How We Helped Our Customer Get Their Cooling Fan Motor Running?
From Online Support to On-Site Commissioning: How We Helped Our Customer Get Their Cooling Fan Motor Running?
When you're sourcing motors from overseas, the biggest question is always the same: “What happens if something goes wrong?”
We hear that from every customer. And honestly? It's a fair concern. You're investing in equipment that keeps your operation running – cooling fans for a factory, ventilation for a poultry house, or evaporative coolers for a warehouse. If a motor fails or doesn't perform as expected, downtime costs money. And if the supplier is thousands of miles away, who's going to fix it?
That's exactly why we flew one of our engineers to Pakistan this June – to commission a batch of cooling fan motors and controllers for a customer, and to show them firsthand what our after-sales support actually looks like.
The Customer and the Project
Our customer runs a large air cooler company in Pakistan, and they purchased a batch of our brushless DC motors and matching controllers – a complete cooling fan drive system.
The motors themselves are solid. We test every unit before it leaves the factory. But the customer's team had installed the motors and reported that several units weren't running smoothly. They'd tried swapping controllers, checking wiring, and re‑terminating connections – but the problem.
They reached out to us with photos and videos of the problematic units. We could have walked them through troubleshooting remotely. We do that all the time. But this was a larger order, and the issues didn't look like simple electrical faults. We needed to see the hardware in person. So we booked a flight.
Pre-Trip Prep – What We Did Before We Left
Before boarding the flight, we spent time with the customer reviewing their installation process step by step. They'd followed the manual – mounting bolts torqued correctly, wiring verified, controllers set to the right parameters. Nothing obvious stood out.
But the pattern of problems told a story. The issues appeared on multiple units, and they were mechanical, not electrical. The motors were binding, running rough, or refusing to turn freely by hand – classic signs of rotor/stator misalignment, assembly errors, or bearing fit problems.
We prepared a troubleshooting checklist, and confirmed the customer's site had the tools and test equipment we'd need. We also set up a shared channel with our R&D team back home – if we ran into something unexpected, they'd be on standby to help remotely.
On Site – Finding the Root Causes
Upon arriving at the site, we did indeed find some problems in the motor assembly. The following are the two most serious problems.
Problem 1: Stator and rotor not aligned
The air gap wasn't uniform. Tight on one side, wide on the other. That creates an unbalanced magnetic pull – the rotor gets pulled sideways, causing friction and extra load on the bearings. We loosened the stator bolts, centered the stator using the air gap as a reference, and re-torqued everything. The motor ran smoothly immediately.
Problem 2: Bearing housing tolerance issues
We measured the bearing seats in the end housings. Some were too tight – the bearings didn't slide in smoothly and had to be forced, which can pinch the bearing and cause binding. Others were slightly loose, allowing the bearing to shift off-center. A few hundredths of a millimeter off, and the entire motor's alignment goes out the window.
We selectively matched bearings to housings – the tight bores got bearings from the lower end of the tolerance range, the loose ones from the upper end – and got a proper fit on every unit. The problematic motors ran smoothly after reassembly.
Our engineer performing on-site commissioning.
What This Trip Tells Our Customers
We flew engineers to Pakistan for two reasons:
First, because we take our products seriously. If a customer spends money on our motors, we want them to work – not just "good enough," but exactly as specified. That means being willing to get our hands dirty when things don't go perfectly.
Second, because we know remote support isn't always enough. We do video calls, we share documents, we walk customers through troubleshooting steps over the phone. That works for 90% of issues. But when you're dealing with complex installations, different electrical standards, or unfamiliar equipment, sometimes you just need a pair of eyes on the ground.
Our After-Sales Commitment
No matter where you are, we offer the following services to every customer:
Remote technical support – Our engineers are available via call, email, or video to troubleshoot issues, review installation photos, and guide your team through adjustments.
On-site commissioning – For larger orders or complex installations, we can send an engineer to your site to supervise installation, tune controllers, and train your team.
Spare parts and documentation – We keep detailed records of every order, so we can quickly identify the right parts and parameters for your specific motors.
Continuous product improvement – Feedback from the field helps us refine our designs.
Final Thoughts
Buying motors from overseas doesn't have to mean taking a risk on support. We're not a "ship it and forget it" supplier. We're in this for the long haul – and that means being there when our customers need us, whether that's through a video call or a plane ticket.
If you're considering our motors for your cooling, ventilation, or industrial application and have questions about installation, commissioning, or support – reach out. We'd be happy to walk you through what to expect.
Contact us: info@volcaomotor.com