Sino MDT SN-50 Series Service Manual

Syringe pump

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Sino Medical-Device Technology Co., Ltd.

SN-50 Series

Syringe Pump Service Manual

Ver. 1.0

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Ksj samarasing

July 14, 2025

Please explane Err2 model SN 50c6t

Summary of Contents for Sino MDT SN-50 Series

Page 1 Sino Medical-Device Technology Co., Ltd. SN-50 Series Syringe Pump Service Manual Ver. 1.0...
Page 2 SN-50 Series Syringe Pump Service Manual Safety Instruction Note: this manual contains three types of safety tips: Danger, Warning, and Caution. Before reading this manual, you must have a clear understanding of these safety tips, which are defined as follows: Danger: means when the situation described becomes inevitable, it may cause severe personal injury to the operators, patients or other people in the vicinity.
Page 3 SN-50 Series Syringe Pump Service Manual Caution: Don not maintain and repair this equipment until you have carefully read and fully understand the safety instructions described in the service manual and user manual. Before the maintenance and repair, you must have a clear understanding of various types of marking and labeling.
Page 4 SN-50 Series Syringe Pump Service Manual General In accordance with electrical safety classification, SN-50 series syringe pump falls into category I, CF type, non-portable devices with internal power supply. SN-50 series syringe pump in IPX4 rating is splash-resistant equipment. Only the syringes conforming to national standards and approved with medical certificate can be used.
Page 5 SN-50 Series Syringe Pump Service Manual Contents Chapter 1 General............................1 1.1 Product Overview..........................1 1.2 Models and Signification.......................1 1.3 Working Principle......................... 1 1.4 Technical Characteristics and Parameters..................2 1.4.1. Speed Adjustment Range....................2 1.4.2. Accuracy.......................... 2 1.4.3. Rapid Bolus Injection Rate....................2 1.4.4.
Page 6 SN-50 Series Syringe Pump Service Manual 5.6. Power Board..........................23 5.7. Drive Board..........................24 5.8. Pressure Sensor..........................25 5.9. Motor............................26 5.10. Pusher............................27 5.11. Syringe Specification Identification Board................28 5.12. Fixing Clamp.......................... 29 Chapter 6 Performance Test.......................... 30 6.1. Preparation for test equipments & articles...................30 6.2.
Page 7 SN-50 series syringe pump can use a maximum of 50 kinds of 10ml, 20ml, 30ml or 50ml disposable sterile syringes (hereinafter referred to as syringe) described on this unit.
Page 8 SN-50 Series Syringe Pump Service Manual Technical Characteristics and Parameters 1.4.1. Speed Adjustment Range 50ml syringe: 0.1ml/h~1500ml/h, adjustment step length within 1000ml : 0.1ml/h, above 1000nl/h: 1ml/h 30ml syringe: 0.1ml/h～900.0ml/h, adjust step length of 0.1ml/h 20ml syringe: 0.1ml/h～600.0ml/h, adjust step length of 0.1ml/h 10ml syringe: 0.1ml/h～400.0ml/h, adjust step length of 0.1ml/h...
Page 9 SN-50 Series Syringe Pump Service Manual 1.4.8. Alarms To ensure safety and reliability in the injection process, this series of products feature the following alarming functions: Residue alarm, injection completion alarm, pipe blockage alarm, no clamping alarm, installation error alarm for syringe pusher, off-limit rate...
Page 10 SN-50 Series Syringe Pump Service Manual 1.4.11. Overall Dimension Model Overall Dimension (W*H*D) mm Function SN-50F6 354×190×128 Dual channel for one unit SN-50C6 306×135×127 Single channel for one unit SN-50C6T 306×135×127 Single channel for one unit with body-weight mode 1.4.12. Net Weight SN-50F6: 3.5kg (including clamp seat)；...
Page 11 Service Manual Chapter 2 Description of Operation Button Function 2.1. Appearance SN-50 series include: SN-50C6 (single-channel model), SN-50F6 (dual-channel model), SN-50 series include: SN-50C6 (single-channel model), SN-50F6 (dual-channel model), SN-50C6T (single-channel model with body-weight mode). SN-50C6T (single-channel model with body-weight mode).
Page 12 SN-50 Series Syringe Pump Service Manual...
Page 13 SN-50 Series Syringe Pump Service Manual...
Page 14 SN-50 Series Syringe Pump Service Manual 2.2 Description of Operation Buttons and Display Functions Symbol Name Function When the injection is started or underway, if Syringe pressing the pressing block is not in the right place, or block installation it has detected circuit failure, or the syringe...
Page 15 SN-50 Series Syringe Pump Service Manual When the injection pressure exceeds the set Occlusion limit level, the Occlusion alarm indicator will alarm flash on, and give out intermittent audible indicator B C D alarm. When the residual liquor in the syringe is only Nearly 1.5mm ±...
Page 16 SN-50 Series Syringe Pump Service Manual Switch between 4 menu options, that is, rate Select key setting, volume limit setting up, blockage alarm threshold setting and syringe code. Parameter Display of the SN-50C6T Unit with body-weight mode LCD screen Display the setting parameters under displaying a number kg/body weight mode.
Page 17 SN-50 Series Syringe Pump Service Manual Chapter 3 Unit Construction and Working Principle 3.1. Equipment Composition and Functions The syringe pump is composed by system control board (hereinafter referred to as control board), power module, power control boards, motor drive board, slide board, piston testing board, residue testing board, rack and pusher.
Page 18 SN-50 Series Syringe Pump Service Manual 3.1.1 System Control Board The system control board is intended to send control commands, manage man- machine interface, display parameters and acquire data. SN-50C6 SN-50C6T system control board can only control one channel, while SN-50F6 system control board can simultaneously control two channels.
Page 19 SN-50 Series Syringe Pump Service Manual 3.1.10 Rack It is designed to provide power transmission to complete the injection process. It can also provide fixed support for such four components as driving board, motor, residual testing board and pusher. 3.1.11 Pressure Sensor It will convert the pressure change in the pipe to electrical signals, which will then be sent to the system control board.
Page 20 SN-50 Series Syringe Pump Service Manual 3.2.3.1. Push Injection Pressure The injection pressure is transmitted to the driving surface of pressure sensor mounted at the end of the rack through the pusher, drive nut and screw. The pressure sensor will send the collected pressure signal to CPU of the control board.
Page 21 SN-50 Series Syringe Pump Service Manual Chapter 4 General Troubleshooting 4.1. System Error Description 4.1.1 System Error ERR1 During the system self-test process, if any button is pressed or not released after being pushed down, this will result in the termination of system self-test process and report on ERR1 error.
Page 22 SN-50 Series Syringe Pump Service Manual 4.2. Possible Problems during Use and Troubleshooting Table 1 Problems Possible Causes and Troubleshooting Start-up ERR1 alarm 1. During self-test, the user makes operations – restart the equipment; 2. If the foil can not bounce, return to the supplier for maintenance;...
Page 23 SN-50 Series Syringe Pump Service Manual ERR3 alarm in 1. Failure Description Code E3: the wiring between control operation board and motor drive board fails; 2. Failure Description Code E4: the motor drive board fails; 3. Failure Description Code E5: the motor fails;...
Page 24 SN-50 Series Syringe Pump Service Manual 4.4. Troubleshooting Table 3 Failure Description Troubleshooting Failure Description Code E1: the foil can not Replace the foil. bounce； Failure Description Code E2: the control board Replace control board; see fails. Section 5.5 for the replacement process.
Page 25 SN-50 Series Syringe Pump Service Manual Chapter 5 Replacement, Assembling, Test and Debugging of Main Components and Parts 5.1. Preparation of Tools Digital multimeter with precision at 1.0 1 set Medium-sized cross screw-driver 1 piece “V”-shaped slot-type screw-driver 1 piece...
Page 26 SN-50 Series Syringe Pump Service Manual 5.3. Power Module Power modules of SN-50C6, SN-50C6T and SN-50F6 are fixed on the rear housing using M3X10 self-tapping screw. The wires to be connected include: AC input power cord, DC output power cord and grounding protection wire.
Page 27 SN-50 Series Syringe Pump Service Manual 5.4. Batteries The batteries of SN-50C6, SN-50C6T and SN-50F6 are installed in the battery box on the rear housing and the battery box is fixed by 3 pieces of M3X10 self-tapping screws. 1. Battery cover 2.
Page 28 SN-50 Series Syringe Pump Service Manual 5.5. Control Board Both SN-50C6 and SN-50C6T are equipped with single channel control board, and can be substituted mutually; SN-50F6 is two-channel control board. The control board is installed on the front housing and fixed by M3X6 self-tapping screws.
Page 29 SN-50 Series Syringe Pump Service Manual 5.6. Power Board Power boards of SN-50C6 and SN-50C6T shall be installed on the front housing; among which, the latter is furnished with LED. Power board of SN- 50F6 is installed on rear housing and fixed by 4 pieces of self-tapping screws.
Page 30 SN-50 Series Syringe Pump Service Manual 5.7. Drive Board The drive board shall be installed on the rack and be fixed by 3 pieces of M3X6 screws. Figure 11 Drive Board Replacement procedures: 1. Plug off the plugs of drive board, residual testing board, the syringe specification identification board and motor;...
Page 31 SN-50 Series Syringe Pump Service Manual 5.8. Pressure Sensor The pressure sensor, which falls into the category of variant sensor, is mounted on the back board of rack by one M3X16 hexagon bolt. The testing pusher will experience resistance change in the pushing process. When the resistance exceeds the setting value, it will send out the blockage alarm.
Page 32 SN-50 Series Syringe Pump Service Manual 5.9. Motor The motor is mounted on the motor fixed board of rack assembly by 3 M3X14 bolts. One end of the motor is connected with the component of power transmission by gear, while the other end is installed with photoelectric coded disk.
Page 33 SN-50 Series Syringe Pump Service Manual 5.10. Pusher The pusher is connected to the rack by the slide block. The pulling bar of the pusher is connected with the drive nut. Torsion spring makes the drive nut and lead screws closely meshed to finish the power transmission.
Page 34 SN-50 Series Syringe Pump Service Manual 9. Fit the driving screw to the D surface of the pusher (note: the driving screw’s thread face to leadscrew), with the right hand using “V” shape slot type screwdriver to press the shot foot of tensional spring down and surpass the driving screw, at this moment, use left hand to push the driving screw to the slide block, loosen “V”...
Page 35 SN-50 Series Syringe Pump Service Manual Replacement procedures: 1. Plug off the plug on the syringe specification board; 2. Unscrew 2 pieces of fixing screws from the “L” shape plate 3. Screw off the screws which connect the syringe specification board and “L”...
Page 36 SN-50 Series Syringe Pump Service Manual Chapter 6 Performance Test Performance test is to determine whether the performance and function of equipments satisfy the technical requirements after maintenance. 6.1. Preparation for test equipments & articles Digital multimeter, accuracy class: 1.0 1 piece;...
Page 37 SN-50 Series Syringe Pump Service Manual identification corresponding syringe specification indicator turns on. “Residual indication” red light flashes and produces a Residual warning discontinuous warning sound for indication. “Injection finish” red light flashes and produces a Warning after warning sound, at the same time, the digital tube shows injection 0.5ml/h.
Page 38 SN-50 Series Syringe Pump Service Manual Chapter 7 Technical Documents 7.1. Parts/components Drawing Parts/components drawing of SN-50C6/C6T front housing components Frame parts/components drawing Pusher parts/components drawing 7.2. Parts/components list SN-50 series micro-injection pump parts/components list Pusher parts/components list Frame parts/components list...
Page 39 SN-50 series syringe pump Service Manual Parts/components Drawing of SN-50C6/C6T Front Housing Seria Part No. Part Specification QTY. Unit l No. Description 10-H02604 Pusher assembly 06-H02610 Front housing M450600T3X640 Cross recessed pan head tapping T-head, M3X6, 10-H02701 Power board 10-H02700...
Page 40 SN-50 series syringe pump Service Manual Parts/components Drawing of SN-50F6 Rear Housing Serial Part No. Part Specification Description QTY. Unit 06-H02681 RS232 dust cover Anion-cation separation column, M45200001C81E British system, 1/8 06-H02651 Rear case 10-H02701 Power board M45080001C81E Hex nut, British system, 1/8...
Page 41 SN-50 series syringe pump Service Manual Frame Parts/components Drawing Serial Part No. Part Specification QTY. Unit Description 06-H02613 Guide bush M20820KG30X8Y Cantilever beam pressure sensor 20KG 30*8.5*6MM 06-H02621 Rear board 06-H02616 Body 06-H02620 Rectangular Screw M45100M3X610 Cross recessed pan head M3X6...
Page 42 SN-50 series syringe pump Service Manual Pusher Parts/components Drawing Serial Part No. Part Specification QTY. Unit Description 06-H02637 Toggle 06-H02677 Plug silica gel M451400M2X610 Cross recessed pan head M2X6 06-H02636 Pusher chamber front case M4521ERE10C00 E-circlips for shaft RE- 06-H02642...
Page 43 SN-50 series micro-injection pump Service Manual List of parts & components for SN-50 series syringe pump Unit: PCS Part/component No. Specification description of parts/components 50C6 50C6T 50F6 amount amount amount 10-H02700 Control board 06-H02650 Single protective film for buttons 10-H02701...
Page 44 SN-50 series micro-injection pump Service Manual Part/component No. Specification description of parts/components 50C6 50C6T 50F6 amount amount amount 10-H02705 Syringe specification identification board 06-H02649 PCB Fixed frame 06-H02667 Pad A 06-H02668 Pad B 06-H02669 Pad C SN-50C6 syringe specification 06-H02717 identification board connection FFC flexible flat cable, 05.
Page 45 SN-50 series micro-injection pump Service Manual Part/component No. Specification description of parts/components 50C6 50C6T 50F6 amount amount amount 06-H02654 Fixed seat, aluminum alloy, painting Fixed frame chuck, aluminum alloy, 06-H02655 painting Fixed frame spring, piano wire & steel 06-H02657 string...
Page 46 SN-50 series micro-injection pump Service Manual Part/component No. Specification description of parts/components 50C6 50C6T 50F6 amount amount amount Cross recessed pan head, M2.5X6, M4514M2D5X610 stainless steel Anion-cation separation column, British M45200001C81E system, 1/8, stainless steel M50020M6D3570 Ball, Φ6.35mm ±0.025, nylon...
Page 47 SN-50 series micro-injection pump Service Manual Pusher parts/components list Green Part/component Specification description of pusher Blue pusher parts/components amount amount (PCS) (PCS) Syringe inspection button (blue) 06-H02815 ABS+PPT 06-H02816 Upper popper (blue) ABS+PPT 06-H02817 Lower popper (blue) ABS+PPT 06-H02818 Toggle (blue) ABS+PPT...
Page 48 SN-50 series micro-injection pump Service Manual Green Part/component Specification description of pusher Blue pusher parts/components amount amount (PCS) (PCS) M4521ERE10C00 E-circlips for shaft RE-10C Pusher chamber front case (blue) 06-H02635 ABS+PPT Pusher chamber rear case (blue) 06-H02636 ABS+PPT 06-H02637 Button ABS+PPT...
Page 49 SN-50 series micro-injection pump Service Manual Frame parts/components list Specification description of Parts/components No. Amount (PCS) parts/components 06-H02621 Rear board, LY12, natural oxidation Body, aluminum profile, natural 06-H02616 oxidation 06-H02632 Slider, nylon 06-H02629 Guide rod, stainless steel 06-H02620 Rectangular lead screw, 40Cr, black out...
Page 50 SN-50 series micro-injection pump Service Manual Specification description of Parts/components No. Amount (PCS) parts/components M45100000M410 Spring washer, M4, stainless steel M45100000M310 Spring washer, M3, stainless steel M450500M4X540 Inner hexagon fastening, M4X5 M45090000M310 Flat washer, M3, stainless steel M4509D3D7D270 Flat washer, Φ3*Φ7*2, nylon...
Page 51 SN-50 series micro-injection pump Service Manual Sino Medical-Device Technology Co., Ltd. Add: Room 2-D-2, Huake Building, Oriental Hi-Tech Industrial Park, OTC Nanshan District, Shenzhen, P.R. China Post Code: 518053 Tel.: +86 0755-26755692 Fax: +86 0755-26755687 Service Hotline: +86 0755-26756166 Web:...

This manual is also suitable for:

Sn-50f6 Sn-50c6 Sn-50c6t