Maintenance; Cleaning; Before Calling A Service Agent - Hoshizaki KM-40B Instruction Manual

III. MAINTENANCE

1. CLEANING

WARNING
1. Before carrying out any cleaning or maintenance operations,
unplug the icemaker from the electrical supply network.
2. Ask a trained service person to check and clean the condenser
at least once a year.
3. This appliance must not be cleaned by use of a water jet.
4. Do not use any alcohol for cleaning/sanitisation of the icemaker.
It may cause cracks on the plastic parts.
5. Do not remove the top panel and louver. Only a qualified service
person should remove them.
6. To prevent possible damage, do not clean the plastic parts with
water above 40°C or in a dishwasher.
[1] Exterior
Wipe the exterior at least once per week with a clean, soft cloth. Use a
damp cloth containing a neutral cleaner to wipe off grease or dirt.
[2] Scoop and Bin Door Grip Cleaning/Sanitisation (Daily)
1) Either mix 3 litres of water with 11 ml of 5.25% sodium hypochlorite
solution in a suitable container, or the recommended Hoshizaki
sanitiser as directed.
2) Soak the scoop in the solution for more than 3 minutes. Rinse
thoroughly, and shake to remove surplus liquid.
Note: Using a cloth to dry may re-contaminate.
3) Use a neutral cleaner to wash the bin door grip. Rinse thoroughly.
4) Soak a clean cloth with the sanitising solution, and wipe the grip. Use
fresh water and a clean cloth to rinse/dry.
[3] Storage Bin Interior Cleaning/Sanitisation (Weekly)
1) Open the storage bin door, and remove all ice.
2) Wash the bin liner with a neutral non-abrasive cleaner. Rinse
thoroughly.
3) Soak a clean cloth with the neutral cleaner, and wipe the door inner
surface. Wipe off the cleaner with a clean damp cloth.
4) Either mix 3 litres of water with 11 ml of 5.25% sodium hypochlorite
solution in a suitable container or the recommended Hoshizaki
sanitiser as directed.
5) Soak a clean sponge or cloth with the solution, and wipe the bin liner
and bin door.
6) Rinse thoroughly with fresh water and a clean cloth to wipe off the
solution. Close the bin door.
Note: Some solutions may cause damage to the bin liner surfaces or
corrosion on the metal parts. Always rinse the sanitiser unless
directed otherwise by Hoshizaki guidelines.
[4] Air Filter
Plastic mesh air filters remove dirt or dust from the air, and keep the
condenser from getting clogged. If the filters get clogged, the icemaker's
performance will be reduced. Remove and clean the air filters at least
twice per month:
1) Remove the air filter.
Note: Do not put your hand inside the machine compartment.
2) Clean the air filter by using a vacuum cleaner. When severely clogged,
use warm water and a neutral cleaner to wash the air filter.
3) Rinse and dry the air filter thoroughly, and place it in position.
[5] Icemaking Water System
To keep the icemaker hygienic, periodic cleaning of the icemaking water
system is recommended. Always ask a trained service person to clean
the water system.
Note: The user is allowed to move the control switch to the "ICE" or
"OFF" position. Only a qualified service person should move it to
the "WASH" position to flush the icemaking water system.
Front View with Louver Removed
Control Switch

2. BEFORE CALLING A SERVICE AGENT

Do not damage the refrigerant circuit.
If the icemaker does not work properly or does not work at all, before
calling for service, check that:
* The power is supplied to the unit.
* The control switch is in the "ICE" position.
* The water is turned on.
* The air filter is clean.
For further assistance or advice, contact your local Hoshizaki service
agent.
No. of Beeps
(every 3 sec.)
1 High Evaporator Temp. (temperature > 53°C)
Check for harvest problem (stuck HGV or relay), hot
water entering the unit, or shorted thermistor.
To reset: Press reset switch while overheat thermistor detects
temp below 51°C.
2 Harvest Backup Timer (harvest > 20min. for two
cycles in a row)
Check for open thermistor, HGV not opening, TXV
leaking by, low charge, inefficient Comp.
To reset: Press reset switch.
5
ENGLISH
Fig. 6
WARNING
Type of Alarm