Crystal P-018-CPF Hydraulic Screw Pump - Manual (Page 13)

Support  11
P-Series Screw Pump Operation Manual
Support
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TROUBLESHOOTING
Unstable Pressure
X Problem: Pressure cannot be generated correctly, or set pressure does not remain stable.
X Solutions:
•
Check that all adapters and pressure fittings have been tightened sufficiently to eliminate leaks.
•
Confirm test fluid does not contain air (air in the fluid can increase adiabatic effects). You may have to adjust the pressure a few times before the
pressure is stable enough for calibration. Replace test fluid if necessary.
•
Adiabatic and thermodynamic effects may be affecting the pressure reading. High pressure hydraulic systems are sensitive to temperature and move-
ments. This effect will disappear after a period of time.
If the pressure is still not stabilizing, the system may be in need of service. Please contact your local distributor for advice.
Note: Always readjust the pressure after 5 to 10 minutes to allow time for settling of above effects.
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MAINTENANCE
Users should/must carry out the following cleaning procedures when required:
Standard exterior cleaning . . . . . . . Clean using a soft, damp cloth.
Heavily soiled cleaning . . . . . . . . . . . The instrument may also be cleaned using isopropyl alcohol when heavily soiled.