1.製品オーバーview
The Broan-NuTone S99080521 is an Original Equipment Manufacturer (OEM) authorized replacement motor designed for various Broan exhaust fan models, including the 678-G and 2678F-A series. This motor is intended to restore the functionality of your existing exhaust fan unit.
画像1.1: The Broan-NuTone S99080521 replacement motor. This image displays the motor unit with its electrical wiring and the characteristic D-shaft for impeller attachment. The fan impeller assembly is included with the motor but may not be visible in all product images.
- OEM認定部品: Ensures compatibility and performance with specified Broan models.
- モデルの互換性: Specifically designed to fit Broan 678-G and 2678F-A exhaust fan units.
- 含まれるコンポーネント: The motor unit typically includes the fan assembly that mounts to the motor. Note that the shaft type is a "D" shaft, not a spline shaft.
2. 安全情報
設置およびメンテナンス中は、常に次の安全上の注意事項を守ってください。
- 電源を切る: Before attempting any installation, maintenance, or repair, ensure that the power supply to the exhaust fan unit is completely disconnected at the circuit breaker or fuse box. Failure to do so can result in electric shock or serious injury.
- 有資格者: 設置プロセスのいずれかの部分について不明な点がある場合は、資格のある電気技師または HVAC 技術者に相談してください。
- 保護具を着用する: Wear appropriate personal protective equipment, such as safety glasses and gloves, to prevent injury.
- コンポーネントの検査: Before installation, inspect the new motor and existing fan housing for any damage. Do not install damaged parts.
- 適切なツール: Use only appropriate tools for the task to avoid damage to the motor or fan unit.
3. インストール手順
This section outlines the general steps for replacing the motor in compatible Broan exhaust fan models. Specific fan models may have slight variations.
- インストールの準備:
- Ensure power to the fan unit is OFF at the circuit breaker.
- Remove the fan grille or cover to access the motor assembly.
- Carefully disconnect any electrical wiring from the old motor. Note the wiring configuration, taking photos if necessary.
- 古いモーターを取り外す:
- Locate the nuts or screws securing the old motor to the fan housing. These are typically two nuts.
- Carefully remove the fan impeller (plastic fan blade) from the motor shaft. You will need to reuse this component.
- Remove the old motor from the housing.
- ファンハウジングの清掃:
While the motor is removed, it is an opportune time to clean any accumulated dust or debris from the fan housing. Use a vacuum cleaner or damp cloth. Ensure the housing is dry before proceeding.
- 新しいモーターをインストールします:
- Position the new S99080521 motor into the fan housing. Ensure the motor mount aligns correctly with the mounting holes.
- Secure the motor using the original nuts or screws. Ensure it is firmly seated.
- 重要な注意: In some cases, the motor mount may need to be reoriented. If the wiring exits the motor in a way that would interfere with the fan impeller or housing, carefully remove the motor mount, rotate the motor armature, and reattach the mount to ensure proper wire routing and clearance.
- Attach Fan Impeller:
- Slide the original plastic fan impeller onto the new motor's D-shaft. Ensure it is fully seated and secured. The D-shaft design prevents the impeller from spinning freely on the shaft.
- 配線を接続:
- Reconnect the electrical wiring to the new motor, matching the configuration noted during disassembly. Ensure all connections are secure.
- 最終ステップ:
- Replace the fan grille or cover.
- Restore power to the fan unit at the circuit breaker.
- ファンが適切に動作するかテストします。
4. 操作手順
The Broan-NuTone S99080521 motor operates as part of your existing Broan exhaust fan unit. Once installed, the fan's operation is controlled by its original wall switch or integrated controls.
- アクティベーション: Turn on the wall switch connected to your exhaust fan to activate the motor and fan.
- 非アクティブ化: Turn off the wall switch to deactivate the motor and fan.
- 連続運転: For optimal ventilation, operate the fan during and after activities that generate moisture or odors in the room.
5. メンテナンス
Regular maintenance ensures the longevity and efficient operation of your exhaust fan motor.
- 電源切断: Always disconnect power to the fan unit before performing any maintenance.
- ファングリルの清掃: Periodically remove and clean the fan grille with a mild detergent and water. Ensure it is completely dry before reattaching.
- Clean Fan Impeller: If accessible, carefully remove the fan impeller and clean any dust or lint buildup. A soft brush or vacuum cleaner can be used. Ensure the impeller is balanced and securely reattached.
- モーター潤滑: The S99080521 motor is typically sealed and does not require user lubrication. Do not attempt to lubricate the motor unless specifically instructed by Broan-NuTone.
- 配線の検査: Annually inspect the motor's wiring for any signs of wear, fraying, or loose connections.
6。 トラブルシューティング
If your exhaust fan is not operating correctly after motor replacement, refer to the following troubleshooting guide:
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| ファンが作動しません。 | ユニットに電源が供給されていません。 配線接続が緩んでいます。 壁のスイッチが故障しています。 |
回路ブレーカーを確認してください。 すべての配線接続が安全であることを確認します (電源をオフにした状態で)。 壁のスイッチをテストするか交換します。 |
| Fan runs but is noisy (e.g., humming, rattling). | Impeller unbalanced or dirty. モーターがしっかりと取り付けられていません。 Foreign object in housing. Motor mount reorientation needed. |
Clean and re-seat impeller. Tighten motor mounting nuts/screws. Inspect housing for debris. Review installation step 3.4 regarding motor mount orientation. |
| ファンの回転が遅い、または弱い。 | Excessive dust/debris on impeller. Restricted airflow in ductwork. |
Clean impeller and housing. Inspect and clear ductwork if accessible. |
トラブルシューティング手順を実行しても問題が解決しない場合は、Broan-NuTone カスタマー サポートまたは資格のある技術者にお問い合わせください。
7. 仕様
- モデル番号: S99080521
- メーカー: ブロアン・ニュートーン
- 製品寸法: Approximately 1 x 1 x 1 inches (Note: This may refer to packaging or a general placeholder; actual motor dimensions may vary slightly for fitment.)
- 商品の重量: 約1ポンド
- 部品タイプ: OEM Authorized Replacement Motor
- 互換性: Broan 678-G, 2678F-A, and various other Broan models.
8. 保証とサポート
Specific warranty details for the Broan-NuTone S99080521 motor are not provided within this document. For warranty information, please refer to the original product packaging, the official Broan-NuTone website, or contact Broan-NuTone customer service directly.
For technical assistance, parts inquiries, or further support, please contact Broan-NuTone customer service through their official channels.
Broan-NuTone の連絡先情報: Please visit the official Broan-NuTone website for the most current contact details, including phone numbers and support forms.





