The Powerex reciprocating compressor is available in single and two stage models. Continuously lubricated, sealed bearings provide oil- free compressed air and long compressor life. The onboard fan, finned flywheel and temperature reducing composite piston create lower operating temperatures. DRY TYPE INLET FILTER The inlet filter on the oilless compressor assures 99% of particulate free air, down to 10 micron, is admitted to the unit. Change every 2500 hours or more often in dirty locations (See Figure 5). PISTON AND PISTON RINGS The Powerex oilless reciprocating compressor pistons are made of a high- strength, self-lubricating composite using the most advanced technology available. These heat reducing pistons eliminate the effect of excessive grease leakage at the wrist pin bearing. Specifications Teflon® rings reduce wear and provide self lubrication. Piston rings should be replaced every 10,000 hours of operation (See Figure 12). BEARING REGREASE The wrist pin bearings of the OPS and OPT oilless compressors are needle bearings protected by two outer lip seals. This needle bearing becomes impacted and requires regreasing at 5,000 hours (See Figure 15). BEARING SEALS The wrist pin bearing lip seals prevent the lubricating grease from leaking from the bearing area. The two lip seals on each connecting rod require replacement every 10,000 hours (See Figure 1622 or page 9). Installation INSTALLATION SITE 1. The oilless compressor must be located in a clean, well lit and well ventilated area. 2. The area should be free of excessive dust, toxic or flammable gases and moisture. 3. Never install the compressor where the ambient temperature is higher than 105o F or where humidity is high. ! DANGER Breathable Air Warning This compressor/pump is NOT equipped and should NOT be used “as is” to supply breathing quality air. For any application of air for human consumption, you must fit the compressor/pump with suitable in-line safety and alarm equipment. This additional equipment is necessary to properly filter and purify the air to meet minimal specifications for Grade D breathing as described in Compressed Gas Association Commodity Specification G 7.1 - 1966, OSHA 29 CFR 1910. 134, and/or Canadian Standards Associations (CSA). DISCLAIMER OF WARRANTIES In the event the compressor/pump is used for the purpose of breathing air application and proper in-line safety and alarm equipment is not simultaneously used, existing warranties are void, and Powerex disclaims any liability whatsoever for any loss, personal injury or damage. Max. SCFM @ No. of Flywheel Weight Model HP PSIG 100 PSIG RPM Cyl. Bore Stroke O.D. Drive (lbs.) 1 145 3.6 625 1 2.56 2.56 11.2 1 GR-A 28 OPS 010 1.5 5.3 885 OPS 030 2 145 6.6 845 2 3 10.1 1115 OPT 050 5 145 17.2 860 2 OPT 100 7.5 145 27.5 855 3 10 35.0 1090 OPT 150 15 145 47.0 1140 3 2.56 4.31 x 2.95 3.54 x 2.95 4.13 x 2.95 2.36 3.35 3.35 3.35 13.8 16.9 18.3 19.6 1 GR-B 53 2 GR-B 110 2 GR-B 165 2 GR-B 170 Powerex • 150 Production Drive • Harrison, OH 45030 • USA IN258603AV 9/04 Oilless Reciprocating Air Compressor Pumps 4. Clearance must allow for safe, effective inspection and maintenance. Minimum Clearances Above 24” Drive belt side 12” Other sides 20” 5. If necessary, use metal shims or leveling pads to level the compressor. Never use wood to shim the compressor. VENTILATION 1. If the oilless compressor is located in a totally enclosed room, an exhaust fan with access to outside air must be installed. 2. Never restrict the cooling fan exhaust air. 3. Never locate the compressor where hot exhaust air from other heat generating units may be pulled into the unit. WIRING Refer to the general safety guidelines manual. All electrical hook-ups must be performed by a qualified electrician. Installations must be in accordance with local and national electrical codes. Use solderless terminals to connect the electric power source. PIPING Refer to the general safety guidelines manual. 1. Make sure the piping is lined up without being strained or twisted when assembling the piping for the compressor. 2. Appropriate expansion loops or bends should be installed at the compressor to avoid stresses caused by changes in hot and cold conditions. 3. Piping supports should be anchored separately from the compressor to reduce noise and vibration. 4. Never use any piping smaller than the compressor connection. 5. Use flexible hose to connect the outlet of the compressor to the piping so that the vibration of the compressor does not transfer to the piping. Make sure the flexible hose is rated for proper pressure and temperature before installing. SAFETY VALVES Tank mounted compressors are shipped from the factory with safety valves installed in the tank manifold. The flow capacity of the safety valve is equal to or greater than the capacity of the compressor. 1. The pressure setting of the safety valve must be no higher than the maximum working pressure of the tank. 2. Safety valves should be placed ahead of any pos...

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