The provided document is a planned maintenance manual for Manitowoc Foodservice Manitowoc Ice Machines, specifically models S, IB, and Q. This manual outlines the procedures for cleaning and sanitizing the ice machine and its dispenser components.
Function Description
The Manitowoc Ice Machine is designed to produce ice for commercial use, particularly in food service establishments like McDonald's. It features an evaporator for ice formation, a water trough, a water distribution tube, and an ice storage bin or dispenser. The machine operates through various cycles, including ice production, cleaning, and sanitizing, controlled by a toggle switch.
Important Technical Specifications
While the manual doesn't list detailed technical specifications like power consumption or dimensions, it does provide information related to the capacity and type of ice machines by referencing specific models:
- Models: S, IB, and Q series.
- Specific Sub-models mentioned for DeLimer/Sanitizer packets:
- S300, S320, S420, Q280, Q320, Q420
- S1200, S1400, S1600, S1800, Q1300, Q1600, Q1800
- Front Panel Variations:
- 30-inch and 48-inch models have two front panels.
- 22-inch ice machines have a single door.
- Control Interface: Features an ICE/OFF/CLEAN toggle switch and a yellow "clean" light indicator.
Usage Features
The ice machine is designed for ease of operation and maintenance within a commercial setting.
- Ice Production: The machine automatically produces ice when the toggle switch is in the "ICE" position.
- Cleaning Cycle: A dedicated "CLEAN" position on the toggle switch initiates an automatic wash and rinse cycle, lasting approximately 30 minutes. A yellow clean light indicates the machine is in clean mode.
- Safety Features: Screws securing the front panels are retained to prevent loss during removal. The manual emphasizes unplugging the machine before cleaning other parts to prevent electrical hazards.
- Ice Storage: Features an ice bin or dispenser for storing produced ice. The manual suggests storing ice in a freezer if cleaning in the production area.
Maintenance Features
The manual primarily focuses on the monthly maintenance tasks of cleaning and sanitizing the ice machine, which are crucial for hygiene and optimal performance.
- Frequency: Monthly maintenance is recommended, with a preparation time of 10 minutes and a total completion time of 90 minutes. For 24-hour restaurants, maintenance should occur during low-volume periods at night.
- Tools and Supplies: Specific tools and supplies are listed, including a measuring jug, clean and sanitized buckets, soiled towel buckets, ice scoop, DeLimer, Phillips screwdriver, sanitizer solution, and a plastic bucket.
- Cleaning Agents:
- DeLimer: Used to remove mineral buildup from the evaporator and other surfaces. The manual specifies the number of DeLimer packets based on the ice machine model (e.g., 2 packets for S300, S320, S420, Q280, Q320, Q420; 5 packets for S1200, S1400, S1600, S1800, Q1300, Q1600, Q1800; 4 packets for all other models). It's mixed with warm water.
- Sanitizer: Used to kill bacteria and sanitize surfaces. The manual specifies the number of sanitizer packets based on the ice machine model (e.g., 1 packet for S300, S320, S420, Q280, Q320, Q420; 3 packets for S1200, S1400, S1600, S1800, Q1300, Q1600, Q1800; 2 packets for all other models). It's also mixed with warm water.
- Step-by-Step Procedure: The manual provides a detailed, multi-step procedure for cleaning and sanitizing, including:
- Removing the front panel.
- Turning the ice machine off.
- Emptying the ice bin.
- Pre-mixing DeLimer solution.
- Turning the switch to "CLEAN" to run the delime cycle.
- Deliming the evaporator and water trough.
- Allowing the clean cycle to run.
- Turning off and unplugging the ice machine.
- Removing the water curtain.
- Removing the ice thickness probe.
- Removing the water distribution tube.
- Removing the water trough.
- Removing the water level probe.
- Removing the water pump.
- Removing the evaporator tray.
- Deliming plastic parts by soaking them in DeLimer solution (10-15 minutes).
- Deliming surface areas of the ice machine using a delimer-soaked towel.
- Rinsing and sanitizing plastic parts by soaking them in sanitizer solution (10-15 minutes).
- Sanitizing surface areas of the ice machine using a sanitizer-soaked towel.
- Reinstalling plastic evaporator parts in reverse order.
- Plugging the ice machine in.
- Pre-mixing sanitizer solution.
- Moving the toggle switch to "CLEAN" to run the sanitize cycle.
- Sanitizing the evaporator and water trough.
- Moving the toggle switch to "ICE" to resume ice production.
- Reinstalling front panels and tightening screws.
- Discarding the first three loads of ice made after sanitization.
- Alerts and Tips: The manual includes icons for "Hazards" (personal injury risk), "Equipment alerts" (avoiding equipment damage), and "Tips" (helpful procedural advice). For instance, it warns not to soak the water pump motor in DeLimer or sanitizer solution.
- Component Removal: Detailed instructions are provided for removing various components like the front panel, water curtain, ice thickness probe, water distribution tube, water trough, water level probe, water pump, and evaporator tray, facilitating thorough cleaning.
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