2. EVAPORATOR IS FROZEN UP

PROBLEM

POSSIBLE CAUSE

 

REMEDY

[1] Freeze cycle

a) Float Switch

1.

Leads short-circuit or

1.

Check and replace.

time is too

 

 

defective switch.

 

 

long.

 

2.

Float does not move freely.

2.

Clean or replace.

 

 

b) Water Solenoid

1.

Diaphragm does not close.

1.

Check for water leaks

 

 

Valve

 

 

 

with icemaker off.

 

 

c) Controller Board

1. Defective.

1.

See “II.2[e] CHECKING

 

 

 

 

 

 

CONTROLLER BOARD.”

[2] All ice formed

a) Evaporator

1.

Scaled up.

1.

Clean.

on Evaporator

b) Water Supply Line

1.

Water pressure too low.

1.

Check and get

does not fall

 

 

 

 

recommended pressure.

into bin in

c) Water Solenoid

1.

Dirty mesh filter or orifice.

1.

Clean.

harvest cycle.

Valve

2.

Diaphragm does not close.

2.

Check for water leaks

 

 

 

 

 

 

with icemaker off.

 

 

d) Ambient and/or

1.

Too cool.

1. Increase temperature.

 

 

water temperature

 

 

 

 

 

 

e) Thermistor

1.

Out of position or loose

1.

See “V. 11. REMOVAL

 

 

 

 

attachment.

 

AND REPLACEMENT OF

 

 

 

 

 

 

THERMISTOR.”

 

 

f) Controller Board

1.

Defrost Timer is set too

1.

Adjust longer, referring

 

 

 

 

short.

 

to “II. 2. [d] CONTROLS

 

 

 

 

 

 

AND ADJUSTMENT, 2)

 

 

 

 

 

 

Defrost Timer.”

 

 

 

2. Defective.

2.

See “II. 2.[e] CHECKING

 

 

 

 

 

 

CONTROLLER BOARD.”

[3] Others

a) Spray Tube

1. Clogged.

1. Clean.

 

 

 

2.

Out of position.

2.

Place in position.

 

 

b) Water System

1.

Dirty.

1.

Clean.

 

 

c) Refrigerant

1. Undercharged.

1.

Check for leaks and

 

 

 

 

 

 

recharge.

 

 

d) Expansion Valve

1.

Bulb out of position or

1.

Place in position.

 

 

 

 

loose attachment.

 

 

 

 

 

2. Defective.

2.

Replace.

 

 

e) Hot Gas Solenoid

1. Coil winding opened.

1. Replace.

 

 

Valve

2.

Plunger does not move.

2. Replace.

 

 

 

3.

Wiring to Hot Gas Valve.

3.

Check for loose

 

 

 

 

 

 

connection or open, and

 

 

 

 

 

 

replace.

 

 

 

 

 

 

 

3. LOW ICE PRODUCTION

PROBLEM

POSSIBLE CAUSE

REMEDY

[1]

Freeze cycle

a) See chart 1 - [3], and check dirty Air Filter or Condenser, ambient or water

 

time is long.

temperature, water pressure, Water Regulator or refrigerant charge.

 

 

b) See chart 2 - [1], and check Float Switch, Water Solenoid Valve or Controller

 

 

Board.

 

[2]

Harvest cycle

a) See chart 2 - [2], and check Controller Board, Thermistor, Evaporator, ambient

 

time is long

and/or water temperature, water supply line, Water Solenoid Valve.

 

 

 

 

87

Page 86 Page 88
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Image 87
Hoshizaki KML F SERIES, KML H SERIES service manual Evaporator is Frozen UP, LOW ICE Production
Page 86 Page 88

KML "F" SERIES, KML "H" SERIES specifications

The Hoshizaki KML "H" Series and KML "F" Series are state-of-the-art commercial ice machines designed to meet the diverse needs of the foodservice industry. Renowned for their reliability, efficiency, and innovative technology, these ice machines are perfect for restaurants, bars, and hotels seeking high-quality ice production.

The KML "H" Series focuses on producing crescent cubed ice, a preferred choice for many establishments due to its slow melting rate and ability to chill beverages effectively. One of the main features of the "H" Series is the ice-making process, which utilizes advanced technology to ensure a quick production cycle. The machines come with a variety of capacities to suit different business sizes, ranging from small-scale operations to large commercial needs.

The KML "F" Series, on the other hand, is designed to produce flaky ice, which is ideal for display in seafood and salad bars. This series stands out with its unique ice texture, perfect for preserving freshness and enhancing presentation. The "F" Series also boasts high production rates, ensuring a continuous supply of ice even during peak hours.

Both series come equipped with Hoshizaki's exclusive Cascade Ice Making System, which enhances water flow and improves efficiency, leading to lower energy consumption. This is complemented by an exterior that is easy to clean and maintain, reducing labor costs associated with upkeep.

Key characteristics of the KML Series include durable stainless-steel construction, providing longevity and resistance to corrosion. Moreover, both series feature a self-diagnostic control system that alerts users to potential issues before they become significant problems, thereby minimizing downtime.

In addition to their robust design and performance, they also incorporate environmental considerations. Hoshizaki machines are engineered to operate using refrigerants that have a lower impact on the ozone layer, making them compliant with global environmental standards.

Overall, the Hoshizaki KML "H" Series and KML "F" Series stand out in the competitive landscape of commercial ice machines, combining innovative technology, exceptional durability, and user-friendly features to provide a reliable ice-making solution for various foodservice applications.
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