10 ► GD50
User Manual
PREPARATION PROCEDURES
PREPARATION FOR INITIAL USE
Each unit as shipped has no special unpacking or
assembly requirements prior to usage. Inspection to
assure the unit was not damaged in shipping and does
not contain packing debris is all that is required.
CHECK HYDRAULIC POWER SOURCE
1.
Using a calibrated flow meter and pressure gauge,
check that the hydraulic power source develops a
flow of 7–9 gpm/26–34 lpm for HTMA Type II tools/
EHTMA category D at 2000 psi/105–140 bar.
2.
Make certain the hydraulic power source is equipped
with a relief valve set to open at 2100–2250 psi/145–
155 bar minimum.
3. Check that the hydraulic circuit matches the tool for
open-center (OC) operation.
CHECK TOOL
1.
Make sure the tool contains the correct anvil for
the rod size to be driven. Use the 5/8 inch anvil
(standard in the model GD50132RF Rod Driver) for
5/8 inch diameter rod. Use the 1 inch anvil (standard
in the model GD50133RF Rod Driver) for 3/4 inch to
1 inch diameter rod. Failure to use the correct anvil
with the appropriate rod size can result in damage to
the tool or personal injury.
2.
There should be no signs of leaks.
3. The tool should be clean, with all fittings and
fasteners tight.
CHECK TRIGGER MECHANISM
1.
Check that the trigger operates smoothly and is free
to travel between the
ON
and
OFF
positions.
CONNECT HOSES
1.
Wipe all hose couplers with a clean, lint-free cloth
before making connections.
2.
Connect the hoses from the hydraulic power source
to the hose couplers on the tool. Connect the return
hose first and disconnect it last to minimize or avoid
trapped pressure within the rod driver.
3. Observe flow indicators stamped on hose couplers
to be sure that oil will flow in the proper direction.
The female coupler is the inlet coupler.
Note: The pressure increase in uncoupled hoses
left in the sun may result in making them difficult to
connect. When possible, connect the free ends of
operating hoses together.
OPERATING PROCEDURES
1. Observe all safety precautions.
2. Move the hydraulic circuit control valve to the
ON
position.
3. Place the anvil of the rod driver over the rod to be
driven.
4.
Ensure adequate down pressure is applied to the
rod driver before starting the rod driver. To start the
rod driver, press the button on the control valve to
the
ON
position. Adequate down pressure is very
important. When you wish to stop the tool, press the
button on the control valve to the
OFF
position.
INLINE CONTROL VALVE OPERATION
The 38632 Inline Control Valve is designed to provide
the ON/OFF functions for a hydraulic tool connected to
either an OPEN CENTER (OC) hydraulic system or an
CLOSED CENTER (CC) hydraulic system. The valve
is to be used with tools which do not have an ON/OFF
trigger control. The 38632 Control Valve can be used on
hydraulic systems producing up to 10 gpm/38 lpm with
a maximum relief valve setting of 2500 psi/172 bar. The
valve ports are -8 SAE (3/4-16 thread) O-ring ports.
SETTING FOR OPEN CENTER (OC) OR
CLOSED CENTER (CC)
Set the valve to OC or CC before connecting it to the
hydraulic system. To set the valve for open center
operation, use a straight blade screw driver to turn the
selector screw counter clockwise until it stops. To set
the valve for closed center operation, turn the selector
screw clockwise until it stops.
Be sure you know if you have an OPEN CENTER
(OC) OR CLOSED CENTER (CC) hydraulic system,
DO NOT attempt to install or operate the 38632
Valve until you do. Incorrect installation or operation
of the valve can result in seal failures in the tool,
cause excessive heat in the hydraulic system,
and may damage the tool and hydraulic system.
Understand which type of hydraulic system you are
using before installing or operating this valve.
OPERATION
