Maintenance - Hoshizaki DCM-270BAH Service Manual

V. Maintenance
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.
• Only qualified service technicians should service the appliance.
• Move the control switch and power switch to the "OFF" positions, then turn off the
power supply before servicing. Lockout/Tagout to prevent the power supply from
being turned back on inadvertently.
Frequency Area
Every 2 Air Filter
Weeks
Monthly External Water
Filters
Appliance Exterior
Every 6 Icemaker and
Months Storage Bin
Evaporator
Condensate Drain
Pan and Gear
Motor Drain Pan
Icemaker, Storage
Bin, and Drip Tray
Drains
Yearly Inlet Water Valve
and Drain Valve
Water Hoses
Condenser
Appliance
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
WARNING
Maintenance Schedule
Task
Inspect. Wash with warm water and neutral cleaner if dirty.
Check for proper pressure and change if necessary.
Wipe down with a clean, soft cloth. Use a damp cloth containing a neutral
cleaner to wipe off oil or dirt build up. Clean any chlorine staining (rust
colored spots) using a non-abrasive cleaner.
Clean and sanitize per the cleaning and sanitizing instructions provided in
the instruction manual or maintenance label on the appliance.
Wipe down with a clean cloth and warm water. Dilute 0.82 fl. oz. (25 ml) of a
5.25% sodium hypochlorite solution (chlorine bleach) with 1.6 gal. (6.0 l) of
warm water. Slowly pour one cup of sanitizing solution into the evaporator
condensate drain pan. Be careful not to overflow the pan. This 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.
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
"IV.C.1. Upper Bearing Wear Check".
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.
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