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a) Power supply is properly connected to the correct voltage and phase. Use your
meter to verify. Check that proper fuses have been supplied. On three phase
systems, you must confirm that the pump is turning in the proper direction. Jog the
pump, and if no pressure appears in the gauge after a few seconds, then reverse
any two motor leads on the incoming L1, L2 or L3 power lines.
b) All rails are installed and plumb. All fasteners and anchors are installed and
tightened.
c) The Upstand Post is connected plumb and straight to the special rail bracket.
d) The Hydraulic jack unit is installed and it is plumb and straight. Cylinder wall
mounting bracket is installed and secure.
e) The guide yoke is lowered onto the jack unit, and all attachment plates and bolts are
fastened correctly and securely.
f) The galvanized aircraft cable is correctly routed over the guide yoke sheaves with no
kinks or twists. Sheave cable retainer guards have been positioned to within 1/8" of
each side of the guide yoke sheave. (The retainer guards prevent the cables from
leaving the sheave in the event of a slack cable condition.)
g) The hoisting cables are installed in the terminating rope wedges and equally
tensioned by means of the adjusting nuts on the threaded rods. (Minimum two nuts
are required on the bottom section of the threaded rods).
h) Sufficient oil is in the reservoir. The tank must be topped up full.
i) A ladder or scaffold is in the shaft, and access is available to the air bleeder valve at
the top end of the cylinder.
j) The gate valve is open.
k) Before connecting the oil line, clean it out by placing the jack end into a bucket and
running the pump enough to flush out a cup or two of oil.
BLEEDING AIR FROM THE CYLINDER
1) Open the air bleeder screw a half of a turn. Using the temporary buttons, press the UP
button momentarily and release. The motor will start and then stop. Start and stop the
motor quickly. Oil should start to flow through the main valve to the jack cylinder.
2) As the oil flows into the cylinder, air will be heard to “hiss” out of the air bleeder valve. An
assistant should be near the air bleeder to verify this.
3) Do not run the motor continuously to try and speed up the bleeding process or the jack
may jump up unexpectedly. This is due to the oil entering faster than the air can escape.
4) When the air is exhausted from the cylinder, oil will begin to flow out of the bleeder valve.
At this point, close the air bleeder valve. Check for oil leaks.
NOTE
A Flow Control Valve must be specially ordered, if required.
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