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SERIES
Vacuum Pump
NP4DP NP7DP
User Manual
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FOR FUTURE REFERENCE
TABLE OF CONTENTS
INTRODUCTION AND TECHNICAL INFORMATION
AC MOTOR DRIVEN VACUUM PUMPS
APPLICATION
SPECIAL FEATURES
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PREPARATION PRIOR TO USING VACUUM PUMP
SAFETY WARNINGS
USE GUIDE
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MAINTENANCE
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REQUIREMENT FOR WARRANTY COVERAGE
TROUBLESHOOTING
EXPLODED VIEW
REPAIR PARTS LIST
DIMENSION
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INTRODUCTION AND TECHNICAL INFORMATION
In order to make it easier to understand the components of the vacuum pump, please see the
picture below.
Handle
Gas ballast
valve
Oil mist filter
Oil tank
Oil lens
Oil drain plug
Inlet
Power switch
Rear cover
Motor
Base
AC MOTOR DRIVEN VACUUM PUMPS
Model
Power Supply
Flow Rate ( CFM )
Ultimate Vacuum
Pump Design
Motor Power ( HP )
Oil Capacity ( oz )
Dimensions ( in )
Weight ( lbs )
Inlet Port
NP4DP
115V/60Hz
4 CFM
15 Micron
Dual-Stage, AC Motor
3/4
17
14"×5"×11.3"
24.3
1/4", 3/8", 1/2" Flare
NP7DP
115V/60Hz, 230V/60Hz
7 CFM
15 Micron
Dual-Stage, AC Motor
3/4
15
14"×5"×11.3"
26
1/4", 3/8", 1/2" Flare
APPLICATION
NAVAC dual-stage rotary vane vacuum pumps are used to remove air, moisture, and other noncondensables from sealed HVACR systems. The products can be used for evacuation of HVACR
repair and new installations, with refrigerants, such as R-12, R-22, R-410A, R-404A, R-134A, etc.
SPECIAL FEATURES
- Integrated pump structure, high precision, for deep ultimate vacuum level.
- Forced oil lubrication ensures vane sealing, cooling and high reliability.
- Large and easy to see oil-level window design help prevent oil supply shortage.
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