SGB VLR 230, Документация, Страница: 11 / 45

VACUUM LEAK DETECTOR VLR ..
2020-06-29 8
(4) Dry relay contacts which open in the case of alarm.
(5) Other versions can be agreed with the manufactures, since adaptation could be necessary.
4.4.2 Probe in place of the liquid stop valve
(1) A probe can be integrated in the suction line as a component part of the installation kit in place
of a liquid stop valve (agree version of installation kit (MBS) with the manufacturer). The probe
can also be mounted as an additional fixture at the low point of the interstitial space.
(2) With this version the leak detector indicates that liquid (product or groundwater) is in the
suction line (and thus usually in the interstitial space).
(3) This version can become necessary if
– the alarm signal is not possible due to the pneumatic principle
– the liquid to be monitored is extremely dangerous (e.g. potentially fatal).
– if escaping liquid (e.g. due to "just" sufficient resistance of the interstitial space) has to be
established immediately.
4.4.3 Probe in addition to the leak detector for monitoring increase in liquid level
(1) Set up or mount the probe in the space to be monitored (dome or control shaft, leak tub,
leakage containment) according to the manufacturer's instructions.
(2) Install the electrical supply line to the leak detector and connect it according to the instruc-
tions in chapter 4.7.
4.5. Mounting the solenoid valve(s) (VLR) ../E ONLY)
(1) The solenoid valves must be mounted as near to the interstitial space as possible. Pres-
sure resistance, resistance to substances (incl. sealing materials), temperature range and
protective rating (in the case of mounting in the open air) must be guaranteed.
(2) For VLR ../E: ONLY one solenoid valve in the connection line to the interstitial space:
– Voltage supply:
depending on the voltage variant 230 V, 120 V, 24 VDC
– Current consumption:
5 to 10 W
4.5.1 Activation or deactivation of the solenoid valve monitoring
(1) If solenoid valves (or one solenoid valve) are used, solenoid valve
monitoring must be ACTIVATED : The coding plug must be inserted
according to the photo. The photo shows an active solenoid valve
monitoring case.
NOTE: If solenoid valve monitoring is not activated,
the valve will not open; the start-up button will not work!
4.6. Selection of the electrical supply line (VLR ../E ONLY)
4.6.1 Probe
(1) Cable length should not be longer than 30 metres
9
(2) Recommended cable type: NYM 5 x 1.5 mm
2
, LiYY 5 x 0.75 mm
2
with wire-end sleeves
9 The length is limited for EMC-related reasons, longer lengths only after consultation and agreement with
the manufacturer.