RITE-HITE RHH-5000, Руководство пользователя

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HYDRAULIC VALVE ADJUSTMENTS
(SPX POWER UNIT)
SHUTTLE VALVE ADJUSTMENT
(Controls Leveler Descent)
NOTE:
Check oil level before making any adjustments.
1. Leveler must be adjusted to lower, from full raised
position with lip extended to the header stops in less than 13 to
18 seconds.
2. Remove protective cap and O-ring. Loosen locknut without
turning valve body or adjustment screw. Turn adjustment screw
to vary platform lowering speed. Adjustments should be no more
than 1/8 turn increments.
3. Turn adjustment screw counterclockwise to decrease the
lowering speed of platform (excessive loosening can eliminate
platform lowering).
4. Turn adjustment screw clockwise to increase the lowering speed
of platform (velocity fuse may lock-up as a result of increased
platform speeds while lowering).
5. Tighten locknut without turning valve body or adjustment screw.
6. Reinstall o-ring and protective cap and tighten cap.
7. Re-test the unit several times to verify the setting.
SEQUENCE VALVE ADJUSTMENT
(Controls Lip Extension)
NOTE:
Check oil level before making any adjustments.
1. Leveler must be adjusted to extend the lip in 3 to 4 seconds.
2. Remove protective cap and O-ring. Loosen locknut without
turning valve body or adjustment screw. Turn adjustment screw
to vary lip extension speed. Adjustments should be no more than
1/8 turn increments.
3. Turn adjustment screw clockwise to decrease the speed the lip
will extend. (If the lip begins to extend at any time before the
platform has fully raised, the Sequence Valve setting is too low.)
4. Turn adjustment screw counterclockwise to increase the speed
the lip will extend. (When the leveler is fully raised and the lip
does not extend, the Sequence Valve is set too high.)
5. Tighten locknut without turning valve body or adjustment screw.
6. Reinstall o-ring and protective cap and tighten cap.
7. Re-test the unit several times to verify the setting.
Shuttle Valve
Sequence
Valve
Lip Cylinder Port
Cylinder Return Port
(On Tank)
Relief Valve
Check Valve (P.O.)
Infinite Lip Control
(IFC) Valve
Ramp Cylinder Port
Check Valve
(P.T.C.)
19/32" - Preset
6 Threads
1/2" - Preset
6 Threads
FIGURE 13 - SPX POWER UNIT END HEAD
LEVELER ADJUSTMENTS
NOTE: 4 Lb-ft max torque on
valve steam nut, over
tightening may cause
valve/coil failure!
Rite‑Hite
®
Owner’s Manual
RHH‑5000 High Capacity Dock Leveler
Publication: AMEN00206 2020-02-04 13