HYDAC Repair Services India
HYDAC International is a German multinational specialising in hydraulic and electronic control solutions for industrial automation, mobile machinery, and fluid power systems. With over 60 years of engineering excellence, HYDAC supplies filtration, accumulators, proportional valves, and electronic controllers to OEMs and end-users across manufacturing, construction, and energy sectors. In India, HYDAC has a strong footprint in automotive, cement, steel, and heavy machinery industries where reliability and precision are non-negotiable.
HYDAC International is a German multinational specialising in hydraulic and electronic control solutions for industrial automation, mobile machinery, and fluid power systems. With over 60 years of engineering excellence, HYDAC supplies filtration, accumulators, proportional valves, and electronic controllers to OEMs and end-users across manufacturing, construction, and energy sectors. In India, HYDAC has a strong footprint in automotive, cement, steel, and heavy machinery industries where reliability and precision are non-negotiable.
Synchronics has 15+ years of hands-on expertise repairing HYDAC proportional valve controllers, electronic accumulator monitoring systems, and hydraulic proportional directional control units across Indian plants. We handle HYDAC HYP-PROP series proportional amplifiers, WSM electronic control modules, and FCE/FPU filtration automation controllers—the backbone of automated hydraulic systems in Indian manufacturing. Our engineers are trained on HYDAC diagnostic protocols and stock original spare parts, ensuring OEM-compliant repairs that restore production uptime without compromise.
Certified HYDAC proportional valve and electronic controller repair across 180+ Indian industrial facilities.
HYDAC Equipment We Repair — By Category
HYDAC Product Lines We Repair
Our engineers are trained on the full HYDAC product range. Below are the major product families we service.
HYP-PROP Proportional Amplifiers
Electronic control amplifiers for HYDAC proportional directional and pressure control valves. Common faults include solenoid coil burnout, signal conditioning failures, and PWM driver malfunctions that cause erratic valve spool movement or complete valve lockup in automated systems.
WSM Electronic Monitoring Modules
Wireless and hardwired electronic condition monitoring systems for HYDAC accumulators, filters, and pressure relief valves. Failures include pressure transducer signal loss, relay module faults, and CAN/IO-Link communication breakdowns that disable remote diagnostics.
FCE/FPU Filter Control Electronics
Automation controllers for HYDAC spin-on and return-line filtration systems with differential pressure sensing and blockage alarm logic. Typical failures involve pressure sensor drift, relay stiction, and microprocessor resets causing unwanted filter bypass or nuisance alarms in high-temperature mill environments.
HYDAC Pressure Relief Valve Electronics
Electronic pilot-operated and direct-acting proportional relief valve amplifiers with integrated load-sensing feedback. Repair issues include spool position transducer faults, feedback signal linearisation errors, and pressure overshoot instability in sudden shock-load applications.
HYDAC Accumulator Safety Switches
Electronic and electromechanical pressure switches with integrated piezoresistive transducers for accumulator isolation and precharge monitoring. Common failures include transducer drift in pulsating pressure environments and electrical connector corrosion on offshore/marine hydraulic platforms.
HYDAC Proportional Directional Valve Spools
Multi-stage proportional spool cartridge valves with LVDT position feedback and integrated proportional solenoids. Failures stem from spool stiction due to hydraulic fluid contamination, LVDT coil insulation breakdown, and proportional magnet demagnetisation under vibration.
Why Choose Synchronics for HYDAC 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 HYDAC 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 HYDAC Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in HYDAC equipment arriving at our workshop.
- ✓HYP-PROP Proportional Amplifier Solenoid Burnout — HYDAC proportional solenoids on directional control valves fail when proportional current loops run open-circuit or when transient voltage spikes from contactor switching bypass amplifier protection circuits. High ambient temperatures in closed-loop steel mill environments accelerate insulation degradation.
- ✓WSM Electronic Module CAN Communication Timeout Faults — HYDAC WSM modules on accumulator monitoring networks drop offline due to CANopen cable shield grounding loops, 24VDC supply ripple exceeding 500mV peak, or microprocessor firmware corruption from transient EMI on factory floors with large motor starters and welding equipment.
- ✓FCE Filter Control Pressure Transducer Drift Above 60°C — Differential pressure transducers on HYDAC return-line filters in hot-oil circuits suffer zero-offset drift and gain nonlinearity because the silicon die and potentiometer track resistance change unequally with temperature, causing false blockage alarm thresholds that trigger nuisance shutdowns.
- ✓LVDT Spool Position Transducer Nonlinearity and Hysteresis — Proportional directional valve spool LVDTs on HYDAC proportional valves develop nonlinear output because the ferrite core shifts axially over millions of actuation cycles, or the secondary coil winding shifts inside the bobbin tube, introducing 5-10% signal error that destabilises closed-loop pressure control.
- ✓Proportional Solenoid Magnet Demagnetisation Due to Vibration — HYDAC proportional solenoids in high-vibration environments (>0.3g continuous on reciprocating pumps or shakers) suffer mechanical shock that causes neodymium or samarium-cobalt permanent magnet fragments to flake, reducing holding force and solenoid response time by 30-50% over 12-18 months.
- ✓Hydraulic Fluid Contamination Causing Proportional Spool Stiction — HYDAC proportional directional valve spools with tight tolerances (typically 0.04-0.08mm clearance) become stuck when hydraulic fluid ISO VG 46 degrades to ISO 15/13/10 or worse due to water ingress, oxidation, or ferrous wear debris. The spool cannot respond to proportional command signals, and manual override lever also becomes stiff.
How We Repair Your HYDAC 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 HYDAC Equipment
We serve plant maintenance teams across all major industries where HYDAC automation is deployed.
Frequently Asked Questions — HYDAC Repairs
Do you repair HYDAC equipment anywhere in India?+
Yes. Synchronics repairs the complete HYDAC product range — proportional amplifiers, WSM electronic modules, filter control units, proportional directional valves, and accumulator switching systems. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Bangalore, Ahmedabad, Jaipur, and all other major cities. All repairs are processed at our 180-engineer facility in Vadodara, Gujarat, with turnaround of 5-7 working days for most HYDAC electronics.
What is the typical repair cost for a HYDAC HYP-PROP proportional amplifier?+
HYDAC HYP-PROP amplifier repairs cost INR 8,000-15,000 depending on fault severity. Solenoid coil rewinds cost INR 6,000-8,000. Full amplifier board replacement with recalibration runs INR 12,000-18,000. We provide free diagnostic testing and a written quotation before repair. Most customers find our repair cost is 40-60% less than OEM new-unit replacement.
Can Synchronics repair HYDAC WSM accumulator monitoring modules with firmware corruption?+
Yes. HYDAC WSM modules that show CAN timeout errors or fail to communicate on CANopen networks often have corrupted microprocessor firmware. Synchronics has access to HYDAC firmware images for all WSM-02 through WSM-16 variants. We reprogram the module's flash memory, reconfigure node ID and baud rate parameters, and test communication on a live CANopen test bench before shipment back to your plant.
How do I know if my HYDAC proportional valve spool is damaged or just contaminated?+
A stiff or unresponsive HYDAC proportional directional valve can be either mechanical damage or fluid contamination. Synchronics uses ultrasonic flushing and pressure-decay testing to diagnose root cause. If spool is stuck due to particles, we perform offline flushing. If spool shows scoring or corrosion, we lap the spool lands and replace proportional solenoids and seals. We bench-test response time and flow curves before returning the valve to your service.
Do you stock HYDAC spare parts for emergency repairs?+
Yes. Synchronics maintains buffer stock of common HYDAC replacement parts including proportional solenoid coils (HYP-PROP series), WSM 24VDC power supply modules, differential pressure transducers for FCE filter controllers, and LVDT spool position sensors. For OEM parts not in stock, we coordinate rapid import from HYDAC Germany within 48-72 hours. Emergency same-day dispatch is available for critical production stoppages in Metro cities.
How do I send my HYDAC 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 HYDAC 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 HYDAC 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 HYDAC 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.
HYDAC Repair Catalog
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Back in Action — Fast
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