b) Freezer

Freezer Sequence Flow Chart

 

 

 

 

1. Startup/Cool Down

 

 

2. Cool Down Achieved

 

4. Defrost

 

 

5. Defrost Termination

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3. Cool Down

Restart

 

 

 

 

 

DTh is at or below 32°F (0°C)

 

 

DTh warms to 59°F (15°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

CTh cools to

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DTh reaches 32°F (0°C),

 

 

 

 

 

 

 

and 4-hour cumulative Comp

 

 

3-min. Comp delay timer starts

 

 

 

 

 

 

 

 

 

 

3°F (1.7°C)

 

CTh warms

 

 

run timer terminates

 

 

 

 

 

 

 

 

 

 

then 4-hour cumulative

 

 

 

 

 

 

 

(EvapFM starts with Comp on manual

 

 

Slight

 

 

 

 

 

below setpoint.

 

to 3°F (1.7°C)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Comp run timer starts

 

 

 

 

 

 

 

 

 

 

 

 

defrost restart)

 

 

Delay at

 

 

 

 

 

 

 

 

Factory default

 

above setpoint

 

 

8-min. EvapFM delay timer starts

 

 

Startup

 

 

 

 

 

 

 

 

-4°F (-20°C)

 

 

 

 

 

 

 

 

 

 

 

 

(except on manual defrost restarts)

 

 

 

 

 

 

 

 

 

 

CTh in control

 

 

 

 

 

 

 

 

DTh in control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

13-minute temperature display

 

 

 

 

 

 

 

 

 

2-min. Comp on

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2-min. Comp off

 

 

 

 

 

 

 

 

 

 

 

 

 

Power on

 

 

 

 

 

 

timer starts

 

 

timer starts

 

 

 

 

 

 

 

 

 

 

 

 

delay timer starts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

MH energized

 

Comp energized

 

EvapFM energized

 

 

 

DH energized

MH energized

PH energized

 

ConFM energized

 

MH energized

 

 

 

MH energized

PH energized

 

 

 

 

 

 

 

 

 

 

 

 

EvapFM energized

 

PH energized

 

 

 

PH energized

DH de-energized

 

 

 

 

 

 

MH energized

 

Comp de-energized

 

 

 

Comp de-energized

 

 

 

 

 

 

 

 

 

 

 

PH energized

 

ConFM de-energized

 

 

 

ConFM de-energized

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

EvapFM de-energized

 

 

 

 

 

Legend: Comp-compressorConFM-condenser fan motor CTh-cabinet thermistor DH-defrost heater DTh-defrost thermistor EvapFM-evaporator fan motor MH-mullion heater PH-perimeter heater

Note:

a)EvapFM de-energizes when door is opened on FS and when upper door is opened on HS.

b)2-minute minimum Comp on timer starts when Comp energizes.

c)2-minute minimum Comp off timer starts when Comp de-energizes.

d)3-minute Comp delay timer starts when defrost termination temperature is met.

e)8-minute EvapFM delay timer starts when defrost termination temperature is met. (3-minute delay timer if defrost initiated manually)

f)13-minute temperature display delay timer starts when defrost termination temperature is met.

g)5-minute minimum defrost time.

h)1-hour maximum defrost time.

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Page 15
Image 15
Hoshizaki 73183 service manual Freezer Sequence Flow Chart
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73183 specifications

The Hoshizaki 73183 is a state-of-the-art ice machine that has garnered attention in the foodservice industry for its reliability and efficiency. Renowned for its compact design, the model is particularly well-suited for restaurants, bars, and cafes where space is often at a premium. One of the standout features of the Hoshizaki 73183 is its capability to produce high-quality cube ice, essential for various beverages and food presentation.

One of the primary technologies that sets this ice machine apart is the Kold-Draft ice production method. This technology ensures that the ice produced is not only clear and hard but also lasts longer in drinks, preventing dilution. The 73183 model is capable of producing up to 800 pounds of ice in a 24-hour cycle, making it a reliable choice for businesses requiring a high volume of ice throughout the day.

Energy efficiency is another hallmark of the Hoshizaki 73183. The unit operates with a low energy consumption rate, aligning with today’s demand for sustainable ice production solutions. It is equipped with efficient compressor technology, which reduces operational costs without compromising performance. In addition, the machine utilizes an advanced air-cooled condenser system, making it optimal for various ambient conditions while ensuring consistent ice output.

Durability and ease of maintenance also characterize the Hoshizaki 73183. Constructed with stainless steel, the unit is not only aesthetically pleasing but also resistant to corrosion and wear, ensuring longevity in a demanding kitchen environment. Furthermore, the machine features an easy-to-access design that simplifies cleaning and maintenance, promoting optimal hygiene and performance.

The unit also integrates user-friendly digital controls, allowing operators to monitor ice production rates and make adjustments as needed. An intuitive display provides real-time status updates, ensuring that businesses can always meet their ice needs.

In summary, the Hoshizaki 73183 ice machine combines innovative technology with robust design, making it an ideal choice for businesses seeking a reliable, efficient, and high-performing ice production solution. Its remarkable features and characteristics firmly establish it as a leading option in the competitive landscape of commercial ice machines.
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