Warming Hydraulic Fluid; Operation Of Control Pendant - J&M 44-50 Operating And Maintenance Manual

MODEL 44-50
VIBRATORY
DRIVER/EXTRACTOR
III. OPERATING INSTRUCTIONS
D. WARMING HYDRAULIC FLUID
1. The vibrator should not be operated at full speed if the temperature of the hydraulic
fluid is below 70°F(21°C). The HYDRAULIC FLUID COLD light on the control panel
will be on if fluid temperature is below 70°F(21°C). Also check gage on reservoir.
2. If temperature of the hydraulic fluid is below 70°F(21°C), set the diesel engine at 1500
RPM and run the vibrator at reduced speed until the temperature of the hydraulic fluid
exceeds 70°F(21°C). The Hydraulic Fluid Cold light will then go off.
3. When the engine is warmed up and hydraulic fluid temperature is at least 70°F(21°C),
full speed operation may begin. Adjust the throttle so the engine is running at 2100
RPM unloaded. The engine should maintain about 2100 RPM under load.
E. OPERATION OF CONTROL PENDANT
1. The operation of the vibratory driver is controlled by the control pendant. The control
pendant is connected to the control panel with 50 feet of electrical cable to permit
operation from any advantageous position to view the vibrator. (Consult J&M for pendant
extensions)
2. The pendant has three, two-way switches, one with an indicator light and an Emergency
Stop button.
a. To Clamp to Pile:
Position vibratory driver on pile. Turn the clamp switch on the pendant to CLOSE. The
CLAMP light on the pendant will come on when the hydraulic clamp has achieved adequate
pressure to permit vibration to begin. The light should normally come on in a few seconds.
b. To Start Vibration:
Turn the vibrator switch to FORWARD.
NOTE:
Do not operate the vibrator if hydraulic fluid temperature exceeds
180°F(82°C) as this may damage hydraulic components.
The vibrator switch reads FORWARD/REVERSE instead of START/
STOP because the Model 580 power unit also operates J&M earth
augers.
Do not turn the switch to FORWARD until the CLAMP light in the
pendant comes on, indicating adequate clamping pressure.
III-4
OPERATING
INSTRUCTIONS