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Idex Gast DOA Series

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LABORATORY OIL-LESS 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.
IMPORTANT: PLEASE READ THIS MANUAL AND SAVE FOR FUTURE REFERENCE.
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 A)
Model DOA-P704 Shown
1

Questions and Answers:

Idex Gast DOA Series Specifications

General IconGeneral
BrandIdex
ModelGast DOA Series
CategoryWater Pump
LanguageEnglish

Summary

INSTALLATION

Mounting

Guidance on securing the pump for stable operation, reducing noise and vibration.

Plumbing

Instructions for connecting intake and exhaust ports, noting port limitations.

Accessories

Information on filters, mufflers, and optional liquid traps for enhanced operation.

Motor Control

Ensuring adequate electrical installation and protection for the motor.

Electrical Connections

Details on grounding, wiring, and using appropriate power sources for safety.

OPERATION

Start-Up Procedure

Procedure for initial operation, including checks for motor function and voltage.

MAINTENANCE

Solvent Cleaning Procedures

Steps for cleaning filters and components using specific solvents for maintenance.

SHUTDOWN PROCEDURES

SERVICE KIT INSTALLATION

Disassembly

Systematic steps for taking the unit apart for maintenance or repair.

Replacing Diaphragm

Instructions for replacing the diaphragm, including torque specifications.

Replacing Leaf Valves

Procedure for replacing leaf valves, ensuring correct orientation and tightening.

Reassembly

Steps for putting the pump back together after maintenance, including alignment.

WARRANTY

PARTS & ORDERING INFORMATION

TROUBLESHOOTING CHART

AUTHORIZED SERVICE FACILITIES

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