Pub. No. 1290 - January 2010
29
AUXILIARY PUMP OPERATION
The DUAL-DOK system is equipped with an access port
for an auxiliary pump in the event of a system or power
failure. Access the port through the circular, removable
plug in the front center of the platform with an
adjustable spanner wrench. See Figure 27. Auxiliary
hydraulic power is supplied by an optional power unit
(P/N 06616) using MIL-H-5606 hydraulic fluid only.
Attach the female quick disconnect from the auxiliary
pump supply hose to the supply port male quick discon-
nect.
Connect the auxiliary pump to a 12 VDC power supply.
Disconnect power and lockout/tagout the main power
source. Pull the selector valve activation chain to
prevent hydraulic fluid from returning to the reservoir.
Activate the pump and raise or lower the platform by
using the control lever on the pump. When fully raised,
engage the safety devices as described in the following
Danger.
Contact your local RITE-HITE distributor or RITE-HITE
at 1-800-456-0600 for further information.
NOTE:
Be sure to drain excess fluid from reservoir before
operating the DUAL-DOK system after using the
auxiliary pump. Ensure that oil level is correct using
dipstick on breather cap.
HYDRAULIC LOCK-UP
The DUAL-DOK system is equipped with hydraulic
velocity fuses. These fuses act as check valves to stop
fluid flow if the flow exceeds the valve’s rating. Both lift
and ramp cylinders have an in-line velocity fuse at the
base of the cylinder. Fluid extending the cylinder will not
affect the fuse. The return (retract) flow will act on the
spring tension of the fuse with excessive flow, such as a
loss of system pressure, closing the valve and locking
the system in a Hydraulic Lock-up condition.
If a Hydraulic Lock-up situation occurs, the DUAL-DOK
system must be inspected and reset by a qualified
RITE-HITE representative; failure to do so may void all
warranties!
RITE-HITE
®
Dual-Dok
®
Combined Lift & Leveler System Owner’s Manual
OPERATION INSTRUCTIONS CONTINUED
Platform
Auxiliary
Pump
Male
Quick
Disconnect
Female
Quick
Disconnect
Removable
Plug
Removable
Plug
Platform
Aux. Power Cup
Quick
Disconnect
Pull Ring
Cross Tube
Wire Tie
Selector Valve
Activation Chain
FIGURE 27 - AUXILIARY PUMP
Never be under the DUAL-DOK
®
platform or lip
without:
• Engaging the support latch by pulling the
activation chain and pressing and holding
the Lift DOWN button until the platform
stops decending as shown in Figure 2,
• Pulling the selector valve activation chain
out to prevent scissors movement as
shown in Figure 4,
• If lip needs to be extended, follow procedures
on page 6, Figure 5,
• Turning off power to the control box,
• Locking out and tagging out the main
power source, as shown under Safety
Warnings on page 4.
Содержание DUAL-DOK 2200
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