Hoshizaki 73183 service manual Defrost

Page 31

c)HPS Activation: Confirm ConFM is energized and fan blade turns freely. Check that the condenser coil is not clogged or restricted. Check that there are no restrictions in the refrigeration circuit (drier, TXV).

Confirm that the location meets factory requirements:

•This unit is not intended for outdoor use. Normal operating ambient temperature should be within 45°F to 100°F (7°C to 38°C).

•The unit should not be located next to ovens, grills, or other high heat producing equipment.

•The unit should not be located in a corrosive environment.

•The unit should be a minimum of 4" (11 cm) from side walls.

•A minimum of 10" (25 cm) overhead clearance should be provided for proper ventilation.

8)Cool Down Achieved–CTh cools to 3°F (1.7°C) below setpoint. EvapFM, MH, and

PH continue. Comp and ConFM de‑energize. Diagnosis: If Comp and ConFM do not de‑energize, confirm CTh status. See "IV.C. Thermistor Check." If CTh ohm reading is in proper range and Comp and ConFM do not de-energize, CM is defective and must be replaced.

9)Defrost

Temperature/Time-Initiated Defrost: Once DTh cools to 32°F (0°C), a 4-hour cumulative Comp run timer starts. Once DTh is at or below 32°F (0°C) and 4-hour cumulative Comp run timer terminates, MH and PH continue, DH energizes, and Comp, ConFM, and EvapFM de‑energize. Defrost Termination: DTh warms to 59°F (15°C). MH and PH continue. DH de‑energizes. 3-minute Comp delay timer starts, 8-minute EvapFM delay timer starts (3-minutes on manually initiated defrost), and 13-minute temperature display delay timer starts.

3-minute Comp delay timer terminates, Comp and ConFM energize. 5 minutes later,

8-minute EvapFM delay timer terminates and EvapFM energizes. 5 minutes after that, 13-minute temperature display delay timer terminates and cabinet temperature appears on DM.

Defrost Diagnosis:

Defrost Initiation: Has DTh cooled to 32°F (0°C) or lower? Confirm DTh status. See "IV.C. Thermistor Check." Has 4-hour Comp cumulative run timer satisfied. Check that Comp, ConFM, and EvapFM de-energize. If not, check for 115VAC between CM C1 and CM N5, then between CM F6 and CM N5. If 115VAC is present, CM is defective and must be replaced. If there is no voltage between CM C1 and CM N5 and Comp and ConFM do not de-energize, check for 115VAC between CR terminal 1 and neutral. If 115VAC is present between CR terminal 1 and neutral, CR is defective and must be replaced. Confirm DH energizes. If not, check for 115VAC between CM H4 and CM N5. If 115VAC is not present and DTh is in proper range, CM is defective and must be replaced. If 115VAC is present, confirm DH thermostat continuity, DH amp draw, and DH continuity.

31

Page 30 Page 32
Image 31
Page 30 Page 32
Contents Superior Degree Reliability Number Issued Hoshizaki AMERICA, INC Contents Page Unit Important Safety InformationSerious injury Indicates important information about the use and carePage Dimensions Specifications Nameplate RatingsRefrigerated Volume and Shelf Space Unit mm One Section/Two Section/Three SectionOne Section II. General Information ConstructionTwo Section Three Section Sequence Cycles and Shutdown Sequence of OperationFreezer Charts Refrigerator Sequence Flow ChartFreezer Sequence Flow Chart Display Module Layout Display ModuleTemperature Setpoint Controls and AdjustmentsRefrigerator Control Module Freezer Control Module Control ModuleControl Module Layout Refrigerator & Freezer Cabinet Alarm SafetiesCompressor External or Internal Overload High-Pressure SwitchMullion/Perimeter Heater ThermistorsIII. Technical Data Refrigeration Circuit Wiring Diagrams CR2B-FS/HS, CR3B-FS/HS CF1B-FS/HS, CF3B-FS/HS CF2B-FS/HS, CF3B-FS/HS Page Diagnostic Procedure IV. Service DiagnosisRefrigerator Defrost Diagnosis DefrostFreezer Defrost Page Startup/Cool Down Control Module CheckThermistor Check Unit Not Cooling Diagnostic ChartDefrost Fails to Terminate Evaporator is Frozen UpService for Refrigerant Lines Replacement of ComponentsRefrigerant Recovery Evacuation and Recharge BrazingPage Door Re-Hinging Important Notes for Component ReplacementMaintenance CleaningShutdown and Long Storage

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.
Top Page Image Contents