Vestil HDD-36-15-P handleiding
Handleiding
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Table of Contents 5/14/2020 HDD, MANUAL
Table of Contents Copyright 2019 Vestil Manufacturing Co. 13 of 25
• Lowering valve opens which bypasses the check valve and allows oil in the cylinder to flow to the reservoir
(through return hoses). Oil flow to the reservoir is regulated by the pressure compensated flow control valve. By
regulating the volume of oil that can flow through the spool, the speed at which the chute lowers is kept constant.
• Releasing the DOWN button during operation causes all chute movement to stop. The chute will remain in the
same position until you press either button on the pendant controller.
Cleaning lowering solenoid valve: If the chute slowly loses elevation without pressing the DOWN button, lower the
chute completely. Then, remove, inspect, and clean the lowering cartridge valve in the following manner:
1. Lower the chute completely. Turn off electrical power to the unit. If your dumper is AC powered, unplug the
electrical cord from the wall socket. If your unit is battery powered, turn the power switch to the OFF position.
2. Unload the dumper.
3. Remove the nut that fastens the solenoid coil to the valve stem; then remove the coil and unscrew the valve
from the manifold.
4. Inspect the valve for blockage.
5. Inspect O-rings and back-up washers for cuts, tears, etc.
6. Submerge the valve in mineral spirits or kerosene.
7. Use a thin tool, e.g. a small screwdriver, to push the poppet in and out several times from the bottom end of
the valve. The valve should move freely, about 1/16” between the closed and open positions. If the poppet
sticks, the valve stem might be bent. Replace the poppet if it doesn’t free up after cleaning.
8. Remove mineral oil from the valve with compressed air.
9. Move the poppet in and out.
10. Inspect the bottom of the valve cavity in the manifold for foreign matter.
11. With the thin tool, press the middle of the flow control spool, which is located in the bottom of the cavity. It
should move down and up smoothly.
12. Reinstall the valve in the manifold and tighten it to 20 lb∙ft of torque.
Bleeding air from hydraulic system: If the chute lowers extremely slowly or does not lower, air in the cylinders
might be the culprit. Air in the hydraulic system causes the velocity fuse to close, which traps oil in the cylinder. To
overcome this problem, air must be “bled” from the system.
• Completely lower the chute and unload it;
• Locate the bleeder valve located at the top of the cylinder (it looks like a grease zerk). Hold a rag over the valve
and open it about a half turn with a 1/4” or 5/16” wrench. Oil and air will sputter from the valve. Jog the motor by
pressing the white (UP) button for just a second. If air continues to escape from the bleeder valve, jog the motor
several more times. Wait at least 5 seconds between successive jogs.
• Close the valve once air no longer is heard or seen bubbling out of the valve. At this point, just a clear stream of
oil is seen flowing from the bleeder valve. Close the valve.
• Remove the cover from the modular power unit and check the oil level in the reservoir. If the surface of the oil is
lower than 1 to 1½ in. below the fill hole, then add oil until it is between 1 and 1½ inches of the fill hole. Add only
anti-wear hydraulic fluid with a viscosity grade of 150 SUS at 100°F (ISO 32 @ 40°C) like AW-32 or Dexron
transmission fluid.
Item
Part no.
Description
Qty.
1 01-127-010
Manifold, aluminum, w/o
valves
1
2 01-135-052
2HP, 3-phase, 1725 RPM
motor
1
3 01-143-908
Gear pump, 0.153
displacement
1
4 99-021-909
Cylinder, 2
1
/
2
” x 18” ram
style
2
5 99-153-006
Relief valve, 210 bar, size
08
1
6 99-031-029
Inlet screen, 100 mesh 2”
pancake
1
7 99-153-038
Flow control, PC,
7
/
16
” - 20,
2gpm
1
8 01-531-001
Velocity fuse, adjustable,
brass
2
9 99-153-015
Valve, cartridge, NC, no
coil, w/ nut
1
10
99-153-011
Check valve, size 08
1
11 99-023-002
Reservoir, L-shaped, 1.16
gal., 1.0 gal. nominal
1
FIG. 9: Hydraulic circuit diagram
Bekijk gratis de handleiding van Vestil HDD-36-15-P, stel vragen en lees de antwoorden op veelvoorkomende problemen, of gebruik onze assistent om sneller informatie in de handleiding te vinden of uitleg te krijgen over specifieke functies.
Productinformatie
| Merk | Vestil |
| Model | HDD-36-15-P |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 6250 MB |
