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PAGE 34 —MQ600TD80 TRASH PUMP — OPERATION AND PARTS MANUAL — REV. #8 (11/13/09)
MQ600TD80 — MAINTENANCE
Pump Vacuum Test
5. Check and make sure that there are no air leaks between
the vacuum tester and the inlet port on the pump. If air
leaks are present re-seat vacuum tester.
6. Run the pump for a few minutes while monitoring the
vacuum gauge. A pump will lose approximately one foot
of suction lift for every 1,000 feet of elevation. Depending
on the elevation, the gauge should read between 20-29
in. Hg. (inches of mecury). This is an indication that the
pump is working correctly.
7. If the vacuum tester gauge indicates a reading
below
-20 in. Hg, it can then be assumed that the
pump is not functioning correctly, and corrective action
needs to be taken.
25 in. Hg (inches of mercury)
translates into 25 feet of lift at
sea
level
.
NOTE
DO NOT
attempt to start the engine unless the pump has
previously been
primed
. with water. Severe pump damage
will occur if pump has not been primed.
CAUTION
CAUTION
CAUTION
CAUTION
CAUTION
To perform the pump vacuum test do the following:
1. Remove the pump fill cap, and fill the pump with water.
2. Start the engine as outlined in the initial start-up section,
and wait for the pump to begin pumping. Confirm engine
is operating at 1,900 RPM's
3. As shown in Figure 20 (next page), place a water hose
inside the discharge opening of the pump, and turn on
the water. This flow of water into the discharge opening
will
prevent
the pump from running dry.
4. Place the
Pump Vacuum Tester
over the pump inlet
opening (Figure 21) with the vacuum gauge facing
upwards. It may be necessary to apply a small amount
of water around the rubber seal of the vacuum tester to
make a good suction fit.
Summary of Contents for MQ600TD80
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