30
2. Plugging or clogging:
DANGER:
Turn off engine and disconnect battery cables before working on
equipment. Serious injury or death can result from moving parts
or high pressure spray.
Sometimes when a stoppage occurs, you will not be able to find anything in the line. When this happens,
it means that the system became airbound instead of plugged. To remedy this, see “Foaming”. Plugging
can occur in any one of four places; the valve and recirculation nozzle, the discharge nozzle, the pump
area and the sump area. The plugging is caused by either foreign objects or dewatered fiber.
A. Obstruction in the discharge nozzle is determined by a change or stoppage of the spray pattern.
a) Disengage clutch.
b) Remove the nozzle.
c) Clear the nozzle with the nozzle cleaning rod attached to the underside of the guard rail.
DANGER:
Severe injury can result from opening clamps when piping is hot.
Before loosening any clamps, determine if the pipe is hot. If so,
let it cool before attempting repair.
B. If the recirculation system is not working:
a) Disengage the clutch and shut down the engine.
b) Remove the two clamps on each side of the recirculation valve.
c) Slide the rubber seals back and remove the valve assembly.
d) Check the valve assembly, the recirculation nozzle in the discharge pipe, and the recirculation
pipe going into the tank. Clear any obstructions.
e) Replace the valve assembly and slide the seals back into place. Lubricate the outside of the
seals.
f) Replace the clamps.
3. Obstruction in the pump, which can be determined by a drop in pressure. If the drop in pressure is
accompanied by a frothy or whitish discharge stream, the blockage is in the suction line or sump area.
To clear the pump:
A. Disengage the clutch and stop the engine.
B. Loosen the suction pipe clamps. If there is material in the tank, shut off the suction line valve
C. Remove the clamp closest to the pump.
NOTE:
If no water comes out, it means the obstruction is in the sump area.
E. Reach into the pump and remove the obstruction. If it is jammed, the pump suction cover may
have to be removed.
F. Reassemble removing pipe “plug” in process.
G. Open suction line valve.
4. Obstruction in the sump area, which is located at the bottom of the tank on the inside where the suc-
tion pipe is attached:
A. The easiest way to clear the sump is to back flush through the discharge plumbing with the water
supply hose.
B. Another method is to remove the drain plug and run a long pole through the opening and into the
sump area. Remove the obstruction and replace the drain cap.
C. Use a pipe or pole through the loading hatch opening to dislodge the obstruction.
Summary of Contents for HydroSeeder T120GN
Page 2: ...NOTES II ...
Page 11: ...5 FIGURE 1 Current Set of Safety Decals ...
Page 44: ...NOTES 38 ...
Page 45: ...39 T120 HydroSeeder Parts Manual Model SB ...
Page 46: ...NOTES 40 ...
