dunphy TAD4, Operating Manual

Page: 151 / 165

Operating Instructions For TD/TAD4 Dual Fuel Burner
June 13 151 of 165 TD/TAD4 Manual Rev 4
12.6 VPS 504 Valve Proving System
The VPS 504 is the valve proving system used for double
block gas valves. The valve proving system complies
with EN 1643:

Equipment operates independent of residual
pressure in the range of the permissible operating
range

Test volume ≤ 4 l

Setting work not necessary on site

Short test period: min. 10 s, max. 26 s

Tightness or leaks are displayed by an LED

External fault display possible for series 02, series
04 and series 05.

Group fault alarm optional for series 01 (SSM)

Suitable for TRD systems

Electrical connection possible by plug connection
series 01, 02, 03. No rewiring is required for
contact allocation as per DIN 4791.

Series 04 and series 05: electrical connection at screw terminals via PG 13.5 cable entry.
Suitable for gases of gas families 1, 2, 3 and other neutral gaseous media.
Not suitable for use with hydrogen – VDK 200 H2 to be used for hydrogen.
Approvals
EC type test approval as per EC Gas Appliance Directive: VPS 504… CE-0085 AP 0168
EC type test approval as per EC Pressure Equipment Directive: VPS 504… CE0036
1 Hall switch
2 Solenoid
3 Pressure switch diaphragms
4 Compression spring
5 Filter
6 Solenoid valve anchor
7 Solenoid valve coil
8 Pressure pump
9 Unlock switch
10 Fault lamp
11 Operating lamp
12 Test nipple
13 Volume restrictor
14 Pump diaphragm
15 Pump linkage
16 PCB
17 Plug connection
18 Equipment fuse
19 Spare fuse