MAINTENANCE
Using the Compound Gauge
If the pump or system seems to be operating ineffi-
ciently, the compound gauge can sometimes help de-
termine the problem.
A compound gauge is a combination vacuum and pres-
sure gauge which will indicate (1) receding water level
in the well, (2) leakage in the suction line or in the
pump, or (3) clogged impeller.
To use, install the gauge in the air volume control (AVC)
port in the base of the pump. Open all shutoff valves
between pump and household piping. Tighten regula-
tor screw as far as possible. After running pump a few
minutes to eliminate all air from pipes, loosen regula-
tor screw until compound gauge shows 15” of vacuum.
This setting indicates that the pressure regulator is set
for delivery of the highest volume of water possible.
Let the pump run a few minutes; if the water level in
the well is falling, the vacuum will increase. If neces-
sary, reduce the regulator setting to bring the vacuum
reading back to 15”. If the pump does not develop 15”
of vacuum according the gauge, you may have air leaks
in the suction line or a clogged impeller.
Cleaning the Deep Well Jet
1. Disconnect power.
2. Disconnect piping and well seal or casing adapter.
3. Withdraw jet assembly from the well.
4. Unscrew and remove the venturi. Remove the noz-
zle with a socket wrench and clean.
5. Replace all parts, reprime, and turn on power.
Pump Diassembly
1. Pull disconnect switch. Disconnect power lines
from pressure switch.
2. Remove the two cap screws holding the pump to
the flange adapter. Don’t disturb the piping in the
well.
3. Remove the flange adapter gasket and scrape the
surfaces clean.
4. Leaving the tubing in place, unscrew and remove
the straight barbed fitting at the pressure switch.
5. Draw a line down the side of the pump with a
marker to help alignment during reassembly. Mark
the pump from the motor to the base volute (see
Figure 18).
6. Turn the pump upside down on the bench and
block it. Remove the four cap screws from the base.
With a mallet, tap upward on the base to loosen it.
Lift the base off of the intermediate volute (see
Figure 19).
7. To reduce the chance of dropping the pump onto
your foot, lay it down on the bench; block it so it
won’t roll.
12
Figure 18
Figure 19
