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ROCKING PISTON OIL-LESS PUMPS
O
Model 74R Shown
Thank you for purchasing this Gast product. It is manufactured to the highest standards
using quality materials. Please follow all recommended maintenance, operational
and safety instructions and you will receive years of trouble free service.
IMPORTANT: PLEASE READ THIS MANUAL AND SAVE FOR FUTURE REFERENCE.
Product Use Criteria:
• Pump only clean, dry air.
• Operate at 32ºF - 104ºF (0ºC - 40ºC).
• Protect unit from dirt & moisture.
• Do not pump flammable or explosive gases or
use in an atmosphere that contains such gases.
• Protect all surrounding items from exhaust air. This
exhaust air can become very hot.
• Corrosive gases and particulate material will
damage unit. Water vapor, oil-based contaminants
or other liquids must be filtered out.
• Consult your Gast Distributor/Representative
before using at high altitudes.
• This pump is oil-less and requires NO lubrication.
®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.
74R & 75R SERIES
& M
PERATION
AINTENANCE
ISO 9001 & 14001 CERTIFIED
PART NO. 70 - 6850 G496PL (REV-D)
M
ANUAL
Model 75R6 Shown
www.gastmfg.com
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Related Manuals for Gast 74R
Summary of Contents for Gast 74R
- Page 1 • Consult your Gast Distributor/Representative before using at high altitudes. • This pump is oil-less and requires NO lubrication. www.gastmfg.com ISO 9001 & 14001 CERTIFIED ®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.
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Page 2: Installation
Check others. The safety alert symbol and the words filters periodically and replace when necessary. Consult “DANGER” and “WARNING” will precede all safety your Gast Distributor/Representative for additional filter messages. These words mean: recommendations. DANGER Install relief valves and gauges at inlet or outlet or both, to monitor performance. -
Page 3: Operation
Minimum gage for extension cords Amps Volts Length of cord in feet 120v 150 200 250 300 400 500 240v 100 200 300 400 500 600 800 1000 Grounded Plug Grounding Pin 8-10 120-volt grounded connectors 10-12 shown. 220/240-volt grounded 12-14 Grounded Outlet connectors will differ in shape. -
Page 4: Maintenance
Gast will NOT guarantee field-rebuilt product 3. Remove filter cover. performance. For performance guarantee, the 4. Check filter felt. Replace felt if it is covered with product must be returned to a Gast Authorized contamination or shows signs of increasing Service Facility. differential pressure. -
Page 5: Warranty
Gast Manufacturing Incorporated, PO Box 97, Benton Harbor Michigan USA 49023-0097 or an authorized Service Center (unless specifically agreed upon in writing signed by both parties or specified in writing as part of a Gast OEM Quotation). Buyer is responsible for freight charges both to and from Gast in all cases. - Page 6 B300A SERVICE KIT K806 K806 * 74R shown. *** Item not shown. ∆ Denotes parts included in the Service Kit. Parts listed are for stock models. For specific OEM models, please consult the factory. When corresponding or ordering parts, please give complete model and serial numbers.
- Page 7 EXPLODED PRODUCT VIEW, PARTS & ORDERING INFORMATION DESCRIPTION 75R6 CAP SCREW BB750 CAP SCREW BB516C HEAD AP200A AP201A 4 ∆ HEAD O-RING AP109 VALVE LIMITER AP110 6 ∆ LEAF VALVE AF817 VALVE PLATE AP101A VALVE RETAINER AF819A VALVE SCREW BB330A 10 ∆...
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Page 8: Troubleshooting Chart
Motor not wired correctly. Check wiring diagram/line voltage. • • • Blown head gasket. Replace. World Headquarters Gast Hong Kong P.O. Box 97 Unit 12, 21/F, Block B 2550 Meadowbrook Rd. New Trade Plaza Benton Harbor, MI 6, On Ping Street, 49023-0097...