Most electrical failures in a plant give some warning first: a connection running hot, a motor drawing more current than it used to, a drive logging the same fault every week. A planned industrial electrical maintenance program is how you catch those signs before they become an unplanned shutdown. For Manitoba plants, where equipment deals with temperature swings, dust, moisture and long production runs, the program needs to be practical, scheduled and written down. Here is how to build one that your team will actually follow.

Start With an Equipment Inventory and Risk Ranking

You cannot maintain what you have not listed. Begin by building an inventory of your electrical assets, from the main service and switchgear down to motor control centres, panels, transformers, drives and critical motors.

Then rank each item by what happens if it fails:

• Critical: failure stops production, creates a safety hazard or has no ready spare
• Important: failure slows production or affects one line, with a workaround available
• General: failure is an inconvenience and can be fixed during normal hours

Critical equipment gets the most frequent inspections and the most detailed records. This ranking also tells you where to keep spare parts and which items need a documented recovery plan.

Involve the people who run the equipment. Operators and maintenance staff usually know which motor runs warm or which panel trips in cold weather, and that knowledge belongs in the ranking.

Core Tasks in an Industrial Electrical Maintenance Program

CSA Z463 provides guidance on maintenance of electrical systems and is a sensible framework for structuring your program. In practice, most plant programs are built around a handful of recurring tasks.

Thermal scans

Infrared scanning of panels, switchgear, MCCs and disconnects under normal load finds loose or corroded connections, overloaded circuits and compromised components before they fail. Scans need to be done with equipment energized and loaded, so they must be planned with proper safety controls under CSA Z462.

Connection checks and cleaning

During shutdowns, de-energized equipment can be opened for torque checks, cleaning of dust and debris, and inspection for heat discolouration, moisture or pest damage. Hot spots found on thermal scans should be confirmed and corrected here.

Motor and drive checks

Track motor current, insulation condition, vibration and bearing temperature on critical motors. For VFDs, check cooling fans and filters, review fault histories and confirm parameter backups are current. A drive that keeps faulting on the same condition is telling you something.

Protective devices and controls

Breakers, overloads, interlocks and emergency stops should be tested on a schedule. Control panels deserve a look too: failing power supplies, loose terminals and corroded communication connectors cause many intermittent faults.

Power factor correction and distribution equipment

Capacitor banks used for power factor correction should be checked for bulging or leaking units, blown fuses and failed contactors, since a bank that has quietly stopped working rarely draws attention on the plant floor. Transformers and distribution panels should be inspected for overheating, unusual noise and signs of moisture, particularly in unheated buildings or areas exposed to washdown.

Records That Make the Program Useful

A maintenance program without records is just a series of service calls. Good records let you spot trends, justify replacement budgets and show insurers and auditors that equipment is being cared for.

For each inspection, record:

• The equipment, date and who did the work
• Readings taken, such as temperatures, currents and insulation values
• Deficiencies found and their priority
• Corrective actions completed and any still outstanding
• Thermal images with notes, kept alongside the previous scan for comparison

Keep single line diagrams and panel schedules up to date as part of the same record set. When something goes wrong at night, accurate drawings save time and reduce risk for whoever responds.

Planning Around Shutdown Windows

Much of the most valuable maintenance requires equipment to be de-energized, which means it has to fit into planned shutdowns. Treat those windows as limited and valuable.

• Do thermal scans in the weeks before a shutdown, so findings become a repair list for the outage
• Prioritize the list by risk ranking, since you will rarely finish everything
• Order parts in advance, including breakers, contactors and terminals likely to need replacement
• Combine electrical, controls and mechanical work in one window to avoid a second outage
• Assign a single coordinator who tracks what was finished and what carries over

Our industrial electrical services include preventative maintenance, system upgrades and the coordination needed to get the most out of each shutdown.

Warning Signs Your Current Approach Is Not Working

• The same breakers or drives keep tripping and get reset rather than investigated
• Nobody can find the last thermal scan report
• Panel labels do not match what is actually installed
• Maintenance only happens after something fails
• Arc flash labels are missing or the information behind them is out of date

If several of these sound familiar, start with a site walk and an inventory rather than trying to fix everything at once. Review our safety practices to see how CEEG handles work on and around energized equipment.

Frequently Asked Questions

How often should industrial electrical maintenance be done?

It depends on equipment criticality, environment and manufacturer guidance. Critical equipment in dusty or damp areas needs more frequent attention than general equipment in clean spaces. CSA Z463 is a useful reference for setting intervals.

Can thermal scans be done without a shutdown?

Yes. Scans are done while equipment is energized and under load, which is why they are useful for planning the repairs that do require a shutdown.

What if something fails between scheduled visits?

CEEG provides 24/7 emergency electrical service for commercial and industrial clients across Manitoba.

Build a Maintenance Program That Fits Your Plant

CEEG works with plants in Winnipeg, Brandon, Steinbach, Selkirk, Portage la Prairie and across Manitoba to set up industrial electrical maintenance programs that match their equipment, shutdown schedules and staff. We can start with an inventory and thermal scan, then help you build a plan your team can sustain.

To get started, request a project quote or call 204-306-2121.