A recent study by Wier Group on Warman pumps. This research is related to the gold mine in Canada and it has examined the use of different pumps and the use of non-original parts. Located in Quebec, the mine has used two Warman AH 12/10 submersible pumps to drain a semi-self-propelled mill for 30 years since its inception. At the time of use of these pumps, the pumps were worn out in just 1600 hours due to the severe slurry abrasion. Research into the replacement of liners and non-original parts was offered to the company, but when Wier engineers rooted out the problem, the use of Warman MCR pumps replaced the use of non-original parts. The results showed that the use of non-original parts reduced the life of the pumps by 300 hours and thus required 6 replacements per year. In contrast, the Warman MCR 250 pumps achieved 3,000 hours of continuous operation and required only three annual replacements, reducing US $ 70,000 per year in replacement costs.
