The Wacker Neuson Calibration Purge Magnet is a genuine OEM component designed for the HI 770 XHD Indirect Air Heater series, including Arctic Bear XHD and HI770XHD configurations. As a direct factory replacement, this part is sourced to the exact specification used in original production, ensuring it seats and functions correctly without adaptation. It is confirmed to fit across multiple HI 770 XHD build variants, covering both single- and dual-outlet configurations in diesel-powered indirect heater applications.
Key Features
- Genuine OEM Magnetic Specification — Manufactured to the exact magnetic field strength required for accurate calibration and purge cycle control in the HI 770 XHD heater system.
- Drop-In OEM Replacement — Installs directly into the original mounting position with no reworking of surrounding components, maintaining the integrity of the calibration assembly.
- Broad HI 770 XHD Coverage — Fits Arctic Bear XHD, Arctic Bear XHD NS, and HI770XHD indirect air heater variants across 1x16, 1x20, and 2x12 duct configurations.
- Supports Accurate Purge Sequencing — A correctly functioning calibration purge magnet ensures the heater's purge cycle triggers at the right moment, protecting combustion components from fuel buildup and unburned residue.
- Fuel System Safety Relevance — Proper calibration and purge function is critical in diesel indirect heaters; a failed or out-of-spec magnet can disrupt purge timing, increasing the risk of unsafe fuel accumulation in the combustion chamber.
The calibration purge magnet plays a key role in the ignition and shutdown sequencing of diesel indirect air heaters. It works within the control circuit to signal when the purge cycle should activate, clearing residual fuel vapors from the combustion chamber before and after operation. When this magnet degrades or loses its calibrated field strength, purge timing becomes unreliable, which can lead to ignition faults, heater lockout, or unsafe fuel conditions inside the unit.
Part Details
| Part Number | 5200009281 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Calibration Purge Magnet |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| HI 770 XHD Indirect Air Heater, Diesel, 2x12 | Arctic Bear XHD | 5000620676 |
| HI 770 XHD Indirect Air Heater, Diesel, 1x16 | HI770XHD | 5000620183, 5200003814, 5200004934, 5100049894 |
| HI770XHD Indirect Heater | Arctic Bear XHD NS | 5000620690 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
