GREAT PLAINS P-120DEF Manual del usuario - Página 5
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Flush Pump
When the pump will not be used for more than 2 weeks,
it must be flushed to prevent internal drying of fluid.
It is strongly recommended, for protection from personal
injury, that a simple flush tank be created. Use a container
with a tight fitting lid with a minimum volume of 5 gallons
(19 litres). Cut two holes in the lid of this container; one
which is approximately 1 inch (2.5 cm) larger than the
largest diameter of the pump inlet fitting and a second
hole slightly larger than the nozzle tip. Fill the container
with distilled water. Secure the lid tightly on the top of
the container.
1. Disconnect from power. Remove the pump from the
tank and drain using the instructions above.
2. Connect the pump to the appropriate power supply
(PA-120DEF to grounded GFCI protected, 115-volt
power) (P-120DEF to a 12-volt DC battery)
3. Place the pump inlet and nozzle through the holes
in the top of the flush tank. (Figure 3)
4. Open the nozzle and turn the pump on. Circulate
distilled water through the pump for 10 to 15 minutes.
Open and close the nozzle several times to flush the
bypass poppet.
5. Lift the pump from the water. Allow the pump to run
briefly until only air passes through the system. Turn
the pump off.
CAUTION
Do not run the pump any longer than necessary
without flow. "Dry running" can cause overheating
and pump damage.
6. Drain the hose and nozzle. Wipe entire system with
a clean damp cloth.
WARNING
To avoid fluid exposure, follow fluid manufacturer's
instructions for the disposal of contaminated water.
Clean Pump
If fluid dries inside pump, remove the residue before
further use.
1. Disconnect from power, remove the pump from the
tank, and flush.
2. Disassemble the pump as outlined in the Repair
Section.
3. Thoroughly clean dried fluid from the interior of the
pump. Take care not to scratch parts.
4. Wash the bypass poppet in distilled water.
5. Assemble the pump.
When handling DEF, always wear protective
clothing such as goggles, gloves, and respirators,
as instructed by the fluid manufacturer.
Figure 3
For your protection, flush system before dis-
assembling.
During repair, carefully inspect all parts for wear or
damage and replace, as necessary. Check O-rings and
seals for breakage, wear, and signs of deterioration,
such as swelling.
Clean or Replace Strainer
1. Disconnect pump from power and flush.
2. Remove the coverplate and O-ring from the housing.
3. Remove the strainer.
4. Clean or replace the strainer. Install again.
5. Install the coverplate and O-ring. Torque screws to
25 to 35 in-lbs.
Clean or Replace Inlet Fitting
1. Disconnect pump from power and flush.
2. Remove the inlet fitting from the pump housing.
NOTE:
Ensure proper seating of the O-ring between
the inlet fitting and the housing.
3. Clean or replace the inlet fitting. Install again. Torque
screws to 45 to 50 in-lbs.
Clean or Replace Bypass Poppet
1. Disconnect pump from power and flush.
2. Remove the bypass poppet plug.
3. Remove the bypass poppet. Gently rock it back and
forth as necessary to remove.
REPAIR – PA-120DEF
WARNING
WARNING
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