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LABORATORY OILLESS DIAPHRAGM
VACUUM PUMP & COMPRESSOR
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.
PLEASE READ THIS MANUAL COMPLETELY BEFORE INSTALLING AND USING
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.
• Laboratory units may be used for both pressure and vacuum.
®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.
O
& M
PERATION
Model DOA-P704 Shown
WARNING
THIS PRODUCT. SAVE THIS MANUAL FOR FUTURE REFERENCE AND
KEEP IN THE VICINITY OF THE PRODUCT.
ISO 9001 & 14001 CERTIFIED
PART NO. 70 - 5105 G471PL (Rev B)
M
AINTENANCE
ANUAL
www.gastmfg.com
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Table of Contents
Related Manuals for Gast DOA-P704
Summary of Contents for Gast DOA-P704
- Page 1 • This pump is oil-less and requires NO lubrication. • Laboratory units may be used for both pressure and vacuum. www.gastmfg.com ISO 9001 & 14001 CERTIFIED ®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright © 2002 Gast Manufacturing Inc. All Rights Reserved.
- Page 2 “DANGER” and “WARNING” will precede all safety will be operated in a wet application. Please consult messages. These words mean: your Gast Distributor/Representative for additional filter recommendations. DANGER Check valves may be required to prevent back streaming through the pump.
- Page 3 An undersized cord is a potential fire hazard, and will cause a drop in line voltage resulting in loss of power causing the product to overheat. The table indicates the correct size cord for length required and the ampere rating listed on the product nameplate. If in doubt, use the next heavier gage cord.
- Page 4 1. Remove the four screws in the top of the product. and filter parts. Remove the top plate. 2. Remove filters and clean with Gast AH255B solvent Disassembly or other non-petroleum based solvent. Use compressed air to dry filters and make sure that all To make reassembly easier, note the location of parts when disassembling.
- Page 5 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 PARTS & ORDERING INFORMATION Please reference the exploded view on the next page for the following model and parts table. DOA SERIES DESCRIPTION DOA-P704-AA DOA-P504-BN PRESSURE GAUGE AA806 AA806 PRESSURE REGULATOR – RELIEF VALVE AF887 AF887 VACUUM GAUGE AE136 AE136 VACUUM REGULATOR –...
- Page 7 EXPLODED PRODUCT VIEWS - MODEL DOA & VALVE PLATE ASSEMBLY Valve Plate Assembly (available separately) Valve Plate Assembly also includes items 10 & 13 (not shown)
- Page 8 Check wiring diagram/line voltage. For the name of the nearest authorized service facility, contact one of our offices below or visit our website at www.gastmfg.com. World Headquarters Gast Hong Kong P.O. Box 97 Unit 12, 21/F, Block B 2550 Meadowbrook Rd.