24/10/2018
PRESSURE LEAK DETECTOR
DLR-G ..
- 17 -
4.4
Overpressure Valve
If the interstitial space has sufficient pressure resistance (see section
3.3), an overpressure valve will not be supplied.
The overpressure valve 1 (interstitial space) must be used if a pres-
sure increase exceeding the test pressure (e.g. through warming) can
occur and/or the set pressure on the pressure reducer is higher than
the test pressure of the interstitial space.
The overpressure valve 2 (supply) must be used if the set pressure of
the overpressure valve integrated in the pressure reducer is higher
than the test pressure of the interstitial space.
4.5
Displays and Controls
4.5.1 Display
Signal
lamps
O
pe
ra
ti
ng
C
on
di
ti
on
R
efil
ling
act
i-
vated
o
r
re-
qu
ir
ed
Fi
lli
ng
activa
ted
A
larm
con
d
i-
ti
on
A
larm
,
au
di
bl
e
al
arm
ackn
ow
led
ge
d
D
evi
ce m
a
l-
fun
ct
ion
OPERA-
TION:
green
ON
ON
ON
ON
ON
ON
ALARM:
red
OFF
OFF
ON
8
ON
BLINK-
ING
ON
REFILL-
ING:
yellow
OFF
ON
BLINK-
ING
ON
ON
OFF
4.5.2 Function "Turn off audible alarm signal"
Shortly press "mute" button once, audible signal turns off, the red
LED blinks.
Pressing the button again will turn the audible signal on.
This function is not available during normal operating conditions and
malfunctions.
8
The "Alarm" signal lamp can have various displays depending on the pressure in the interstitial space and whether or
not the "Audible alarm signal" button has been pressed.
Design and Function
