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| Quantity: | |
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Soren20061111
JINGCHENG
3917290000 3904610000 3917390000
JINGCHENG Food Hose is an electrically heated hose for all kinds of food conveying equipment, built with a customized conveying inner tube selected for the food product and heat resistant up to 100°C, with higher temperatures on request. This page gives maintenance teams daily, weekly and shutdown checks for food conveying heated hoses — temperature, flow, leaks, routing, insulation, connectors and sensors — together with a findings table that links each symptom to its likely cause.
A heated hose on a food conveying line works in the background until the product starts to thicken, a temperature alarm appears, or a fitting begins to weep. Most of these stoppages can be found earlier with a short, regular inspection. This page gives maintenance teams a practical inspection and maintenance checklist for the JINGCHENG Food Hose, built around the figures in our catalog.
The JINGCHENG 2025 Electrically Heated Hose Catalog describes the Food Hose as suitable for all kinds of food conveying equipment, built with a customized conveying inner tube selected for the food product, and states that every line can be customized to your requirements. Heat resistance is up to 100°C, with higher temperatures available on request.
Inspection only makes sense against known limits. Keep these catalog values at the machine:
Maximum temperature: 100°C standard rating. Do not raise the controller set point above it.
Working pressure by bore: from 173 bar at 1/4" down to 75 bar at 1".
Minimum bend radius by bore: from 30 mm at 1/4" up to 300 mm at 1".
Ambient environment: -40°C to +55°C, relative humidity not above 85%, no gases that corrode metal or damage insulation.
Inner Diameter (inch) | Outer Diameter (mm ±0.2) | Working Pressure (bar) | Working Pressure (psi) | Burst Pressure (bar) | Burst Pressure (psi) | Min. Bend Radius (mm) |
|---|---|---|---|---|---|---|
1/4" | 9 | 173 | 2501 | 690 | 10005 | 30 |
5/16" | 11 | 158 | 2284 | 630 | 9137 | 40 |
3/8" | 12.4 | 135 | 1958 | 540 | 7830 | 60 |
1/2" | 15.9 | 118 | 1704 | 470 | 6815 | 150 |
5/8" | 19 | 88 | 1269 | 350 | 5075 | 180 |
3/4" | 22.6 | 85 | 1234 | 340 | 4930 | 260 |
1" | 29.5 | 75 | 1088 | 300 | 4350 | 300 |
Data source: JINGCHENG 2025 Electrically Heated Hose Catalog. Heat resistance up to 100°C; higher temperature on request. Confirm the rating at your operating temperature with our engineers when ordering.
Temperature reading. Compare the controller value with the set point after warm-up. A slow rise or a reading that never settles is the first sign of a heating or sensor problem.
Product flow. Note any increase in pump pressure or a slower fill. Rising pressure at a constant set point often points to a cold section.
Visible leaks. Look at both fittings and the first 20 cm of hose behind each fitting.
Routing. Make sure the hose has not been pushed into a bend tighter than the table value or twisted sideways after cleaning or a changeover.
Outer jacket and insulation. Check for cuts, crushed sections, abrasion where the hose rubs on the frame, and hot spots on the surface. The insulation is designed around the surface temperature, so a section that feels clearly hotter than the rest deserves attention.
Connectors and cables. Inspect plugs for bent pins, cracked housings and loose strain relief. Confirm that each plug sits in the correct controller zone.
Supports. Hoses that hang without support load the fitting. Add hangers or a guide so the hose keeps its natural curve.
Sensor verification. Check the sensor reading at room temperature against a reference thermometer. Confirm the controller input still matches the sensor type fitted (Type J, Type K, Ni120, PT100 or PT1000).
Heating circuit. With the power isolated, a qualified electrician can measure the heating circuit resistance and the insulation resistance, and compare them with the values recorded at installation.
Fittings. Re-check thread condition and seals when the hose is disconnected for cleaning.
Records. Note the readings in a hose log so changes over time become visible.
Finding | Likely cause | Action |
|---|---|---|
Product thickens at one end | Heat loss at an unsupported or exposed end | Improve support and insulation at the end, check the fitting area |
Temperature overshoot | Wrong sensor type selected in the controller | Match the controller input to the fitted sensor |
Leak at the fitting | Twisting or a tight bend near the fitting | Reroute with the correct bend radius, then replace the seal |
Hot spot on the surface | Crushed insulation or mechanical damage | Remove from service and contact JINGCHENG |
The heating layer of the Food Hose is made of uniformly braided heating elements, which minimizes differences in temperature along the inner wall. Even heating means fewer cold spots, so readings stay more stable and deviations are easier to see during inspection.
Wire and operate the hose according to its technical data and pin table.
Only authorized and trained personnel should install or operate it.
Unauthorized modification voids the warranty.
If a problem occurs that the instructions do not cover, stop and contact JINGCHENG for guidance.
When a hose reaches the end of its service life, the replacement can be built to the original code. Bore, length, voltage, power, sensor and fittings stay the same, so the line goes back into production without controller changes. Send us the existing hose code or label data and we will quote an identical food heated hose.
