge label in the machine compartment.
) Replace the removed parts in the reverse order of which they were removed.
) Replace the top insulation and the panels in their correct positions.
3) Turn on the power supply.
) Replace the top insulation and the panels in their correct positions.
3) Turn on the power supply.
H. Removal and Replacement of Water Regulating Valve -
Water Cooled Model Only
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.
Do not replace the drier until after all other repair or replacement has been
made.
) Turn off the power supply.
) Close the water supply line shut-off valve.
3) Remove the panels.
4) Recover the refrigerant and store it in an approved container.
5) Disconnect the capillary tube at the condenser outlet using brazing equipment.
6) Disconnect the flare-connections of the valve.
7) Remove the screws and the valve from the bracket.
8) Install the new valve, and braze the capillary tube.
9) Install the new drier.
) Close the water supply line shut-off valve.
3) Remove the panels.
4) Recover the refrigerant and store it in an approved container.
5) Disconnect the capillary tube at the condenser outlet using brazing equipment.
6) Disconnect the flare-connections of the valve.
7) Remove the screws and the valve from the bracket.
8) Install the new valve, and braze the capillary tube.
9) Install the new drier.
0) Check for leaks using nitrogen gas (40 PSIG) and soap bubbles.
) Evacuate the system, and charge it with refrigerant. See the nameplate for the required
) Evacuate the system, and charge it with refrigerant. See the nameplate for the required
refrigerant charge.
) Connect the flare-connections.
3) Open the water supply line shut-off valve.
4) Check for water leaks.
5) Replace the panels in their correct positions.
3) Open the water supply line shut-off valve.
4) Check for water leaks.
5) Replace the panels in their correct positions.
6) Turn on the power supply.
I. Adjustment of Water Regulating Valve - Water-Cooled Model Only
The water regulating valve (also called "water regulator") is factory-adjusted. No adjustment
is required under normal use. Adjust the water regulator, if necessary, using the following
procedures.
is required under normal use. Adjust the water regulator, if necessary, using the following
procedures.
) Prepare a thermometer to check the condenser drain temperature. Attach a pressure
gauge to the high-side line of the system.