HF PU35, Owner'S Manual

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7
[4.]
Confirm that the Calibrated Value (in the top right corner) matches the current measured or
Gauge Value .
[5.]
Repeat Steps 1 through 4 five times.
6.2.2 Tensioning Modes
The initial and final tensioning modes of operation are described in the next two subsections.
6.2.2.1 Initial Tensioning
When the mode selector valve is in the initial tensioning position, it exposes the initial tensioning relief
valve to system pressure. This initial hydraulic pressure varies according to the strand’s size and length.
Set the initial tensioning hydraulic pressure to exert enough force on the strand, removing slackness and
thus giving the final tensioning pressure a more accurate starting point. Initial tensioning force is usually
set between 2000 and 4000 lbs.-force, depending on the strand length.
The relationship between the force and pressure is as follows:
Force = psi (initial tensioning relief valve setting) x ram area (10in
2
for PS35K and 16.5in
2
for PS46K)
This relationship holds true for both initial and final tensioning.
6.2.2.2 Final Tensioning
When the mode selector valve is in the final tensioning position, it exposes only the final tensioning
relief to system hydraulic pressure while isolating the initial tensioning relief valve.
6.3 Troubleshooting Guide
In the troubleshooting guide below, each problem will be followed by possible explanations and
solutions relevant to each explanation.
Problem 1: The cylinder will not move, and the power unit gauge reads “0” or “LOW.”
Explanation 1.1: The electric motor is not operating.
Solution 1.1:
Start the motor, reset the starter heaters, and check the wiring to the power source.
Explanation 1.2: The line is cut or leaking.
Solution 1.2: Repair or replace the damaged hose assembly.
Explanation 1.3:
The reservoir is low on oil.
Solution 1.3: Refill with Dexron III ATF type hydraulic oil.
Explanation 1.4: The pump or coupling is damaged.
Solution 1.4: Dismantle the power unit and repair or replace defective parts.
Explanation 1.5: The motor is turning the pump in the wrong direction.
Solution 1.5: Wire the motor to turn in the correct direction.