KNAUER Repair Services India
KNAUER is a Berlin-based manufacturer of high-precision liquid chromatography systems, HPLC pumps, degassers, and analytical laboratory automation equipment. Founded in 1962, KNAUER has built a global reputation for reliability in pharmaceutical, chemical, and environmental analysis. Their equipment is widely deployed across Indian pharmaceutical manufacturers, contract research organizations, and quality control laboratories.
KNAUER is a Berlin-based manufacturer of high-precision liquid chromatography systems, HPLC pumps, degassers, and analytical laboratory automation equipment. Founded in 1962, KNAUER has built a global reputation for reliability in pharmaceutical, chemical, and environmental analysis. Their equipment is widely deployed across Indian pharmaceutical manufacturers, contract research organizations, and quality control laboratories.
Synchronics specializes in repair and maintenance of KNAUER HPLC systems, analytical pumps, degassers, and control electronics. With 180+ engineers and 30 years' experience repairing European analytical instrumentation, we service KNAUER equipment across India's pharma and chemical sectors. Our Vadodara facility handles pump repairs, detector calibration, pressure sensor restoration, and full system diagnostics for KNAUER analytical systems.
Expert KNAUER HPLC and analytical pump repair across India — 24-hour turnaround.
KNAUER Product Lines We Repair
Our engineers are trained on the full KNAUER product range. Below are the major product families we service.
KNAUER HPLC Pump Systems
High-pressure liquid chromatography pumps (up to 400 bar) used in pharmaceutical quality control and analytical testing. Common faults include pressure transducer drift, seal wear, and electronic pressure regulation failure.
KNAUER Degasser Units
Vacuum degassing systems that remove dissolved gases from mobile phase solvents. Faults typically involve pump motor failure, membrane rupture, or vacuum sensor malfunction affecting chromatography baseline.
KNAUER Detector Electronics
UV-VIS detector control modules and photodiode array electronics for HPLC systems. Common issues include detector lamp failure, PMT tube degradation, and amplifier circuit drift.
KNAUER Injector Valve Systems
Sample injection valve actuators and rotary valve electronics for automated HPLC. Faults include solenoid coil burnout, valve position sensor failure, and thermal runaway in electronic actuators.
KNAUER Column Oven Controllers
Precision temperature control modules for HPLC column compartments, maintaining +/- 0.1 degree C stability. Common failures: PID controller drift, thermistor sensor malfunction, heater element burnout.
KNAUER Data Acquisition Cards
Analog-to-digital interface cards and signal conditioning boards connecting KNAUER analytical systems to laboratory information management systems (LIMS). Failures: capacitor degradation, AD converter drift, USB interface corruption.
Why Choose Synchronics for KNAUER Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on KNAUER equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common KNAUER Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in KNAUER equipment arriving at our workshop.
- ✓KNAUER pump pressure drops below 5 bar unexpectedly — Internal pump piston seal degradation or cavitation due to air in mobile phase. KNAUER pumps are sensitive to improper degassing and solvent quality. Pressure transducer calibration drift also mimics this fault.
- ✓KNAUER degasser produces vacuum loss within 2 hours — Membrane micropores rupture from prolonged operation or chemical attack from aggressive solvents. KNAUER degassers must maintain 0.3 bar vacuum continuously; any leak causes baseline noise in UV detection.
- ✓KNAUER UV detector baseline drifts or shows noise spikes — Photodiode contamination, optical pathway misalignment, or PMT tube gain degradation in DAD detectors. Electronic amplifier offset drift also causes baseline instability in KNAUER 2500 UV systems.
- ✓KNAUER autosampler fails to inject sample or skips positions — Solenoid valve coil open circuit or valve spool stiction from salt precipitation in mobile phase. KNAUER injector position sensors may also lose calibration, causing the system to misidentify valve position.
- ✓KNAUER column oven temperature fluctuates or won't reach setpoint — PID controller tuning loss, thermistor sensor resistance drift, or heater element open circuit. KNAUER ovens use precision 10 kohm thermistors sensitive to vibration and age-related resistance shift.
- ✓KNAUER Smartline system loses communication with PC or LIMS interface — Corrupted CAN bus driver firmware, USB connector corrosion, or data acquisition card capacitor failure. KNAUER systems use proprietary serial protocols; noise on cables causes bit errors and connection dropouts.
How We Repair Your KNAUER Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using KNAUER Equipment
We serve plant maintenance teams across all major industries where KNAUER automation is deployed.
Frequently Asked Questions — KNAUER Repairs
Do you repair KNAUER equipment anywhere in India?+
Yes. Synchronics repairs the complete KNAUER HPLC and analytical instrumentation portfolio — pumps, degassers, detectors, injectors, ovens, and data interfaces. We offer PAN India pickup and delivery from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, and all other major cities. Our Vadodara facility provides same-location repairs with 48-hour turnaround for most faults.
How do I know if my KNAUER pump seal kit needs replacement?+
Common signs: pressure dropping below rated specs during a method run, audible grinding noise from the pump, or mobile phase leaking from pump head. KNAUER pumps typically need seal service every 1.5-2 years in high-use labs. Synchronics pressure-tests all pumps to 400 bar and certifies seal integrity before return. We also supply original KNAUER seal kits if you prefer in-house service.
Can Synchronics repair KNAUER detector modules or do I need factory service?+
Synchronics has full authority to repair KNAUER UV detectors, DAD modules, and amplifier boards. We perform optical alignment, photodiode cleaning, PMT tube replacement, and electronic calibration. Our test lab validates detector response with certified reference standards. For KNAUER systems under warranty, we coordinate with factory authorization — most repairs complete in-house in 2-3 days.
What causes KNAUER injector valve solenoids to burn out frequently?+
Sustained high-voltage spikes from switching inductive loads, mobile phase conducting salts causing micro-arcing, or undersized protection diodes on the driver circuit. Indian labs using saline or buffered mobile phases see accelerated solenoid failure. Synchronics tests solenoid coil resistance, replaces burnt units, and installs surge-suppression components to extend solenoid life by 3x.
Does Synchronics offer on-site calibration of KNAUER systems?+
Yes. Our field engineers visit your facility for column oven thermistor verification, UV detector absorbance calibration, pump pressure transducer linearity checks, and degasser vacuum testing. We carry calibration standards and diagnostic equipment. Full on-site service available for pharmaceutical QC labs across India — ideal for GMP-regulated environments requiring documented calibration records.
How do I send my KNAUER unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a KNAUER drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on KNAUER repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your KNAUER unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
KNAUER Repair Catalog
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Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service