Samson 2488 N - Start-Up

EB 3136 EN 19
Mounting and start-up
5.5 Start-up
Î First start up the regulator after mounting
all parts.
Î Make sure that the restriction (11) is
open while lling the plant. Remove the
electric actuator and turn the set point
screw for the ow control (13) counter-
clockwise () as far as it will go (see
Fig.2).
Î Open the shut-off valves slowly over a
time period of several minutes, prefera-
bly starting from the return ow pipe.
Risk of valve damage due to a sudden pres-
sure increase and resulting high ow veloci-
ties.
Slowly open the shut-off valve in the pipeline
during start-up.
Pressure testing the plant
All plant components must be designed for
the test pressure. If necessary, remove the
regulator from the pipeline or remove the
control line (7) of the diaphragm actuator at
the valve and seal the open connection with
a blanking plug (see Table3).
Risk of damage to the diaphragm actuator
due to impermissible excess pressure.
The test pressure must not exceed the nomi-
nal pressure at the actuator by 1.5 times on
testing the pressure of the plant when the
regulator is already installed.
NOTICE
!
NOTICE
!
Rinsing the plant
1. After lling the plant, rst completely
open the consumer
2. Adjust the maximum ow rate at the reg-
ulator (see section6.1.1).
3. Rinse out the pipeline at full ow rate for
several minutes.
4. Check the strainer (e.g. measure the
pressure drop) and clean it, if necessary.
Table3: Accessories
Accessories Item no.
Blanking plug 8323-0030
Seal 8412-0771