Hoshizaki MRH KM-901MAH User Manual

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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.
• To reduce the risk of electric shock, do not touch the control switch or service 

switch with damp hands

• Before servicing: Move the control switch to the "OFF" position and turn off the 

power supply. Place the disconnect in the "OFF" position.  
Lockout/Tagout to prevent the power supply from being turned back on 
inadvertently.

• 

CHOKING HAZARD: Ensure all components, fasteners, and thumbscrews are 

securely in place after any maintenance is done to the icemaker. Make sure that 
none have fallen into the dispenser unit/ice storage bin.

Daily

Scoop

Clean the ice scoop using a neutral cleaner. Rinse thoroughly after 
cleaning.

Bi-Weekly Air Filters

Inspect. Wash with warm water and neutral cleaner if dirty.

Monthly

External Water 
Filters

Check for proper pressure and change if necessary.

Icemaker Exterior 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 cleanser.

Underside of 
Icemaker and Top 
Kits; Bin Door and 
Snout

Wipe down with a clean cloth and warm water.

Yearly

Icemaker and 
Dispenser Unit/Ice 
Storage Bin Liner

Clean and sanitize per the cleaning and sanitizing instructions provided 
in the instruction manual or maintenance label on the icemaker. 

Water Supply Inlet Close the icemaker water supply line shut-off valve and drain the water 

system. Clean the water supply inlet screen.

Condenser

Inspect. Clean if necessary by using a brush or vacuum cleaner. More 
frequent cleaning may be required depending on location.

Water Hoses

Inspect the water hoses and clean/replace if necessary. 

As Needed Marine Model 

Condenser

If contaminated seawater enters the system, flush with clean seawater or 
fresh water as soon as possible to minimize damage to the condenser.