Vitronics Soltec ITW Reflow Oven Heater Assembly C70036

Core Positioning and Structure

1. Component Essence
Part Number: C70036, Official Name: Reflow Oven Heater Assembly / Heating Element Bank
Structure: Multiple U-shaped/straight stainless steel heating tubes + stainless steel mounting flange + terminal block assembly; an integrated heating module, not a single heating rod.
Physical Features:
Stainless Steel Flange (Left Side): Used to fix the reflow oven temperature zone chamber.
Multiple Parallel Heating Tubes (with fins/plain tubes): Immersed in the hot air duct to heat the circulating air.
High-Temperature Silicone/Ceramic Terminal Blocks (Red Leads): Temperature resistant 300℃+, used to connect to the oven temperature control power supply.
Right Side Stainless Steel End Cap: Fixes the end of the heating tubes, ensuring structural stability.

2. Compatible Models
Centurion Series: Centurion CT, Centurion N2 series reflow ovens
XPM Series: XPM2, XPM3, XPM3m Reflow Soldering (Partial Temperature Zones)

Installation Location: Reflow oven preheating zone, constant temperature zone, reflow zone (upper/lower temperature zones), 1-2 sets per zone

Original Core Parameters (Precise Matching)

Parameter Items: Original Standard Specifications

Rated Voltage: 230V AC / 400V AC (Three-phase, configuration according to model)

Single Group Total Power: 6kW / 8kW / 12kW (Commonly 8kW, multiple heating elements in parallel)

Single Heating Element: 230V / 1.5kW-2kW, 316L stainless steel sheath, NiCr80/20 heating wire, high-purity MgO insulation

Upper Temperature Limit: 450℃ (Operating temperature inside the furnace: 25-300℃, redundant design)

Wiring Method: Multiple sets in parallel, high-temperature ceramic terminals, red high-temperature leads (resistant to 300℃)

Flange Size: Standard square / rectangular flange (compatible with Centurion/XPM furnace mounting holes)

Material 304/316L Stainless Steel (Flange + Heating Element + End Cap), High-Temperature Insulating Material

Function and Working Principle: Core Function: As the core heat source for the reflow oven’s temperature zone, the heating element heats the circulating hot air to the set temperature (e.g., preheating 150℃, reflow 250℃), enabling precise reflow soldering of PCB solder paste.

Working Logic: The temperature control module collects the furnace temperature in real time and controls the on/off state/power of the heating elements via PID control.
Multiple heating elements are connected in parallel to ensure temperature uniformity across the heating zone (△T < ±2℃).
Finated/smooth tube structure enhances heat exchange and improves hot air heating efficiency.

Customization Requirements: Completely matches flange size, number/power/length of heating elements, and terminal specifications.
Material: 316L stainless steel heating elements, high-temperature resistant leads, same power configuration.
Key Points: Customization must be based on the original assembly disassembly parameters to ensure complete consistency in power, resistance, and installation dimensions to avoid temperature control abnormalities.

Fault Diagnosis and Maintenance:
1. Common Faults
Temperature not rising/Large temperature difference across heating zones: Single/multiple heating elements open circuit (multimeter resistance measurement; open circuit indicates damage).
Tripping/Leakage: Heating element insulation breakdown, sheath corrosion, terminal short circuit.
Uneven heating: Heating element aging, power attenuation, flux buildup on fins/ Dust blockage
Lead wire burnout: High-temperature aging, loose wiring, poor contact

2. Maintenance and Replacement
Testing method: After power off, use a multimeter to measure the resistance of each heating element (single element 230V/2kW≈26.5Ω, total resistance calculated as parallel), insulation to ground ≥20MΩ
Replacement cycle: 12-24 months under normal operating conditions, 6-12 months in lead-free/high-volume environments
Maintenance points: Regularly clean flux residue on heating elements/fins to ensure heat exchange efficiency; check the tightness of wiring terminals to avoid loose connections and overheating

Quickly check the list (avoid buying the wrong one)
Part number confirmation: C70036 (distinguish between different power assemblies such as C70037/C70038 in the same series)
Model matching: Centurion/XPM reflow soldering, check the temperature zone (upper/lower, preheating/reflow)
Parameter verification: Total power, voltage, flange size, number of heating elements / Wiring Confirmation: Terminal specifications, lead wire length, phase sequence (three-phase/single-phase)

Actual Image Correspondence Explanation: The red lead wire is a high-temperature heat-resistant wire; the label indicates the original manufacturer/supplier.
The stainless steel flange, multiple parallel heating tubes, and end cap structure fully comply with the original manufacturer’s design of C70036.