Algas SDI VAPORAIRE M-Series, Operation & Maintenance Manual

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Maintenance
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Algas-SDI Operations & Maintenance Manual – 54264
NOTE
As with all components containing materials subject to
deterioration, the venturi check valves should routinely be checked
and replaced as necessary. A minimum annual inspection should
be conducted. Test for leaks with the system pressurized.
WARNING
LPG is heavier than air and LPG vapor either mixed with or without
air will “pool” in low areas without ventilation or wind. Check
potential pooling areas with a gas detector if gas is suspected.
LEAK CHECK PROCEDURE FOR VENTURI CHECK VALVES
1. Remove silencer from venturi or Air Inlet Header if equipped.
2. Build up pressure in the surge tank to the system operating pressure, shut off the system, close the inlet
valve, and disconnect all power.
3. Use either a gas detector or a soapy solution applied to the check valve and seat to determine if there is a
leak.
4. If there is a slight leak from the venturi check valve, tapping the valve open quickly with the handle of a
screwdriver or suitable blunt tool may dislodge small particles on the lip of the valve. Do not use objects with
a sharp pointed end to open check valve. Otherwise the venturi must be disassembled to adjust the check
valve pivot arm as outlined in the previous procedure.
5. When assembling the silencer into the venturi housing, use an anti-seize compound on the threads.
CAUTION
If the venturi check valve leaks or the pivot arm mechanism
operates poorly the venturi check valve assembly must be
replaced. Follow the procedure to replace the venturi check valve
and pivot arm.