Operation - Greenlee 980 Instruction Manual

Operation

Skin injection hazard:
High pressure oil easily punctures
skin causing serious injury, gangrene
or death. If injured, seek medical
help immediately to remove oil.
• Do not use fingers or hands to
check for leaks.
• Depressurize hydraulic system
before servicing or disconnecting
the hose.
Procedure for depressurizing the hydraulic system:
1. Disconnect the pump from the power source.
2. Rotate the release lever to AUTO RELEASE
and allow the ram to retract fully.
3. Disconnect the hose slowly to release any
trapped pressure.
Greenlee / A Textron Company
980 Hydraulic Power Pump
Note: To prevent leakage, this pump was shipped with
an unvented plug installed in the reservoir fill hole. This
plug must be replaced with the attached vented plug (6)
before use. Failure to replace the unvented plug will
cause poor performance.
Note: Starting the motor without a tool attached to the
pump will cause the pump to immediately build an
internal pressure of 690 bar (10,000 psi).
If this happens, shut off the pump and turn the release
valve to AUTO RELEASE to release the hydraulic
pressure.
1. Move release valve lever to the AUTO RELEASE
position.
2. Check reservoir oil level. The oil level should be
within 25 mm (1 inch) of the top of the reservoir.
If oil level is too low, see Adding Oil in the
Maintenance section for instructions.
3. Place release valve lever in desired position:
a. AUTO RELEASE – ram will stop and then
retract when the hand switch or foot switch
is released.
b. MANUAL RELEASE – ram will stop but will
not retract when the hand switch or foot switch
is released.
4. Press the hand switch or foot switch to advance the
hydraulic ram. When finished, release the hand
switch or foot switch.
Note: If release valve lever is in the MANUAL
RELEASE position, the ram will not retract. To
retract ram, rotate the release valve lever to the
AUTO RELEASE position.
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4455 Boeing Dr. • Rockford, IL 61109-2988 USA • 815-397-7070