Engineering and Mining Journal - Whether the market is copper, gold, nickel, iron ore, lead/zinc, PGM, diamonds or other commodities, E&MJ takes the lead in projecting trends, following development and reporting on the most efficient operating pr
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MAINTENANCE The CJC Mobile Flushing Unit pumps oil even at very low temperatures. ferential, planetary, etc.) pushing contaminated oil back through the cellulose depth filters. The 3 µm CJC MFU Filter Inserts capture approximately 5060 lb of particulates, dirt and varnish while adsorbing residual water. Oil 84 E&MJ; • AUGUST 2013 cleanliness is continuously measured with the online CJC Oil Contamination Monitor. This unit is versatile enough to work in the confines of a shop or the harsh environments found in the most rugged job sites. The CJC Mobile Flushing Unit has been tested in some of the harshest climates. In one example, Mobile SHC 680 gear oil from a 320-ton Komatsu 930E haul truck was flushed in the field at below freezing temperatures (-4ºC). Within 90 minutes, the contaminant level was reduced from ISO 25/25/23 (>16 million particles at 4 µm) down to an ISO 16/15/11 (<64,000 particles at 4µm). Based on the following Life Extension Table published by Noria Corp. (See p. 86), this will essentially extend the life of the lubricant and equipment by 3.5 times. When another operation went to fill a new Cat 7495 shovel with oil, they realized the new oil at ISO 23/19/14 was eight times dirtier than the OEM requirement of ISO 19/17/14. Thus, they could not transfer oil to the shovel until it had been cleaned without voiding the warranty. After several attempts to clean and transfer the oil through the on-board filters, a CJC Mobile Flushing Unit was brought in. Each 200-l (52-gal) batch of oil was cleaned to ISO 14/13/11 within 30 minutes and then transferred to the shovel. By pre- www.e-mj.com