Table of Contents
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®
Thank you for purchasing the HAKKO 474 Desolder-
ing Tool.
Please read this manual before operating the HAKKO
474.
Keep this manual readily accessible for reference.
CAUTION
Remove the pump securing screw (M4×25
marked red) from the bottom of the station.
Failure to do so may result in serious prob-
lems.
Table of Contents (English)
1. Packing List ......................................................... 1
2. Specifications ...................................................... 1
3. Precautions ......................................................... 2
4. Part Names (Desoldering Gun/Station) ............ 3
5. Operation
(Preparation-
Assembly and Connection) .... 4 • 5
(Desoldering) ........................... 5 • 6
(Cleaning during Operation) ......... 7
(Problems during Desoldering) . 7• 8
(Post-operation Maintenance) ...... 8
(Troubleshooting Guide) ............... 8
6. Maintenance (Desoldering Gun) ................. 9 • 10
(Station) .......................................11
7. Replacement Parts
(Replacing Heating Element)...... 12
8. Parts List
(Station) ............................... 13 • 14
(Desoldering Gun) ...................... 15
9. Replacement Parts ............................................ 15
1 0. Wiring ................................................................ 16
Instruction Manual
使用說明書
日本白光牌
l
l
吸錫槍
承蒙惠顧 , 謹致謝忱。
使用 HAKKO 474 之前 , 請詳閱本使用說明書 , 正
確使用。
閱後請妥為收存 , 以備日後查閱。
使用之前必須除去機身底下的泵拴緊螺絲
（Ｍ４×25 紅色記號 ), 否則可能導致嚴重後
果。
1. 包裝清單 ......................................................................... 17
2. 規格 . ................................................................................. 17
3. 安全及使用上的注意事項............................................ 18
4. 部件名稱 （ 吸錫槍／控制臺） ..................................... 19
（準備 --- 裝配和連接） .......................20．21
（吸錫） ..................................................21．22
（使用時 , 進行清理工作） ......................... 23
（除錫時發生故障） . ...................................... 23
（使用後的保養） ......................................... 24
（排除故障指南） ......................................... 24
6. 保養
（吸錫槍） ..............................................25．26
（控制臺） ...................................................... 27
7. 更換部件 ......................................................................... 28
8. 部件清單 （ 控制臺） ..............................................29．30
（吸錫槍） ...................................................... 31
1 0. 電路圖 ............................................................................. 16
●
●
注意
目錄 ( 中文 )
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Summary of Contents for HAKO 474
- Page 1 ® 吸錫槍 Instruction Manual 使用說明書 日本白光牌 ● Thank you for purchasing the HAKKO 474 Desolder- 承蒙惠顧 , 謹致謝忱。 ing Tool. 使用 HAKKO 474 之前 , 請詳閱本使用說明書 , 正 Please read this manual before operating the HAKKO 確使用。 474. 閱後請妥為收存 , 以備日後查閱。 Keep this manual readily accessible for reference.
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Page 2: Packing List
1. Packing List Please check to make sure that all the items listed below are included in the HAKKO 474 package. Station ............. 1 Spring Filter ............. 3 Desoldering Gun..........1 Cleaning Pin (for ø1.0mm [0.04 in] nozzle) .... 1 Iron Holder Base..........1 Cleaning Pin (for Heating Element) ....1 Spring Iron Holder ........... 1 Cleaning Pin Holder......... 1 Cleaning Sponge .......... - Page 3 3. Precautions In this instruction manual, “WARNING” and “CAUTIONS” are defined as follows. WARNING WARNING: Misuse may potentially cause death of, or serious injury to the user. CAUTION : Misuse may potentially cause injury to the user or physical damage to the objects involved. For your own safety, be sure to comply with these precautions. CAUTION Remove the pump securing screw (M4×25 marked red) from the bottom of the station. Failure to do so may result in serious problems. When the power is on, the nozzle temperature is between 380°C/716°F and 480°C/ 896°F. Since mishandling may lead to burns or fire, be sure to comply with the following precautions. l Do not touch the metallic parts near the nozzle, nearby plastic parts and the spring iron holder. l Do not use the product near flammable items. l Advise other people in the work area that the unit can reach a very high tem- perature and should be considered potentially dangerous. l Turn the power off while taking breaks and when finished using the unit. l Before replacing parts or storing the unit, turn the power off and allow the unit to cool to room temperature. To prevent damage to the unit and ensure a safe working environ- ment, be sure to comply with the following precautions. l Do not use the unit for applications other than desoldering. l Do not rap the desoldering gun against the work bench to shake off residual solder, or otherwise subject the iron to severe shocks. l Do not modify the unit. l Use only genuine HAKKO replacement parts. l Do not wet the unit or use the unit when your hands are wet. l Set the ceramic paper filter (S) for the filter retainer (station), and the ceramic paper filter (L) for the filter pipe (gun). l Maintain the desoldering gun and the station. l While using the unit, don’t do anything which may cause bodily harm or physi- cal damage. CAUTION: This product includes such features as electrically conductive plastic parts and grounding of the handpiece and station as measures to protect the device to be soldered from the effects...
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Page 4: Part Names
4. Part Names (Refer to p.19, 20 & 21 for part nos.) l Desoldering Gun Nozzle Transmits heat for melting solder, En- Filter Pipe trance for melted solder. Set the ceramic paper filter (L) (No.A1033). Expendable part. Contains melted solder and flux using filters. Filters are expendable parts. Back Holder As- sembly Secures the filter pipe. Release Knob Push down to remove the filter pipe. Heating Element Inside requires cleaning. Indicator Indicates when nozzle and heating element Trigger need cleaning and Squeeze to start absorption. when filters need Do not pull the trigger before replacing. fully heating the nozzle. (refer to p.9) Hose Connects to the vacuum outlet cap (station). -
Page 5: Operation
5. Operation Spring Iron Holder Preparation-Assembly and Connection (No.B1094) Assemble the HAKKO 474 on a flat surface. Cleaning Pin Holder (No.B1095) 1. Remove the pump securing screw (M4 × 25 marked red) from the bottom of the station. Tube(red) Securely insert the cleaning pin holder. 2. Assemble the iron holder. • Set the spring iron holder and Cleaning Sponge cleaning pin holder in the iron holder base. -
Page 6: Power Switch
1 and 2 Single-sided P.W.B. 3 and 4 Through-hole P.W.B. 1. Set the temperature. 5 and 6 Multilayer P.W.B. CAUTION Lock CAUTION Always set the temperature to as low Never insert the cleaning pin in the as possible for the work being done. Unlock hole of temp. control set screw clamp. • To more precisely set the tempera- As this may result in damage to the Secure the temperature unit. ture, measure the temperature at control set screw clamp with the nozzle using a soldering iron a cross point screwdriver. thermometer and adjust the tem- perature control knob accordingly. We recommend the HAKKO 191 thermometer or HAKKO 192 soldering tester for measuring the nozzle tem- perature. • The temperature control knob can be secured by tightening the tem- perature control set screw clamp (“+” screw) at the top of the HAKKO 474 unit. - Page 7 2. Clean the tip of the nozzle. • Keep the solder-plated section of the nozzle a shiny white by coating it with a small amount of solder. If the tip of the nozzle is coated with oxide, the nozzle’s heat conductivity will be lowered. Coating the tip with a small amount Wipe away any oxide or old solder of fresh solder ensure maximum heat from the nozzle using the hole in conductivity. the center of the sponge. 3. Melt the solder. • Apply the nozzle to the soldered part and melt the solder. Nozzle CAUTION Never allow the nozzle to touch the P.W.B. board itself. Solder Lead • Confirm that the solder is melted. CAUTION To confirm that all solder is melted, observe the inside of the hole and the backside of the P.W.B. If this is difficult to do, try slowly moving the lead with the nozzle – If the lead moves, the solder is melted.
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Page 8: Replacing The Filter
5. Operation Heated solder and flux can cause oxides to form and adhere to the nozzle and the inside of the heating element. These oxides not only lower the heat conductivity, but can also clog the nozzle and heating element, resulting in a drop in suction efficiency. Should there be a noticeable drop in suction efficiency during operation, replace the filter and clean the nozzle and heating element with the provided cleaning pin. Cleaning during Operation Normal Abnormal Solution 1. Observing the indicator If the indicator is more than While looking at the indicator and half red, replace the filter with the hole of the nozzle open, and clean the nozzle and pull the trigger and look at the in- Blue or slight More than half the inside of the heating dicator. If it is red, clean the nozzle amount of red of the indicator element. can be seen. is red. (refer to p.12 Maintenance and heating element, empty the of the Desoldering Gun) filter pipe, and replace the filters. If the indicator is blue, cleaning is not CAUTION : If there is a noticeable drop in suction necessary and operations can be efficiency, clean the nozzle and heating ele- resumed. -
Page 9: Troubleshooting Guide
Packing and nearby parts Post-operation Maintenance n Remove all solder from the inside of the nozzle and heating element. To ensure a long service life, always per- n Clean the tip of the nozzle with the cleaning sponge, then coat the tip form the following maintenance procedures with a fresh layer of solder to protect the solder plating. immediately after using the HAKKO 474 unit. Troubleshooting Guide WARNING : If the power cord is damaged, it must be replaced by the manufacturer, its service agent or similarity qualified person in order to avoid personal injury or damage to the unit. l Power lamp does not light up. • Is the power cord plugged in correctly. Securely insert the power cord into the power supply. • Is the fuse blown? Determine why the fuse blew and eliminate the cause, then replace the fuse. Example Is the inside of the gun short-circuited? l Pump does not operate. -
Page 10: Maintenance
6. Maintenance (Desoldering Gun) Properly maintained, the HAKKO 474 desoldering gun should provide years of good service. Efficient desoldering depends upon the temperature, and the quality and quantity of the solder and flux. Per- form the following service procedures as dictated by the conditions of the gun’s usage. WARNING : Since the desoldering gun can reach a very high temperature, please work carefully. Except when cleaning the nozzle and heating element, always turn the power switch off and discon- nect the power plug before performing any maintenance procedure. Servicing the Desoldering Gun Cleaning with the nozzle cleaning pin CAUTION The desoldering gun will be extremely hot. During maintenance, please wear gloves and work carefully. 1. Inspect and clean the nozzle. The cleaning pin passes com- • Plug in the power cord, turn the pletely through the hole. power switch On and let the nozzle Cleaning with the cleaning drill heat up. -
Page 11: Replace The Filters
4. Replace the filters. Front Holder • Turn the power switch OFF, • When the filter pipe is cool to the touch, push down the release knob at the back of the gun and remove the filter pipe. Spring Filter Ceramic Paper Filter (L) CAUTION (No.A1033) The filter pipe is very hot. • Examine the front holder. Replace Stiff and cracked. • Examine the spring filter. Replace Solder is collected in two-thirds of the spring filter. • Examine the ceramic paper filter (L). Replace (No.A1033) Ceramic paper filter is stiff with flux and solder. 5. Secure the filters. • Attach the spring filter to the front holder • Attach the front holder to the filter pipe. - Page 12 6. Maintenance (Station) Cleaning the inside of the Filter Case 1. Replace the ceramic paper VACUUM filter (No.A1009). Remove the ceramic paper filter and inspect it. If it is stiff with flux, replace it. Apply silicone grease to the O-ring (S20) and securely tighten the vacuum outlet cap to prevent air leakage. 2. Reassemble the filter case. Secure the vacuum outlet cap. Filter Retainer CAUTION Set the ceramic paper filter (S) for the filter retainer (station). Using the ceramic paper filter (L) in the Ceramic Paper Filter (S) filter retainer may cause to break or the (No.A1009) power to drop. Remove the filter retainer and push out the ceramic paper filter.
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Page 13: Replacement Parts
7. Replacement Parts Replacing the Heating Element WARNING Unplug the power cord before starting this procedure. The resistance value of a working heating element is 2-4Ω at 23°C (73° Remove the filter pipe. F). If the value you get is outside this range, replace the heating element. 1. Disassemble the heating parts. Housing 2. Separate the housing. 3. Detach the terminal and re- Unscrew the screws. move the heating element. Detach 4. Insert a new heating ele- the terminal. -
Page 14: Parts List
8. Parts List (Station) Note: Spare or repair parts do not include mounting screws, if they are not listed on the description. Item No. Part No. Part Name Specifications B1029 Vacuum outlet cap A1009 Ceramic paper filter (S) 10 pcs. B1063 Filter retainer B1031 Vacuum outlet retainer W/O-ring (S20) B1034 O-ring (S20) B1038 Cover for securing screw Set of 4 B1036 Receptacle B1028 Knob B2061 Front panel B1093 Cover One side B1061 Handle One side B1044 Temp. control set screw clamp B2057 P.W.B. - Page 15 Pan Head Screw with Washer M4×8 (2) External Tooth Lock Washer nominal size 4 Pan Head Screw M3×55 Tapping Screw M2.6×6 (2) Tapping Screw M2.6×6 (4) Pan Head Screw with Washer M3×6 (2) Pan Head Screw with Washer M4×30 Pan Head Screw with Washer Pan Head M4×8 (2) Screw with Washer Spacer nominal M4×8 size 4×25 Pan Head Screw M5×10 (4) Spring Washer nominal size 4 (4) Hexagon Nut Pan Head Screw M4 (4) M4×25 Item No. Part No. Part Name Specifications Item No.
- Page 16 8. Parts List (Desoldering Gun) Pan Head Screw (Sus) M2.6×7 (3) Item No. Part No. Part Name Specifications A1314 Front holder Tapping Screw A1030 Spring filter Set of 10 M3×5 A1033 Ceramic paper filter (L) Set of 10 B2073 Filter pipe W/front holder & filters A1012 O-ring (P12) B1018 Back holder assembly W/O-ring (P12) B1019 Release knob Pan Head Screw B1020 Spring for release knob M2.6×3 B2074 Housing W/screws B1023 Hose A1319 Packing Item No.
- Page 17 10. Wiring P.W.B. TRANS TRANS Motor Black Receptacle Power Switch White Transformer Power Cord Fuse Holder 10. 電路圖 印刷電路板 TRANS TRANS 馬達 黑色 插座 電源開關 白色 變壓器 電源線 保險絲套...
- Page 18 1. 包裝清單 請檢查 HAKKO 474 包裝內容 , 確保下列部件全在其內。 控制臺 ................1 彈簧過濾器 ..............3 吸錫槍 ................1 清潔針 ( 供 φ1.0mm 吸嘴使用 ) ......1 吸錫槍架基座 .............1 清潔針 ( 供發熱元件使用 ) ........1 彈簧式吸錫槍支架 ............1 清潔針插架 ..............1 清潔海綿..............1 清潔鑽 ( 供 φ1.0mm 吸嘴使用 ) ......1 過濾管 ................1 硅脂潤滑劑 ..............1...
- Page 19 3. 安全及使用上的注意事項 本使用說明書如下所述將注意事項區分為「警告」 「注意」來表示。請理解其含意後再閱讀本文。 警 告 警 告： 濫用可能導致使用者死亡或重傷。 注 意： 濫用可能導致使用者受傷或對涉及物體造成實質破壞。 注 意 使用之前必須除去控制臺底下的泵拴緊螺絲 (M4×25 紅色記號 ), 否則可能導致嚴重後果。 當電源接通時 , 吸嘴溫度介於 380 至 480℃。 鑒于濫用可能導致灼傷或火患 , 請嚴格遵守以下事項。 ● 切勿觸及吸嘴周圍的金屬部分 , 塑料部分和彈簧式吸錫槍支架。 ● 切勿在易燃物體附近使用吸錫槍。 ● 通知工場其他人士 , 吸錫槍極為炙熱 , 可能引發危險事故。 ● 休息時或完工後 , 應關掉電源 , 並待吸錫槍冷卻至室溫。 ● 更換部件或裝配吸錫槍時...
- Page 20 4. 部件名稱 請查閱第 29,30,31 頁之部件編號。 ●吸錫槍 吸嘴 傳熱以熔化焊錫。 過濾管 焊錫的入口。 裝有陶瓷過濾紙 ( 大 )( 編號 A1033) 是耗損部件。 過濾管內部是放置所吸入的焊錫和助焊劑。 是耗損部件。 後握器組件 拴緊過濾管。 鬆開鈕 壓下可取出過濾管。 發熱元件 內部需要清理。 指示器 指示吸嘴和發熱元件需要 清理 , 過濾管需要更換。 扳機 ( 請參閱第 23 頁 ) 擠壓時即可吸錫。 吸錫未達到高熱時 , 切勿拉動扳機。 軟管...
- Page 21 5. 使用 彈簧式吸錫槍支架 準備 --- 裝配和連接 ( 編號 B1094) 在平面臺上裝配 HAKKO 474。 清潔針插架 ( 編號 B1095) 1 請鬆開控制臺底下的泵拴緊螺 絲 (M4×25 紅色記號 )。 管子 ( 紅色 ) 2 裝配吸錫槍支架 插緊清潔針插架 ． 裝彈簧式支架和清潔針插架插入基 座。 ． 裝清潔海綿浸在水中 , 取出擠乾。 清潔海綿 注意 海綿是壓縮體 , 濕水後會膨脹。應移去 海綿的圓環部份。 吸錫槍支架基座...
- Page 22 工作時 , 應儘量調低溫度。 注意 鎖緊 ． 為了更精確調節溫度 , 先用焊鐵溫度 切勿將清潔針插入溫控定位螺絲夾的孔徑裡 , 這會損壞吸錫槍。 計測量吸錫溫度 , 然後依此調節溫控 鬆開 鈕的溫度。 注意 使用十字帽螺絲起子 , 切勿將清潔針插入溫控定位螺絲夾的孔徑裡 , 拴緊溫控定位螺絲夾。 這會損壞吸錫槍。 我們建議使用 HAKKO 191 溫度計 , 或 HAKKO 192 焊鐵測試器 , 以測 量吸嘴溫度。 ． 拴緊 HAKKO 474 控制臺頂端的溫控 定位螺絲夾 ( ＋字帽螺絲 ), 以鎖定溫 控鈕。...
- Page 23 2 清理吸嘴 ． 以少量焊錫在吸嘴的焊錫鍍層部份 塗上保持吸嘴有光澤。 如果吸嘴覆蓋有氧化劑 , 導電能力 便減弱。在吸嘴頭鍍上少量新焊 錫 , 可發揮最大導電功能。 利用海綿中央位置的孔徑 , 以清除吸嘴上的氧化劑或舊焊錫。 3 熔化焊錫 ． 將吸嘴觸及所要熔化的焊錫部位。 注意 切勿讓吸嘴觸及印刷電路板。 吸嘴 ． 確定焊錫已被熔化 注意 印刷電路板 要確定焊錫是否已完全被熔化 , 可觀察 焊錫 孔徑內和印刷電路板的背面。 引線 如果有困難 , 則可用吸嘴稍搖動引線腳 , 如果可以移動 , 則表示焊錫已被熔化。 4 吸除焊錫 ．確定焊錫已完全被熔化後 , 擠壓吸錫 槍扳機...
- Page 24 5. 使用 發熱的焊錫和助焊劑會產生氧化物 , 附著在吸嘴上和發熱元件內部。這些氧化物不但降 低熱傳導 , 也會阻塞吸嘴和發熱元件 , 以致吸力減弱。如果工作進行時 , 發現吸力顯著減 弱 , 即需更換過濾管 , 並以所供應的清潔針 , 清理吸嘴和發熱元件。 使用時 , 進行清理工作 正常 不正常 解決方法 1 觀察指示燈 如果指示燈一半以上是紅 觀察指示燈 , 吸嘴孔必須張開。 色 , 需更換過濾管 , 並清理 拉動扳機 , 再觀察指示燈。如果是紅 吸嘴和發熱元件的內部。 ( 請 色...
- Page 25 吸嘴接觸點和發熱元件 d. 軟管 b. 過濾管前端蓋及其周圍部件 e. 真空出口蓋 c. 後握器的圓環 f. 連接電線裝配及其周圍部件 使用後的保養 使用 HAKKO 474 吸錫槍後 , 應依照右列程 ．清除吸嘴內和發熱元件的焊錫。 序進行保養 , 以確保經久耐用。 ．用清潔海綿清理吸嘴後 , 在吸嘴頭鍍上一層新焊錫 , 以保護鍍吸層。 排除故障指南 警告 如果電源線損壞 , 應請製造商 , 或其代理商 , 或合格人士更換 , 以 免發生傷人或損壞機身事故。 ● 電源指示燈不亮 ? ．...
- Page 26 6. 保養 ( 吸錫槍 ) 妥善保養 HAKKO 474 吸錫槍 , 保持高性能 , 可使用多年。 吸錫效率視溫度 , 焊錫和助焊劑的質量和數量而定。請根據吸錫槍的使用條件 , 依照下列維修程 序進行保養。 警告 吸錫槍可達到極高溫度 , 應小心使用。除了清潔吸嘴及發熱元件以外 , 必須維持電源線是關的。 當進行任何保養之前電源插頭必須是未連接的。 吸錫槍維修 以清潔針清理吸嘴 注意 吸錫槍十分炙熱 , 維修時 , 應戴上手套 , 小心工作。 1 檢查和清理吸嘴 清潔針完全貫通吸嘴孔徑 ． 將插頭插入電源插座 , 電源開關...
- Page 27 前端蓋 4 更換過濾管 ． 電源開關按 " 關 "。 ． 當過濾管冷卻而可用手觸摸時 , 按下 吸錫槍背面的鬆開鈕 , 取出過濾管。 注意 過濾管非常炙熱。 彈簧過濾管 陶瓷過濾紙 ( 大 ) ( 編號 A1033) ． 檢視前端蓋。 更換 僵硬且裂開。 ． 檢視彈簧過濾管。 更換 彈簧過濾管積儲三分之二焊錫時。 ． 檢視陶瓷過濾管 ( 大 ) 更換 ( 編號 A1033) 陶瓷過濾紙因淤積焊錫和助焊劑而僵硬。 5 旋緊過濾管 ． 將彈簧過濾管安裝在前端蓋。...
- Page 28 6. 保養 ( 控制臺 ) 清理過濾管內部 1 更換陶瓷過濾紙 ( 編號 A1009) VACUUM 取出陶瓷過濾紙檢視 , 如果塞滿助焊 劑而僵硬 , 應更換。 將圓環 (S20) 抹上硅脂潤滑劑 , 旋緊真 空出口蓋 , 防止空氣泄漏。 2 重裝過濾管內部 注意 以陶瓷過濾紙 ( 小 ) 裝入 ( 控制臺 ) 濾槽 護圈。 旋緊真空出口蓋 若錯以陶瓷過濾紙...
- Page 29 7. 更換部件 更換發熱元件 警告 先拔下電源插頭 , 才開始更換程序。 正常發熱元件於 23℃時 , 其電阻值是 2 ∼ 4Ω。如果超出這個範圍 , 應更換發 熱元件。 取出過濾管 1 拆開發熱元件 護艙 2 打開護艙 3 拔開終端 , 取出發熱元件 鬆開螺絲 4 置入新的發熱元件 , 重新回裝 ( 發熱元件 24V-50W) 解開終端 玻璃管 注意 在重新封合前 , 應確定接頭部份必須完 全置入玻璃管內。 用玻璃管封蓋連接部位。...
- Page 30 8. 部件清單 ( 控制臺 ) 註 : 安裝螺絲如果在說明表內沒有記載時 , 請另外訂購。 圖號 部件編號 部件名稱 規格 B1029 真空出口蓋 A1009 陶瓷過濾紙 ( 小 ) 10 個 B1063 過濾紙護圈 B1031 真空出口護圈 包括圓環 (S20) B1034 圓環 (S20) B1038 拴緊螺絲護罩 1 套 4 件 B1036 插座 B1028 旋鈕...
- Page 31 大柱頭螺釘 附有墊圈 M4×8(2) 外用齒 鎖墊圈公稱 尺寸 4 大柱頭螺釘 M3×55 攻絲頭螺釘 M2.6×6(2) 攻絲頭螺釘 M2.6×6(4) 大柱頭螺釘 附有墊圈 M3×6(2) 大柱頭螺釘 附有墊圈 M4×30 大柱頭螺釘 附有墊圈 M4×8 大柱頭螺釘 附有墊圈 M4× 8 隔離管公稱 尺寸 4×25 Pan Head Screw M5×10 (4) 彈簧墊圈公稱尺寸 大柱頭螺釘 4(4) M5×10(4) 六角螺帽 M4(4) 圖號 部件編號 部件名稱 規格 圖號...
- Page 32 8. 部件清單 ( 吸錫槍 ) 大柱頭螺釘 ( 不鏽鋼 ) M2.6×7(3) 圖號 部件編號 部件名稱 規格 A1314 前端蓋 攻絲頭螺釘 M3×5 A1030 彈簧過濾管 10 個 A1033 陶瓷過濾紙 ( 大 ) 10 個 B2073 過濾管 包括前端蓋與過濾管 A1012 圓環 (P12) B1018 後握器組件 包括圓環 (P12) 大柱頭螺釘 B1019 鬆開鈕...
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