Guralp Systems CMG-3TB - Manual (Page 13)

Operator's guide
1. Ensure that the “O”-ring seals on the hole lock and sensor
sections are clean and well greased.
2. Stand the horizontal sensor on the ground with the packing cap
at the top, and support it to prevent it from falling over. This can
be done either by using an assistant to hold the casing steady, or
by strapping it to a support such as a bench leg.
3. Remove the packing caps from the top of the horizontal sensor
and the bottom of the hole lock unit. Beneath the caps are
connectors for the horizontal components.
4. Hold the hole lock unit above the horizontal sensor and join the
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