Test Procedures
Inline System Test
Virtually all system components can be unidirectionally tested or set in this configuration
Flo-Check
Figure 8: Inline system test
Begin by installing the Hydraulic System Analyzer between the pump and the control valves
Pump Test
1 If the directional control valve's (DCV's) center does not allow an unrestricted flow path back to tank, see
2 Open the Hydraulic System Analyzer loading valve fully to read maximum pump flow at zero pressure
3 Select
Run
and/or
Record
on the PC (see
"Recording Measurements to a File" on page 10
), then close the loading valve to
increase pressure from zero pressure to rated or maximum pump pressure to determine pump condition
4 The pump flow at rated pressure can now be checked against the pump manufacturer’s specifications A decrease in flow
from zero pressure to maximum pressure indicates the pump condition A pump that delivers a constant low flow at zero
pressure and at maximum pressure suggests suction problems
Relief Valve in Separate Housings
1 If the DCV's center does not allow an unrestricted flow path back to tank, see
2 Select
Run
and/or
Record
on the PC (see
"Recording Measurements to a File" on page 10
)
3 Close the Hydraulic System Analyzer loading valve while viewing or recording the pressure and flow Pressure increases
until the relief valve opens You can reference this point on the Hydraulic System Analyzer software Repeat to check the
relief valve adjustment
Often relief valves start to open before they reach their full pressure flow settings This can be noted by comparing the
pressure and flow rate readings made in a pump test Any great decrease in flow rate from tests made in a pump test indicates
a faulty relief valve
Page 20
June 2022
TST-UM-02433-EN-02