Kistler-Morse KM L-Cell Bolt-On - Manual (Page 62)

Chapter 6. Microcell Installation on Vertical Pipe Legs
6-5
Mounting Microcell
1. Wipe down a 5” by 2 1 /4” (127 by 57mm) surface, centered on the
template mounting hole, with degreaser. This cleans the bare
metal and adjacent mounting surface for the environmental
cover.
2. Apply a thin coat of KM rust inhibitor to the bare metal surface
for the vertical Microcell. Fig 6-10.
3. Connect the Microcell’s red, black, and white wires to the
corresponding terminals on the K-M Test Meter. Turn on the
power to the Test Meter and set the Simulate/Test switch to the
Test position. Fig 6-11.
Note
If a KM Test Meter is not available, refer to Appendix G,
Alternate Method for Checking Output, before proceeding.
4. With the cable end down, align a vertical Microcell with its mount-
ing holes. Fasten the Microcell loosely to the leg using the two #8-
32 x
5 /8” socket head cap screws and washers. Do not tighten the
screws. If the voltage goes outside the range -100 to +100 mV,
immediately loosen the screw(s). Fig 6-12.
CAUTION
Do not install
Microcells in the
rain.
Do not trap moisture
under the environ-
mental cover.
CAUTION
Do not apply rust inhibitor beyond this
area, or the environmental cover will not
adhere properly.
CAUTION
For proper installation, tighten each screw until the T-
handle driver flexes in torsion
1 /4 turn past the point where
the screw stops turning. Repeat this flexing procedure
several times to ensure the screw is tight. When both
screws are tight, the voltage must be in the range -100 to
+100 mV. Follow the procedure in Steps 5 through 7 to
achieve this goal.
Figure 6-10.Apply
rust inhibitor
Figure 6-11.Test Microcell
Figure 6-12.Install Microcell