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172 205 67 07-01
LEAKAGE CONTROL, DUNGS VPS 504 SERIES 2
Technical data
Test volume ≤ 4,0 l
Pressure 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
Depending on test volume and input pressure.
Sensitivity limit 50 l/h
Max. number of test cycles 20/h
Programme sequence
Idle state: Valves 1 and 2 are closed. Pressure build-up: 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 differential 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 depending 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.
VPS 504 "NOT TIGHT"
VPS 504 "TIGHT" TEST=41
Pressure buildup Operation
Programmer Idle state
VPS 504 "TIGHT"
1(2)
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