Maintenance Schedule - Hoshizaki F-450MAH(-C) Instruction Manual

A. Maintenance Schedule
The maintenance schedule below is a guideline. More frequent maintenance may be
required depending on water quality, the appliance's environment, and local sanitation
regulations.
Frequency Area
Daily Scoop
Bi-Weekly Air Filters
Monthly External Water
Filters
Icemaker Exterior Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
Underside of
Icemaker and Top
Kits; Bin Door and
Snout
Every 6 Icemaker and
Months Dispenser Unit/Ice
Storage Bin
Evaporator
Condensate Drain
Pan and Gear
Motor Drain Pan
Icemaker and
Dispenser Unit/Ice
Storage Bin Drains
Extruding Head
Seal Bolts
Yearly Inlet Water Valve
and Drain Valve
Water Hoses
Condenser
Icemaker
Upper Bearing
(extruding head)
After Upper Bearing
3 Years, (extruding head);
then Yearly Lower Bearing
and O-Ring
(lower housing);
Mechanical
Seal; Evaporator
Cylinder; Auger

Maintenance Schedule

Task
Clean the ice scoop using a neutral cleaner. Rinse thoroughly after
cleaning.
Inspect. Wash with warm water and neutral cleaner if dirty.
Check for proper pressure and change if necessary.
cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust
colored spots) using a non-abrasive cleanser.
Wipe down with a clean cloth and warm water.
Clean and sanitize per the cleaning and sanitizing instructions provided in
this manual.
Wipe down with a clean cloth and warm water. Slowly pour one cup of
sanitizing solution (prepare as outlined in the sanitizing instructions in this
manual) into the evaporator condensate drain pan. Be careful not to overflow
the pan. The solution will flow down to the gear motor drain pan and out the
drain line to sanitize these areas. Repeat with a cup of clean water to rinse.
Check to make sure they are clear.
Inspect for leakage around seal bolts. Tighten (see torque values below) or
replace as necessary. Seal bolts must be replaced once removed because
seal material is one-time use only. If new seal bolts do not have preapplied
threadlocker, apply Loctite 243 or equivalent threadlocker to seal bolt
threads.
• Torque for F-1001 and Smaller: 11.1 ft-lb/15 N·m
• Torque for F-1500 and Larger: 25.8 ft-lb/35 N·m Tighten 2 times. Allow at
least 5 sec. in between each tightening.
Close the water supply line shut-off valve and drain the water system. Clean
the inlet water valve screen and clean and inspect the drain valve.
Inspect the water hoses and clean/replace if necessary.
Inspect. Clean if necessary by using a brush or vacuum cleaner.
Inspect for oil spots, loose components, fasteners, and wires.
Check for wear using .02" round stock or pin gauge. Replace both upper
bearing and lower bearing if wear exceeds factory recommendations. See
the Service Manual for details.
Inspect. Replace both upper bearing and lower bearing if wear exceeds
factory recommendations. Replace the mechanical seal if the seal's contact
surfaces are worn, cracked, or scratched. See the Service Manual for
details.
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