SIAM SUDOS-mini 2, Руководство по эксплуатации

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massive corrosion or damages of the nipple's thread, carrying out tests is
prohibited.

Clean the inner space of the nipple from paraffin, hydrates, ice and
other.
4.4.2. The level gauge assembly sequence

Clean the thread part of a coupling of the level gauge from sludge
and check it. If there is an undue wear, massive corrosion or damages of
the thread, the assembly of the level gauge is not permitted.

Open the valve in the technological tap for a while (for 1-2 sec.) in
order to blow it through (to clean it from condensate, ice, sludge and other
plugs).

Install the level gauge screwing it on as far as it will go on the nipple
and turn it tight in order to avoid a displacement of the level gauge when it
is under pressure. A tightening torque should be not less than 200±30 psi.
To tighten the thread, use the clips on the thread coupling of the level
gauge and a wrench for adapting pipe from atool set. It is possible to use
any convenient lever instead of the handle.

ATTENTION! When tightening, it is prohibited to use impact
tools and the rotating body of the level gauge as a lever.

Turn the outlet valve of the gauge in such a way that gas escape hole
is not towards you.

Check whether the nut of the level gauge's outlet valve is tightened
well, if not, turn it tight.

Turn the tool's body with the display and keyboard in a position
comfortable for access and observation.

ATTENTION! It is allowed to rotate the rotating body and valve
only if there is no pressure in the working body of the level gauge.

Lift off the front panel cover and set up the tool in a pressure
monitoring mode.

Gradually, not causing a pneumatic or hydraulic impact, open a gate
valve until gas starts entering the level gauge. Stop the gate valve opening
for a while in order to smooth the pressure in the well and in the tool's
working body, and, then, open the gate valve completely. A pressure
smoothing process should be controlled with the tool's display in pressure
monitoring mode.