22
EB 2043 EN
Mounting and start-up
5.5 Combination with
differential pressure and
flow regulators
If the safety temperature monitor is used in
combination with Series 42 Differential Pres
-
sure and Flow Regulators, a separating
piece must be mounted on the operating ele-
ment of the safety temperature monitor to
connect the actuator (Types 2424, 2427,
2428 and 2429 with force limiter).
Before installation, remove the snap ring on
the pin of the separating piece.
Table 4:
Separating pieces
Version with separating
piece
Order no.
Brass (for water)
1190-9948
Stainless steel (for water)
1590-7703
Stainless steel (for oil)
1590-7704
5.6 Start-up
Risk of personal injury due to process me-
dium escaping under pressure.
First start up the regulator after mounting all
parts.
Note
DANGER
!
Risk of burn injuries due to hot or cold com
-
ponents and pipelines.
Depending on the process medium, valve
components and pipelines may get very hot
or cold and cause burn injuries.
−
Allow components and pipelines to cool
down or heat up.
−
Wear protective clothing and safety gloves.
Malfunction and damage due to adverse ef
-
fects of weather conditions (temperature, hu
-
midity).
Do not install the safety temperature monitor
outdoors or in rooms prone to frost. If such a
location cannot be avoided, protect the reg
-
ulator against freezing up if the process me-
dium flowing through the valve can freeze
up. Either heat the regulator or remove it
from the plant and completely drain the re-
sidual medium.
Risk of the valve being destroyed by steam
hammering.
−
Drain off any condensate in the pipeline.
−
Vent the plant.
Î
Fill the plant very slowly with the process
medium on start-up.
Once the safety temperature monitor is
mounted onto the valve, it can be put into
operation.
WARNING
!
NOTICE
!
NOTICE
!