Vestil DCR-880-H, Руководство пользователя

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Table of Contents Rev. 6/30/2020 DCR-880, MANUAL
Table of Contents Copyright 2020 Vestil Manufacturing Corp. Page 22 of 25
before refilling. Similarly, if the oil appears milky, water is present and the oil should be changed. If oil is needed, use
HO150 hydraulic fluid. Any anti-wear hydraulic fluid with a viscosity grade of 150 SUS at 100° F (ISO 32 @ 40° C)
such as AW 32 or Dexron transmission fluid is acceptable.
TROUBLESHOOTING: DCR-880-H & -HP
Lower and unload the carriage before beginning service work on the unit. Purge all hydraulic pressure from the foot pump
by holding the release open for two seconds once the drum is lowered to the floor.
If the pump malfunctions in any of the following ways:
• Cylinder rod fails to extend while pumping the foot treadle;
• Cylinder rod rises and lowers with each stroke of the foot pump
treadle; or
• Carriage descends on its own.
Try each of the following fixes until the pump works properly
1. Hydraulic fluid level adjustment:
a. Fully lower the carriage by pressing the release lever and
holding it down.
b. Remove the fill/breather plug and insert a clean, flexible object,
like a cable tie, wire, or twist tie, down inside the cylinder to
determine the oil level. The oil surface should be approximately
2” below the fill hole. If oil is needed, use HO150 hydraulic fluid.
Any anti-wear hydraulic fluid with a viscosity grade of 150 SUS at
100° F (ISO 32 @ 40° C) such as AW 32 or Dexron transmission
fluid is acceptable.
2. Flush contamination from the check assemblies. Press the release
pedal down as far as it will go while pumping the foot treadle rapidly.
This will create turbulence inside the pump, which might dislodge
contamination that might be preventing one of the check balls from
seating properly.
3. Release pedal adjustment
a. Loosen the release pedal
screw retaining nut.
b. Loosen the pedal screw
1
/
2
to a full counterclockwise
turn using either a hex key
wrench (Allen wrench) or a
flat blade screw driver.
c. Grasp an empty drum with
the drum gripping
mechanism and pump the
foot pedal until the drum
rises several inches above
the ground. Press the
release pedal. If the drum
lowers, turn the screw
another
1
/
2
counterclockwise
turn. Raise the drum again.
Continue this process until
the drum maintains
elevation. The drum should
not lower when the release
pedal is pressed.
d. Turn the release pedal screw clockwise
1
/
8
to
1
/
4
turn. Press
the release lever. The drum should lower now. If it does not,
turn the screw clockwise by another
1
/
8
turn and again press
the release pedal. Continue this process until the desired
lowering speed is achieved.
e. Tighten the retaining nut. To prevent the screw from rotating
at the same time, either hold the screw with your fingers or
use the hex wrench or screwdriver into the fitting.
Fill / breather
plug
Treadle
(foot pedal)
Release
Pedal
Screw
(flat head
or hex
head)
Retaining
nut
4. Clean the Inlet Check
Valve Assembly
a. Remove inlet check
port plug with a
crescent wrench and
remove the valve.
b. Clean the valve
components.
c. While the valve is
disassembled, pump
the foot pedal 5 or
more times. Fluid will
discharge from the
port, which should
dislodge debris
clogging the valve.
d. Reassemble the valve
& reconnect the port
plug.
e. Add hydraulic fluid as
necessary according
to the “Hydraulic Fluid
Level Adjustment”
instructions above.
Release
pedal
Inlet check
port plug