How to maintain an immersion oil heater

Based on conventional immersion oil heaters, this model features improved wiring and heating structures, employing three heating tubes per group, effectively reducing the surface load on the heater. Manufacturers of immersion oil heaters utilize bent tubular elements welded to flanges. Because the heaters heat directly in the oil, they offer high thermal efficiency and a long service life. When using solid nitrate or alkali, the components should be operated at a reduced voltage until the dielectric is completely melted before being connected to the rated voltage. During operation, ensure that the wiring ends are protected from contact with nitrate vapor to prevent discharge, and the liquid level must not fall below the overall dimensions.

Manufactured immersion oil heater components should be stored in a dry place. If the insulation resistance drops below 1 megohm due to prolonged storage, they can be restored by drying them in an oven at approximately 200 degrees Celsius for several hours or by applying low-voltage power to the components for several hours. The automatic control box, oil filter, and other electrical components on the heater main unit are maintained according to standard electrical maintenance procedures. All performance parameters of the automatic control box are carefully adjusted by the manufacturer before shipment and should not be altered without authorization by the user. Ensure that the thermal controls are in good condition and inspect them regularly. If the microswitch is malfunctioning or damaged, replace it promptly. The main motors used in most immersion oil heaters manufactured by manufacturers generally require no maintenance for 5,000 hours. If they malfunction due to extended use or other reasons, they should be inspected. Check for carbon brush wear and bearing lubrication. Add grease or replace carbon brushes if necessary.