1. Introduction
This manual provides essential instructions for the safe and efficient installation, operation, and maintenance of your Marchia MB48-W 48-inch Curved Glass Refrigerated Bakery Display Case. Please read this manual thoroughly before operating the unit and retain it for future reference. This appliance is designed for commercial use only.
Image 1.1: The Marchia MB48-W refrigerated bakery display case, showcasing its curved glass design and internal shelving filled with various bakery items.
2. Safety Information
WARNING: Failure to follow these safety instructions may result in fire, electric shock, serious injury, or death.
- Ensure the unit is connected to a properly grounded electrical outlet with the correct voltage as specified on the rating label.
- Do not operate the unit with a damaged power cord or plug. Contact qualified service personnel for repairs.
- Keep ventilation openings clear of obstructions.
- Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.
- This appliance is not intended for use by persons (including children) with reduced physical, sensory, or mental capabilities, or lack of experience and knowledge, unless they have been given supervision or instruction concerning use of the appliance by a person responsible for their safety.
- Always unplug the unit before cleaning or performing any maintenance.
- Do not use water jets or steam cleaners to clean the exterior or interior of the unit.
3. Product Overview
The Marchia MB48-W is a 48-inch curved glass refrigerated bakery display case designed for commercial environments. It features a white exterior finish, brilliant LED lighting, and adjustable glass shelves to showcase products effectively while maintaining optimal temperatures.
Key Features:
- White Exterior Finish
- Brilliant LED Lighting
- 2 Adjustable Glass Shelves
- 14.1 cu. ft. Capacity
- Temperature Range: 36.6°F to 47.4°F (2.6°C to 8.5°C)
- Automatic Defrost System
Image 3.1: An empty Marchia MB48-W display case, highlighting the interior space and adjustable glass shelves.
4. Setup Instructions
4.1 Unpacking
- Carefully remove all packaging materials, including tape and protective films.
- Inspect the unit for any shipping damage. Report any damage to the carrier immediately.
- Retain packaging materials for potential future transport or return.
4.2 Placement
- Place the display case on a firm, level surface capable of supporting its weight (approximately 342 lbs).
- Ensure adequate ventilation around the unit. Maintain a minimum of 4 inches (10 cm) clearance from walls or other obstructions on all sides, especially the rear where the compressor is located.
- Avoid direct sunlight or proximity to heat-generating appliances (ovens, stoves) to ensure optimal cooling performance.
- The unit is equipped with caster wheels for mobility. Ensure the casters are locked once the unit is in its final position.
Image 4.1: Detail of a caster wheel, indicating mobility and locking mechanism for stable placement.
4.3 Initial Cleaning
Before first use, clean the interior and exterior surfaces with a mild detergent and warm water. Rinse thoroughly and dry with a soft cloth. Do not use abrasive cleaners or solvents.
4.4 Power Connection
- Allow the unit to stand upright for at least 2 hours before plugging it in to allow compressor oils to settle.
- Plug the power cord into a dedicated, grounded electrical outlet. Do not use extension cords or adapter plugs.
5. Operating Instructions
5.1 Powering On/Off
Locate the main power switch, typically on the control panel. Flip the switch to the 'ON' position to power on the unit. Flip to 'OFF' to power off.
Image 5.1: The digital control panel, showing the temperature display, adjustment buttons, and the main power switch.
5.2 Temperature Control
The unit features a digital temperature controller. The factory-set temperature range is 36.6°F to 47.4°F (2.6°C to 8.5°C).
- Press the 'SET' button on the control panel to view the current set temperature.
- While the set temperature is displayed, use the 'Up' and 'Down' arrow buttons to adjust the desired temperature.
- Press 'SET' again or wait a few seconds for the new setting to be saved and the display to return to the actual internal temperature.
5.3 Adjusting Shelves
The display case includes 2 adjustable glass shelves. To adjust their height:
- Empty the shelf of all products.
- Carefully lift the shelf and reposition the shelf supports to the desired height.
- Ensure the shelf is securely seated on all supports before placing products back on it.
5.4 Loading Products
- Load products evenly on the shelves to ensure proper air circulation. Do not block the internal air vents.
- Avoid overloading the shelves beyond their weight capacity.
- Utilize the rear sliding doors for loading and unloading products to minimize temperature fluctuations.
Image 5.2: Rear view of the display case, illustrating the sliding access doors for product loading and retrieval.
6. Maintenance
6.1 Cleaning
Always unplug the unit before cleaning.
- Interior: Regularly clean the interior with a mild, food-safe detergent and warm water. Rinse with clean water and dry thoroughly to prevent mold and odors.
- Exterior: Wipe down the exterior surfaces with a soft cloth and mild cleaner. For the white finish, avoid abrasive materials that could scratch the surface.
- Glass Surfaces: Use a non-abrasive glass cleaner and a soft cloth to keep the curved glass and shelves sparkling.
- Condenser Coil: The condenser coil should be cleaned periodically (every 1-3 months, depending on environment) to ensure efficient operation. Consult a qualified technician for this procedure.
6.2 Defrosting
This unit features an automatic defrost system. During normal operation, the unit will periodically enter a defrost cycle to remove ice buildup from the evaporator coil. Water from defrosting is evaporated automatically. Ensure the drain pan is clear and free of obstructions.
7. Troubleshooting
Before contacting service, review the following common issues and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| Unit not cooling | Power cord unplugged; circuit breaker tripped; temperature set too high; condenser coil dirty; doors not closing properly. | Check power connection; reset breaker; adjust temperature setting; clean condenser coil (professional recommended); ensure doors are sealed. |
| Excessive noise | Unit not level; loose components; fan obstruction. | Level the unit; check for loose parts and tighten; clear any obstructions from fan blades. |
| Water on floor | Drain pan overflowing; drain line clogged. | Check and empty drain pan; clear drain line obstruction. |
| Display error code | Sensor fault; control board issue. | Refer to the control panel manual (if separate) or contact service. |
If problems persist after attempting these solutions, contact qualified service personnel.
8. Specifications
| Specification | Detail |
|---|---|
| Model | MB48-W |
| Brand | Marchia |
| Capacity | 14.1 Cubic Feet |
| Product Dimensions (D x W x H) | 48 x 26.6 x 48 inches (121.9 x 67.6 x 121.9 cm) |
| Item Weight | 342 Pounds (155.1 kg) |
| Temperature Range | 36.6°F to 47.4°F (2.6°C to 8.5°C) |
| Installation Type | Freestanding |
| Defrost System | Automatic |
| Number of Doors | 1 (rear sliding access) |
| Shelf Type | Glass (2 adjustable) |
| Door Material Type | Glass |
| Special Features | Adjustable Shelves, Brilliant LED Lighting |
9. Warranty and Support
For warranty information and customer support, please refer to the documentation provided at the time of purchase or contact your vendor. Please note that the buyer is responsible for return shipping and return freight costs for this product.
For further assistance, you may contact Marchia customer service or the retailer from whom the product was purchased.
