Maintenance And Cleaning Instructions; Extruding Head, Housing Bearing, Auger Bearing; Mechanical Seal - Hoshizaki FM-481AGE Service Manual

IV. MAINTENANCE AND CLEANING INSTRUCTIONS IV. MAINTENANCE AND CLEANING INSTRUCTIONS
1. This icemaker must be maintained individually, referring to the instruction 1. This icemaker must be maintained individually, referring to the instruction
manual and labels provided with the icemaker. manual and labels provided with the icemaker.
2. To have the optimum performance of this icemaker, the following consumable 2. To have the optimum performance of this icemaker, the following consumable
parts need periodical inspection, maintenance and replacement: parts need periodical inspection, maintenance and replacement:
These parts should be inspected at least once a year or every 10,000 hours These parts should be inspected at least once a year or every 10,000 hours
of operation. Their service life ultimately depends on water quality and of operation. Their service life ultimately depends on water quality and
environment, therefore more frequent inspection and maintenance may be environment, therefore more frequent inspection and maintenance may be
required. required.

1. EXTRUDING HEAD, HOUSING BEARING, AUGER BEARING

1. EXTRUDING HEAD, HOUSING BEARING, AUGER BEARING
These parts should be replaced if a diametrical gap of more than 0.5 mm is found when at These parts should be replaced if a diametrical gap of more than 0.5 mm is found when at
least three spots are checked by changing the direction of the Auger on each Bearing. least three spots are checked by changing the direction of the Auger on each Bearing.
It depends on the water quality and conditions, but normally the Bearings should be checked It depends on the water quality and conditions, but normally the Bearings should be checked
for wear after a total of 8,000 - 10,000 hour operation from installation date. for wear after a total of 8,000 - 10,000 hour operation from installation date.
Note: The clearance between the Auger blades and the Evaporator interior is 0.4 - 0.5 mm. Note: The clearance between the Auger blades and the Evaporator interior is 0.4 - 0.5 mm.
If the Bearings and rotating parts are worn out to create a larger clearance, the If the Bearings and rotating parts are worn out to create a larger clearance, the
Evaporator interior may be damaged. (The diameters differ by 0.8 - 1.0 mm.) Evaporator interior may be damaged. (The diameters differ by 0.8 - 1.0 mm.)
If the Auger surfaces against which the Bearings contact are no longer smooth or If the Auger surfaces against which the Bearings contact are no longer smooth or
show any burrs or abrasions during the above inspection, replace the auger. show any burrs or abrasions during the above inspection, replace the auger.

2. MECHANICAL SEAL

2. MECHANICAL SEAL
The Mechanical Seal prevents water leaks from between the Auger and the Housing Bearing The Mechanical Seal prevents water leaks from between the Auger and the Housing Bearing
and gradually wears out to reduce its watertightness. Check the amount of water leakage and gradually wears out to reduce its watertightness. Check the amount of water leakage
from the Drain Pipe located at the side of the Gear Case to determine the necessity of from the Drain Pipe located at the side of the Gear Case to determine the necessity of
replacement. replacement.
Total operation time Total operation time
3,000 hours 3,000 hours
10,000 hours 10,000 hours
Note: The water leakage will exceed the above amount with scale/dirt build up or damage on Note: The water leakage will exceed the above amount with scale/dirt build up or damage on
the mating surface. Replace the Mechanical Seal when the water leakage exceeds the mating surface. Replace the Mechanical Seal when the water leakage exceeds
0.5 mL/h. 0.5 mL/h.
E2AH5820209 E2AH5820209
IMPORTANT IMPORTANT
Extruding Head (Top Bearing) Extruding Head (Top Bearing)
Housing (Lower Bearing) Housing (Lower Bearing)
Mechanical Seal Mechanical Seal
Water leakage Water leakage
0.1 mL/h 0.1 mL/h
0.5 mL/h 0.5 mL/h
27 27