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Freelance Trainer Maintenance, Troubleshooting

3 weeks ago

Dubai, Dubai, United Arab Emirates Solomon People Soluitons Full time

Freelance Trainer on "Maintenance, Troubleshooting & Overhaul of Solenoid Valves (1", 2" & 3") and Internal Assemblies"

Course Overview

This 5-day intensive program is designed for technicians and maintenance engineers responsible for inspection, servicing, troubleshooting, and overhaul of industrial solenoid valves (1", 2" and 3").

The course focuses on field-relevant maintenance skills including diaphragm replacement, bleed screw servicing, flow control stem adjustment, internal cleaning, coil testing, and root cause analysis of failures.

The program blends theory with extensive hands-on sessions using real valves, cut-section models, and fault simulation rigs to ensure participants gain practical confidence.

Learning Objectives

By the end of the course, participants will be able to:

  • Identify all major components of 1", 2" and 3" solenoid valves.
  • Understand the working principle of different solenoid valve types (Direct Acting, Semi-Direct Acting, Pilot Operated).
  • Diagnose common field failures in solenoid valves.
  • Safely disassemble, inspect, and reassemble solenoid valves.
  • Service and replace critical internal parts:
  • Diaphragms
  • Bleed screws
  • Flow control stems
  • Seals & springs
  • Pilots and plungers
  • Perform electrical testing on solenoid coils.
  • Set and calibrate flow and pressure adjustments.
  • Implement preventive maintenance schedules.
  • Reduce recurrence of solenoid valve failures through root cause analysis.

Target Audience

This course is ideal for:

  • Maintenance Technicians
  • Mechanical Fitters
  • Electrical Technicians
  • Instrumentation & Control Technicians
  • Maintenance Supervisors
  • Utility & Plant Engineers
  • Water Treatment / HVAC / Process Plant Maintenance Staff

Pre-requisite: Basic knowledge of mechanical maintenance or industrial equipment handling.

Training Methodology

The course uses a balance of:

  • Classroom Theory Sessions
  • Hands-on Practical Exercises
  • Live Valve Disassembly & Assembly
  • Fault Simulation and Troubleshooting
  • Case Studies from Industrial Scenarios
  • Tool Handling & Measurement Practice
  • Daily Recap & Q&A
  • Final Practical Assessment & Certification

Detailed 5-Day Course Structure

Day 1: Fundamentals & Construction of Solenoid Valves

Theory:

  • Introduction to solenoid valves (applications & classifications)
  • Types: Direct Acting, Semi-Direct Acting, Pilot Operated
  • Valve sizing concepts for 1", 2", and 3" lines
  • Materials of construction: Brass, SS, Cast Iron
  • Pressure, temperature, and fluid considerations

Component Breakdown:

  • Coil and enclosure
  • Plunger/armature
  • Diaphragm assembly
  • Bleed screw mechanism
  • Flow control stem
  • Orifice & pilot ports
  • Seals, springs, and gaskets

Practical:

  • Identification of components using cutaway models
  • Reading and understanding manufacturer datasheets
  • Safe isolation and tagging procedures

Day 2: Internal Assemblies & Their Functions

Theory:

  • Function of diaphragm & pilot orifice
  • Working of bleed screw mechanism
  • Role of flow control stem in flow regulation
  • Internal pressure balancing mechanism
  • Typical wear patterns and failure mechanisms

Practical:

  • Full disassembly of 1" and 2" solenoid valves
  • Inspection of diaphragms for cracks, warping, and stiffness
  • Examination of bleed screws and pilot holes for blockages
  • Flow control stem dismantling and cleaning

Day 3: Troubleshooting & Failure Diagnosis

Theory:

  • Common problems:
  • Valve not opening/closing
  • Coil burning
  • Leakage through diaphragm
  • Slow response time
  • Valve chatter
  • Electrical troubleshooting basics:
  • Coil resistance testing
  • Voltage supply verification
  • Insulation testing
  • Mechanical troubleshooting methods

Practical:

  • Simulated faults in test rigs
  • Root cause identification
  • Replacement of faulty parts
  • Reassembly with correct torque and sealing

Day 4: Servicing, Calibration & Preventive Maintenance

Theory:

  • Servicing procedures for:
  • Diaphragms
  • Bleed screws
  • Flow control stems
  • O-rings and seals
  • Valve cleaning methods (chemical & mechanical)
  • Adjustment of flow control stems
  • Setting pressure limits

Practical:

  • Complete overhaul of:
  • 2" and 3" solenoid valves
  • Flow calibration testing
  • Leak testing using test bench
  • Maintenance documentation & checklists

Day 5: Advanced Maintenance & Final Assessment

Theory:

  • Advanced maintenance strategies
  • Designing preventive maintenance intervals
  • Failure trends and lifecycle management
  • Spare parts planning & storage practices

Practical:

  • Complete maintenance cycle simulation:
  • Fault detection
  • Isolation
  • Dismantling
  • Repair
  • Testing
  • Recommissioning

Assessment:

  • Written knowledge test
  • Practical hands-on evaluation
  • Feedback & Certification

Job Types: Part-time, Temporary, Contract

Contract length: 12 months

Pay: AED50.00 per hour

Expected hours: 40 per week