Starting Up The Plant - Samson 42-20 Mounting And Operating Instructions

Start-up
Before starting up the plant, make sure the
following conditions are met:
– The control lines are open (needle valve)
and correctly connected.

6.2 Starting up the plant

WARNING
!
Risk of personal injury due to process me-
dium escaping.
Depending on the conditions in the plant in
operation, it may be necessary to install
compensation chambers to protect the regu-
lator.
Î Proceed as described in 'Regulation of
liquids' and 'Regulation of steam' for liq-
uids or steam above 150 °C before start-
ing up the plant.
1. The plant (e.g. consumer valve) must be
open while the plant is being filled.
2. The control lines are open (needle valve)
and correctly connected.
3. For media that do not reach their boil-
ing point:
Open the shut-off valves slowly over a
time period of several minutes starting
from the upstream pressure side. Fill the
plant with the medium.
For media that reach their boiling point:
Open the shut-off valves slowly starting
from the downstream side to avoid steam
hammering.
4. Make sure that the pressure rises simulta-
neously upstream and downstream of the
6-2
regulator to avoid damaging the balanc-
ing bellows or diaphragm.
Regulation of liquids
Î For liquid medium temperatures above
150 °C, first fill the compensation cham-
ber with the process medium. Proceed as
follows:
1. Unscrew filler plug from the compensa-
tion chamber.
2. Use the included plastic funnel or a jug
to pour in the process medium until it
reaches the filling opening.
3. Screw the filler plug back in and tighten
it.
Regulation of steam
Î Warm up the plant very slowly. During
this procedure, drain off any condensate
and vent the plant.
Î First fill the compensation chamber with
water. Proceed as follows:
1. Unscrew filler plug from the compensa-
tion chamber.
2. Use the included plastic funnel or a jug
to pour in water until it reaches the filling
opening.
3. Screw the filler plug back in and tighten
it.
– All pipes conveying the process medium
must be completely drained and dry.
– Air and condensate must be allowed to
escape from the plant.
– Allow time for the pipes and valves to
heat up.
EB 3007 EN