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OPG1™ Operation and Maintenance Manual
Page 21
©2000
DH Instruments, Inc
.
3.2
OPERATIONAL FUNCTIONS
All OPG1 operational functions are accessed from the instrument front panel. Sections 3.2.1 to 3.2.6
detail the various functions.
Figure 6.
Front Panel
3.2.1
SETTING INLET PRESSURE, DRIVE SET REGULATOR ADJUSTMENT
Numerical references in this section refer to Section 3.2, Figure 6.
The
DRIVE SET regulator
(4) is a self venting regulator that sets the pneumatic drive
pressure to the hydropneumatic pump. This determines the oil pressure that the pump will
generate before stalling and that is available
on demand
when the
INLET valve
(5)
is opened.
The
PUMP DRIVE gauge
(3) indicates the pump drive pressure on its inner dial and the
corresponding pump output oil pressure on its outer dial (BLUE numbers). Use the outer
BLUE indication to predict the maximum pressure that will be generated when the inlet valve
is opened.
1.
PDVV Drive Air/Test Oil Pressure Gauge
2.
PDVV Piston Position Indicator
3.
Pump Drive Air/Inlet Oil Pressure Gauge
4.
Pump Drive Air Set Regulator
5.
Test Inlet Valve Knob
6.
PDVV Increase Fast and Slow Buttons
7.
PDVV Decrease Fast and Slow Buttons
8.
Test Outlet Valve Knob
6
5
4
3
2
1
8
7