Gorman-Rupp Pumps SE1 1/2A3A 115V 1P 1483930 and up - Manual (Page 35)

OM−06489 SE SERIES
MAINTENANCE & REPAIR PAGE E − 14
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)
S1 1/2A3A 30 1 15 1
LUBRICATION
Seal Cavity
Check the oil level in the seal cavity before initial
startup, after the first two weeks of operation, and
every month thereafter.
Check the oil level only when the pump
is cool. If the oil level plug is removed
when the pump is hot, pressure in the
seal cavity can cause hot oil to be
ejected as the plug is removed.
To check the seal cavity oil, lay the pump on its side
and remove the seal cavity drain/fill plug (75) in the
motor housing. Tip the pump and drain off a small
amount of oil into a transparent cup. If the oil level is
abnormally low, or the color milky or dark, refer to
Draining Oil From Seal Cavity in this section for
instructions and troubleshooting tips.