Krom Schroder JSAV 50, Operating Instructions Manual, Page: 5 / 8

GB-5
D
GB
F
NL
I
E
+ –
3 4
2
6 7 5
8 Set the required trip pressure p
do
, see page 4
(Setting the trip pressure pdo).
9 Follow the reverse procedure when reassem-
bling.
0
After inserting the spring, take the spring’s label
from the packaging and stick it below the type
label on the JSAV.
 Clearly mark the adjusted value of the trip pres-
sure p
do
on the sticker.
Resetting
▷
Ensure that the impulse line is depressurized.
CAUTION
Please observe the following to ensure that the
JSAV is not damaged during resetting:
– Turn the reset lever gently and do not go further
than specified.

Press the reset lever and turn through 10° until
resistance can be felt.
~10°
 Hold the reset lever in this position until the lever
can be easily turned further following pressure
equalization.
 Press and turn the reset lever until the valve disc
opens and clicks into place and the “SHUT” mark
is no longer visible.
▷
The red “SHUT” mark must not be visible once
the valve disc has clicked into place.
▷
The JSAV is ready for operation.
Replacing the measuring unit
▷
The measuring unit has to be replaced if the
JSAV no longer opens or can no longer be reset.
▷
We recommend cleaning the O-ring seats and
lightly greasing the O-rings with Klüber Nontrop
ZB91 DIN before installation.
 Depressurize the system.
▷
The measuring unit is supplied with 1 O-ring and
4 screws.
 Ensure that the JSAV is closed. The red “SHUT”
mark must be visible.
▷
If the JSAV is open, apply pressure to the impulse
line to close the valve.
 Detach the impulse and breather lines from the
JSAV.
4 6 5
7 Install the new O-ring in the housing.
8 Follow the reverse procedure when reassem-
bling.
9 Connect the impulse and breather lines to the
JSAV.
0 Check tightness and function, see page 3
(Tightness test) and page 4 (Checking the
function).