Gast DOA-P704 - User Manual

LABORATORY OILLESS DIAPHRAGM
VACUUM PUMP & COMPRESSOR
OPERATION & MAINTENANCE MANUAL
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.
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.
www.gastmfg.com
ISO 9001 & 14001 CERTIFIED
®Registered Trademark/™Trademark of Gast Manufacturing Inc., Copyright ©2002 Gast Manufacturing Inc. All Rights Reserved.
PART NO. 70 - 5105 G471PL (Rev B)
Model DOA-P704 Shown
1
WARNING
PLEASE READ THIS MANUAL COMPLETELY BEFORE INSTALLING AND USING
THIS PRODUCT. SAVE THIS MANUAL FOR FUTURE REFERENCE AND
KEEP IN THE VICINITY OF THE PRODUCT.

Summary

General Safety and Product Use

Product Use Criteria

Defines acceptable usage conditions and limitations for the pump, including air quality and environmental factors.

Installation Procedures

Electrical Safety for Installation

Covers critical electrical shock hazards and safe connection practices during installation.

Mounting and Plumbing

Details proper mounting techniques and plumbing connections for optimal performance.

Motor Control and Accessories

Discusses motor protection, electrical codes, and accessory installation.

Operation Guidelines

Injury Hazards During Operation

Warns about hot surfaces, air stream hazards, and noise during operation.

Startup Procedures

Instructions for starting the pump and troubleshooting initial issues.

Maintenance and Shutdown

Electrical Safety for Maintenance

Safety warning for disconnecting power before performing maintenance.

General Maintenance and Cleaning

Guidance on regular checks, filter maintenance, and cleaning procedures.

Proper Shutdown Procedures

Outlines the correct sequence for shutting down the pump to prevent damage.

Service Kit Installation

Electrical Safety for Service Kit

Safety precautions for installing service kits, including power disconnection.

Disassembly and Reassembly

Step-by-step guide for taking apart and putting back together pump components.

Replacing Diaphragm and Valves

Detailed instructions for replacing diaphragm and leaf valves.

Warranty Information

Product Warranty Terms

Details the warranty period, exclusions, and buyer responsibilities.

Parts and Ordering

DOA Series Parts List

Lists part numbers and descriptions for DOA series models.

Troubleshooting

Common Problems and Solutions

Table of issues, symptoms, and recommended remedies for pump problems.

Gast DOA-P704 Specifications