Maintenance
MAINTENANCE
Preventive Maintenance
Preventive maintenance consists of periodic inspection and cleaning procedures. Perform the procedures at regular intervals
and correct any defects before resuming operation of the meter.
Periodic Inspection
1. Visually inspect the meter and teh accessory for missing hardware, loose connections, broken register glass, damaged
wiring, or other signs of wear or deterioration. Repair or replace components as required.
2. Verify the proper ow rate and pressure for meter. A loss in pressure, with the resulting ow rate decrease, may indicate
the meter screen is clogged and requires cleaning.
Cleaning
Clean all dust, dirt, grease, moisture, or other foreign material from the exterior of the meter and the accessory.
Calibration Check and Adjustment
Follow these instructions to perform on-site calibration checks and adjustments.
Accuracy Test
1. Place a test tank of known volume at the output of the meter.
2. Fill the test tank to the calibrated level. Make a test run at the same flow rate to be used in the actual operation.
3. Record the quantity indicated on the accessory.
4. Repeat the test three times and average the recorded results.
5. Perform the following calculations to determine the percent of accuracy of the meter-accessory combination.
Qty. Indicated on Accessory
x 100 = Meter Accuracy
Actual Quantity in Test Tank
Example 1.
95 Gallons
x 100 = 95% Accuracy
100 Gallons
In this example, the meter-mounted accessory is slow and the reading is low. A calibration adjustment is required to
speed up the accessory.
Example 2.
104 Gallons
x 100 = 104% Accuracy
100 Gallons
In this example, the meter-mounted accessory is fast and running high. A calibration adjustment is required to slow
down the accessory.
Page 6 September 2014RDM-UM-01089-EN-06
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