Bentone BG 450-2, Installation And Maintenance Instruction

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Bentone
172 615 10 2018-01-15
10.5 Leakage control Dungs VPS 504
Technical data
Test volume ≤ 4,0 l
Pressurre increase using motor pumps ≈ 20 mbar
Backup (customer supply) 10A fast or 6.3A slow
Fuse integrated in housing, replaceable T6, 3L 250V (IEC 127-2/111) (DIN41662)
Switching capacity Operating outputs SO1, SO2, SO4: 4A
Faul output T7: 1A
Faul output SO4 1, 2, 3, T7: 1A
Release time ≈ 10 - 30 s
Dependent on test volume and input pressure.
Sensitivity limit 50 l/h
Max. number of test cycles 20 /h
Program sequence
Idle state: Valves 1 and 2 are closed. Pressure buildup: The internal motor
pump increases the gas pressure p
e
in the section by approx. 20 mbar
compared with the input pressure at valve V1. During the test time, the
integrated diffferential pressure sensor monitors the test section for leaks.
When the test pressure is attained, the motor pump switches off (end of test
period). The release time (10-30 s) is dependent on the test volume (max.
4.0 l).
If the test section has no leaks, the contact is released to the control box
after approx. 30 s and the yellow LED lights up.
If the test section is leaky or if the pressure increase by + 20 mbar is not
attained during the test period (max. 26 s), the VPS 504 generates a fault.
The red LED is lit as long as the contact is released by the regulator (heat
requirement).
After a short voltage drop during testing or during burner operation, an
automatic restart is performed.