Job Description

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