Air-cooled chiller compressor unloader valve repair

Air-Cooled Chiller Compressor Unloader Valve Repair | EKG (Malaysia) Sdn Bhd

Why Unloader Valve Repair Is Important

• Ensures accurate compressor capacity control

• Prevents hard starts and overloading

• Reduces energy consumption and cycling stress

• Protects internal compressor components from strain

• Supports smooth and stable cooling performance

Common Unloader Valve Issues We Repair

• Valve stuck in open or closed position

• Intermittent or failed actuation during load/unload cycles

• Leaking unloader piston or diaphragm

• Solenoid coil failure or electrical fault

• Oil or refrigerant contamination affecting valve movement

Symptoms of a Faulty Unloader Valve

• Compressor short cycling or failing to unload

• Inconsistent suction pressure or refrigerant flow

• High amperage draw during start-up

• Cooling capacity drops under part-load conditions

• Unusual vibration or noise during load transitions

Our Unloader Valve Repair Process

• Diagnosis and Inspection
  We begin by inspecting the unloader system, testing the solenoid coil, pressure response, and valve actuation. We use:

  • Electrical testing equipment

  • Suction/discharge pressure monitoring

  • Thermal and vibration analysis

• Component Repair or Replacement
  Based on our findings, we:

  • Clean or replace blocked or contaminated valve components

  • Repair or install new solenoid coils or valve actuators

  • Replace gaskets, springs, pistons, or diaphragms as needed

  • Adjust timing or pressure control settings for accurate operation

• Testing and Recommissioning
  After repairs, we verify:

  • Proper valve actuation and sealing

  • Smooth load/unload performance

  • Stable operating pressures

  • Balanced compressor cycling and current draw

Benefits of Unloader Valve Repair

• Restores full compressor functionality and efficiency

• Reduces mechanical stress and energy usage

• Improves part-load performance and system responsiveness

• Prevents future breakdowns or electrical overload

• Supports reliable and optimized HVAC operation

Why Choose EKG (Malaysia) Sdn Bhd?

• Experts in compressor control and valve systems

• Experience with scroll, screw, and reciprocating compressors

• Familiar with all major air-cooled chiller brands and valve types

• Quick turnaround and precision repair work

• Full support from diagnosis to performance validation

Final Thoughts

A faulty unloader valve can quietly drain performance and drive up costs. With EKG (Malaysia) Sdn Bhd’s air-cooled chiller compressor unloader valve repair, you restore smooth, efficient operation and avoid bigger problems down the road. Contact us today to schedule an inspection or repair service!