DRIVE MAINTENANCE
Annual Maintenance Contract
VFD
Annual Maintenance Contracts (AMC) for AC Drives — also known as Variable Frequency Drives or VFDs — are specialized service agreements designed to ensure the reliable, efficient, and uninterrupted operation of industrial automation equipment. Unlike standard air-conditioning AMCs, these focus on the power electronics, control boards, and cooling systems of the drive units to prevent costly industrial downtime.
Types of Maintenance Contracts
Comprehensive Maintenance Contract
Covers both service / labour charges and the cost of most spare parts.
Non-Comprehensive (Ordinary) AMC
Covers only the service and labour for regular maintenance and breakdown calls — spare parts are billed separately.
Key Maintenance Activities
Cleaning & Inspection
Dismantling and cleaning of power boards, control boards, bus bars, and heat sink chambers to remove dust and debris.
Component Testing
Testing of IGBTs, thyristors, DC link capacitors, and cooling fans to ensure they stay within operational limits.
Thermal Management
Checking the status of thermal paste and re-applying it when dry to prevent overheating.
Performance Verification
Measuring voltage levels, verifying proper airflow, and testing the drive under full load conditions.
Benefits of an AMC
Minimized Downtime
Proactive maintenance identifies potential component failures before they cause a system shutdown.
Extended Equipment Life
Regular servicing and cleaning significantly increase the lifespan of sensitive electronic components.
Priority Support
Contract holders receive faster response times and preferential scheduling for emergency breakdown services.
Predictable Budgeting
Fixed annual costs help businesses avoid surprise expenses from major emergency repairs.
PANEL MAINTENANCE
Annual Maintenance Contract
Control Panel
Annual Maintenance Contracts (AMCs) for control panels are service agreements between a business and a service provider — often the manufacturer or a specialized engineering firm — to ensure the regular inspection, cleaning, and repair of electrical or automation panels over a 12-month period. These contracts are critical for minimizing costly industrial downtime and extending the lifespan of expensive equipment.
Types of Maintenance Contracts
Comprehensive AMC
Covers both labour and the cost of spare parts and components — e.g. PLCs, PCBs, or circuit breakers.
Non-Comprehensive / Labour-Only AMC
Covers only the service and labour charges. Any replacement parts required are billed separately to the customer.
Standard Scope of Work
Preventive Maintenance
Routine visits — often quarterly or monthly — for cleaning, lubrication of moving parts, and tightening of electrical connections.
Emergency Support
On-call assistance for sudden breakdowns, typically with a guaranteed response time, e.g. 24/7 support.
Testing & Diagnostics
Load testing, insulation resistance measurement, and software / firmware updates for PLC and SCADA-based panels.
Safety Compliance
Ensuring the panel meets local safety standards through regular grounding and circuit protection checks.
Benefits of Having an AMC
Cost Predictability
Helps avoid sudden, large expenses by converting maintenance into a fixed annual cost.
Expert Care
Access to specialized technicians familiar with specific brands like ABB, Siemens, or Schneider Electric.
Priority Service
AMC customers receive priority over on-call requests during peak times or emergencies.