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Ap- • r W-1EMC Monitoring System NOTE: The fuel float must be placed magnet -side up to ® effectively measure fuel. The magnet is located in the narrow cylindrical end of the fuel float. The wider ta- pered end is the bottom of the float. BE SURE TO SLIDE THE MAGNET END OF THE FLOAT ON FIRST! CAUTION: INSTALL THE FLOATS MAGNET -SIDE UP. IF THEY ARE INSTALLED INCORRECTLY, INCOR- RECT FUEL HEIGHT AND WATER HEIGHT READINGS WILL RESULT. CAUTION: WHEN SLIDING THE FLOAT ONTO THE PROBE SHAFT, BE CAREFUL NOT TO BREAK ANY OF THE MAGNET RETENTION FINGERS. THIS COULD RESULT IN IMPROPER MOVEMENT OF THE FLOAT AND INACCURATE READINGS. Figure 27. Probe Assembly for Products Requiring Water Measurement. Figure 28. Probe Assembly for Products not Requiring Water Measurement. 6. Gently slide the water float or the water float mounting tube onto the probe shaft, magnet -end first, ballast -end last. The float or tube should move freely on the probe shaft. (Refer to Figure 27 or 28.) 16 CAUTION: WHEN SLIDING THE FLOAT ONTO THE PROBE SHAFT, BE CAREFUL NOT TO BREAK ANY OF THE MAGNET RETENTION FINGERS. THIS COULD RESULT IN IMPROPER MOVEMENT OF THE FLOAT AND INACCURATE READINGS. 7. Replace the boot, and turn until the boot's bosses snap into the probe detents. (Refer to Figure 27 or 28.) 20 8. Gently slide the floats to the bottom of the probe shaft. CAUTION: FLOATS MUST BE AT BOTTOM OF PROBE SHAFT BEFORE STANDING THE PROBE UPRIGHT. SIGNIFICANT FUEL AND WATER FLOAT DAMAGE WILL OCCUR IF FLOATS ARE ALLOWED TO FALL FREELY DOWN PROBE SHAFT. B. TANK DIAMETER MEASUREMENT. Perform the following procedure to ensure that probes are installed in the proper tanks (see Figure 29, "Tank Diameter Measurement"). Inaccurate readings will result if probes are not the correct length for the given tank diameter. 1. Measure the distance from the bottom of the tank to the top of the probe riser pipe (a). 2. Measure the distance from the bottom of the probe riser pipe to the top of the probe riser pipe (b). 3. Subtract b from a to determine the correct tank diameter (c). PROBE RISER PIPE TANK b a a-b=c Figure 29. Tank Diameter Measurement. 4. Make sure the probe length (Figure 30, "Magnetostrictive Probe Dimensions") is correct for the tank diameter. A&EL T A = LENGTH OF PROBE (Tank I.D.) 14.5" 4' (1.22 m) 5' (1.52 m) 5'4" (1.62 m) 6' (1.83 m) 2.0 m 7' (2.13 m) 7'6" (2.28 m) 8' (2.44 m) 2.5 m n 9' (2.74 m) 3.0 m 10' (3.05 m) 10'6" (3.20 m) 11' (3.35 m) 3.5 m Figure 30. Magnetostrictive Probe Dimensions. C. RISER PIPE CAP PREPARATION. The riser pipe cap must have a 3/8" tapped hole for passage of probe wires (see Figure 31, "Probe Riser Cap Modifica- tion"). Cap kits with pre -drilled holes for a standard 4" riser pipe are available from Gilbarco. Order Kit Number Q 12598- 05, one for each probe.