Poweramp RCR Series, Owner & User Manual

Page: 32 / 60

30
4111-0044 — June 2021
© 2021 Systems, LLC
A— Flow Control Valve
B— Adjusting Knob
C— Hex Screw
ADJUSTMENTS
Stored
Position
Maintenance
Position
Pin
Maintenance
Prop
Decal Size: 4 x 6.25
File Name: 1751-0555 Rev F
CRUSH HAZARD
DO NOT WORK UNDER OR IN FRONT OF
RAIL RAMP
unless ALL props have been properly
positioned and secured. First, pull pin to position side
maintenance prop(s) as shown below. Failure to do
so will result in death or serious injury. Refer to
owner’s/user’s manual for proper procedure.
1751-0555 Rev F
Adjust Flow Control
Flow Control Adjustment
If the dock leveler lowers too rapidly or too slowly,
the flow control valve ( A ) requires adjustment. When
properly adjusted, the leveler takes 15-20 seconds to
descend from stored to full below dock position.
Depending on equipment, the flow control valve
(Figure 31) may be located on the hoist cylinder, on
the hoist cylinder tee on hydraulic lines, or on the
main valve block.
1. Raise the platform fully, engage the maintenance
props in the service position and secure all hardware.
2. Turn OFF all electrical power to the dock leveler
3. Attach lock out/tag out devices.
4. Loosen the allen head set screw ( C ).
5. Set adjusting knob (
B
) as follows:
• To decrease the lowering speed, adjust knob ( B )
clockwise.
• To increase the lowering speed, adjust knob ( B )
counterclockwise.
6. Once ideal down speed flow control setting is
achieved, lock the adjustment in place by tightening
the hex screw on the adjustment knob.
Note:
Do not overtighten the set screw.
7. Turn ON electrical power to the dock leveler.
8. Store maintenance props, and check leveler
operation.
9. Repeat steps 1– 9 as necessary.
When service under the dock leveler is required,
always lock all electrical disconnects in the OFF
position after raising the platform and engaging the
maintenance prop.
Always post safety warnings and barricade the
work area at dock level and ground level to prevent
unauthorized use of the dock leveler before
maintenance is complete.
A hard hat or other applicable head protection
should always be worn when working under or
around a dock leveler.
Always stand clear of platform lip when working in
front of the dock leveler.
It is recommended and good safety practice to use
an additional means to support the dock platform
and lip anytime when physically working in front of
or under the dock leveler. This additional means
may include, but is not limited to a boom truck, fork
truck, stabilizing bar or equivalent.
Figure 31
C B A