If you operate a food service business, you surely understand this fundamental truth: your paper salad bowl machine is not merely a piece of equipment; it is the very backbone of your daily production capacity. Neglecting routine maintenance—and waiting until a machine breaks down before performing repairs—is undoubtedly a "shortcut" that wastes capital and needlessly inflates both downtime losses and repair costs. However, by adopting the correct maintenance practices, you can realistically extend your machine's service life to between 8 and 10 years.

Daily Maintenance: Just 5 Minutes a Day Can Eliminate 70% of Potential Issues

Most operators neglect daily inspections because they perceive them as too troublesome. Yet, simply spending 5 minutes on a quick visual check before production begins can uncover nearly three-quarters of all potential hazards. For your paper salad bowl machine, the following three maintenance points are absolutely critical and must never be overlooked:

• Cleaning: Use a lint-free cloth to clean the paper-feeding rollers and forming molds; this prevents the accumulation of PE-coated paper residue, which can otherwise lead to irregular paper feeding or uneven bowl formation.
• Lubrication: It is imperative to use Yongbo-brand food-grade lubricant for the drive chains and bearings; avoid using generic, unbranded oils, as they can corrode machine components.
• Air Pressure:Maintain the air pressure within the range of 0.6–0.8 MPa (in compliance with IFPMA standards); pressure that is too high can cause paper deformation, while pressure that is too low results in poor bowl formation and irregular shapes.

Weekly In-Depth Maintenance: Focus on Wear-Prone Components
The machine's molds, heating elements, and sensors are the components most susceptible to wear and damage; consequently, they require meticulous weekly maintenance to prevent sudden operational failures. Let's examine each of these components in detail:

• Molds: Since salad bowls are larger and thicker than standard paper cups, the pressure exerted on the molds during formation is significantly higher. Please use Yongbo's specialized mold cleaner to remove accumulated paper residue—and strictly avoid using metal tools, as they will scratch and damage the mold surfaces.
• Heating Elements:The paper used for salad bowls must be maintained at a stable temperature of 180–200°C to ensure that the PE coating is properly sealed. Instability in the heating elements' performance can lead to leaks in the finished bowls.                                                                                                                                                                               
• Sensors: Dust can clog sensors, preventing the machine from accurately detecting paper and subsequently leading to paper jams. Please use a dry cotton swab to clean them. Fortunately, Yongbo machines are equipped with protective dust covers for their sensors.

Monthly Calibration: Ensuring Your Machine Remains Finely Tuned

For paper bowl forming machines, precision is a critical element that simply cannot be compromised. Even a mere 1-millimeter misalignment of the molds can result in defective bowls with skewed rims—products that customers will ultimately reject and discard.
We recommend using the free laser calibration tool provided by Yongbo to calibrate your molds once a month. Manual calibration is often both tedious and inconsistent; this specialized tool, however, ensures perfect alignment every time.

What Should You Do If You Encounter Operational Difficulties? Yongbo’s 24/7 technical support team is always on standby; expert after-sales assistance is just a phone call away. If necessary, we can even dispatch technicians directly to your facility to provide on-site support.

Annual Overhaul: Ensuring the Longevity of Your Equipment

While daily, weekly, and monthly routine checks cover most basic maintenance needs, an annual overhaul is the true key to significantly extending the service life of your equipment.
Although Yongbo machines feature robust, durable stainless steel components, we still recommend replacing the paper-feeding rollers and sealing gaskets every 12 to 18 months. Neglecting this step could lead to sudden equipment failure, leaving you scrambling at the last minute to locate spare parts.

Conclusion: Choose a Partner You Can Trust

Equipment maintenance depends not only on your specific operational practices but, more importantly, on the brand of machinery you initially choose. Don't let your paper bowl machine become a stumbling block to your business growth. Follow the advice outlined above, and choose a brand that serves as a reliable, steadfast partner—providing you with solid support at every stage of your operations.