Gorman-Rupp Pumps SE2C3 115V 1P 1483930 and up - Manual (Page 36)

OM−06492 SE SERIES
MAINTENANCE & REPAIR PAGE E − 14
tem may be used. If the compressor/venturi cannot
draw the vacuum level shown in Table E-1, draw
the motor cavity vacuum down as far as the system
will allow, then pressurize the seal cavity so the dif-
ferential between the two cavities is the same as
the differential between the readings shown in the
table.
If a compressor/venturi system is used, install full-
closing ball-type shutoff valves with quick-discon-
nect fittings in the pipe plug holes in both the motor
and seal cavities. This will allow the pressure (or
vacuum) to be maintained while using the com-
pressor to perform the second portion of the test.
Figure E-3 shows a simple schematic for setting up
either a vacuum pump or a venturi/compressor
test system.
ООО
ООО
ООО
Tee
Manometer
Vacuum Pump
Submersible
Pump
Full-Closing
Ball-Type
Shutoff Valve
Quick Disconnect
Fitting
Quick Disconnect
Fitting
Air Compressor
Venturi
Vacuum Test
Motor Cavity
Use Compressor
to Pressure Test
Seal Cavity
Figure E-3. Vacuum/Pressure Test System
Table E-1 shows the motor cavity vacuum and seal
cavity pressure readings for the test, and the dura-
tion to maintain each reading. Any change in the readings during the test indicates a leak which
must be identified and corrected before putting the
pump back into service.
Table E-1. Vacuum/Pressure Test Data
Seal Cavity
Pressure
(PSI)
Pump
Model
Motor Cavity
Vacuum
(In. Hg.)
Duration
(Minutes)
Duration
(Minutes)
S2C3 30 1 15 1