1. はじめに
This manual provides essential information for the safe and effective operation, maintenance, and care of your CRAFTSMAN CMMT99436 1/2-Inch Digital Torque Wrench. Please read this manual thoroughly before using the tool and retain it for future reference.
The CRAFTSMAN 1/2-Inch Digital Torque Wrench is designed for precision torque applications, offering convenience by converting torque measurements between foot-pounds (ft./lb.), inch-pounds (in./lb.), and Newton-meters (Nm) with ease. Its LED backlit screen ensures clear readability of every readout, even in dimly lit environments.
2. 安全情報
- このツールを操作するときは、必ず安全メガネなどの適切な個人用保護具 (PPE) を着用してください。
- Ensure the workpiece is stable and secured before applying torque.
- Do not exceed the maximum torque capacity of 250 ft./lb.
- Avoid using the torque wrench as a breaker bar or for loosening fasteners.
- Keep the tool clean and dry. Do not expose it to excessive moisture or extreme temperatures.
- Store the tool in its protective case when not in use.
3.コンポーネントオーバーview
The CRAFTSMAN CMMT99436 Digital Torque Wrench consists of the following main components:
- ドライブヘッド: ソケット用の1/2インチ角ドライブ。
- 軸： 耐久性のある金属構造。
- デジタルディスプレイ： トルク読み取り用の LED バックライト付き画面。
- コントロールパネル： Buttons for power, unit selection, and setting adjustments.
- 人間工学に基づいたハンドル: 快適で安全なグリップを提供します。
- バッテリーコンパートメント: Located at the end of the handle.
図1：フル view of the CRAFTSMAN CMMT99436 Digital Torque Wrench.
4. セットアップ
4.1 バッテリーの取り付け
- Locate the battery compartment cap at the end of the handle.
- Unscrew or unclip the cap to open the compartment.
- Insert the required batteries (typically AA, refer to packaging for exact type) ensuring correct polarity (+/-).
- Replace the compartment cap and secure it.
4.2初期校正
For optimal accuracy, ensure the wrench is calibrated before first use and periodically thereafter. Place the wrench on a flat, level surface. Press and hold the 'C' (Calibration) button until the display shows '0000' or a similar calibration indicator. This process zeros the sensor, preparing it for accurate measurements.
5. 操作手順
5.1 電源オン/オフ
- To power on, press the power button (usually marked with a power symbol or 'C'). The display will light up.
- To power off, press and hold the power button until the display turns off. The wrench may also have an auto-shutoff feature after a period of inactivity.
5.2ユニットの選択
Press the 'U/S' (Unit/Setting) button to cycle through available measurement units: ft./lb., in./lb., Nm, and degrees (for angle measurement). Select the desired unit for your application.
Figure 2: Digital display and control panel for unit selection.
5.3 Setting Target Torque/Angle
- Use the arrow buttons (up/down) on the control panel to adjust the target torque value or angle.
- The display will show the set value.
5.4 トルクの適用
- 適切なソケットを 1/2 インチ ドライブ ヘッドに取り付けます。
- ソケットをファスナーの上に置きます。
- Apply steady, smooth force to the handle. The digital display will show the real-time torque being applied.
- As you approach the target torque, the wrench will provide audible beeps and visual indicators (e.g., green LED) to alert you.
- Once the target torque is reached, the wrench will emit a continuous tone and/or a red LED will illuminate, indicating that you should stop applying force. This 'click style' feedback helps prevent over-tightening.
Figure 3: The drive head and 'click style' mechanism for precise torque application.
5.5 Clockwise/Counter-clockwise Usage
The wrench is designed to measure torque in both clockwise and counter-clockwise directions. Ensure the ratchet direction switch on the drive head is set correctly for your application.
6. メンテナンス
- クリーニング： Wipe the wrench with a clean, dry cloth after each use. Do not use harsh chemicals or abrasive cleaners.
- ストレージ： Store the torque wrench in its original durable clear case in a dry, temperature-controlled environment. Remove batteries if storing for extended periods to prevent leakage.
- 較正： Digital torque wrenches should be recalibrated periodically by a qualified service center to maintain accuracy. Refer to the manufacturer's recommendations for calibration intervals.
Figure 4: The CRAFTSMAN Digital Torque Wrench stored in its durable clear case for quick identification and protection.
7。 トラブルシューティング
| 問題 | 考えられる原因 | 解決 |
|---|---|---|
| ディスプレイが機能しない | 電池切れまたは電池の取り付け間違い | 正しい極性を確認して電池を交換してください。 |
| 不正確な測定値 | Needs calibration; improper technique | Perform initial calibration (Section 4.2). Ensure smooth, steady force application. |
| No audible/visual alert | Settings adjusted; low battery | Check settings for alert activation. Replace batteries. |
8. 仕様
- モデル番号: CMMT99436
- ブランド： 職人
- ドライブサイズ: 1/2インチ
- トルク範囲： 50-250 ft./lb.
- 測定基準: SAE (ft./lb., in./lb.), Metric (Nm)
- ヘッドスタイル: 固定スクエア
- 動作モード: Electric (Digital)
- ラチェット: はい
- 材料： 金属
- 仕上げる： 粉体塗装
- アイテムの長さ: 29.64インチ
- 商品の重量: 5 ポンド
- 含まれるコンポーネント: (1) トルクレンチ
- コンプライアンス： ASME仕様を満たすかそれを超える
9. 保証とサポート
For warranty information, technical support, or service inquiries, please refer to the official CRAFTSMAN web購入サイトをご覧いただくか、カスタマーサービス部門にお問い合わせください。購入証明書としてレシートを保管してください。