GREER Company MicroGuard 510 Retrofit, Calibration

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MG510R Calibration 17 W450256 Rev A 06/07
Menu 06 - Pressure
This menu is used to determine the pressure of the boom hoist cylinder. A calibrated load is needed
to calculate the diameter of the boom hoist cylinder. It is a good idea for this load to be approximately
80% of the single part load rating. If a smaller weight is all that is available, the boom should be
extended and/or lowered to about 55° to induce higher pressure in the base of the cylinder.
TEST
SET
Press the key adjacent to either “Menu Up” or “Menu Down” until “06 Pressure” appears in the
information window at the right.
Press the key adjacent to “06 Pressure” to enter the routine.
You must first enter the circumference of the cylinder rod (previously recorded). If the dimension of
the cylinder is already known, or easily measured, you may skip this routine by selecting “No” at the
beginning of the routine and, you will be given an opportunity at the end of the routine to manually
enter the cylinder bore size. This dimension is critical and must be measured within 1/10”. Pressure
can not be calibrated until the L, J, G, and H dimensions have been calculated and entered into the
system. An error message will flash on the screen is if this is not done.
With the boom slightly raised, examine the rod and piston side pressures before entering the 1.
routine. This can be monitored using Menu 16 - Data Retrieval. The readings should show
positive numbers of approximately 20-300 psi.
TEST
SET
Raise the boom and monitor the readings. The value of the piston side should increase while 2.
the rod side value should remain constant. If this is not the case, the hoses must be switched.
The value of the piston side should increase when booming up, and the rod side pressure
should increase when booming down. If not, it is possible that the transducer hoses are
routed wrong and will have to be fixed.
Enter the circumference of the cylinder rod in feet and tenths of a foot as previously recorded 3.
in Appendix A.
TEST
SET