Algas SDI VAPORAIRE M-Series, Operation & Maintenance Manual

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Maintenance
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Algas-SDI Operations & Maintenance Manual – 54264
SCHEDULE FOR ALL MODELS OF MIXERS OPERATED ON STANDBY
Use this maintenance schedule if your LPG-vapor/air mixer is used only for
standby operation.
Table 6 - Maintenance Schedule
Description Monthly Every 6 Months Annually
Vapor Motive Pressure Check setpoint
Heating Value Adjustment
Check gas quality
(every two months)
Mixed Gas Operating Pressure
Adjustment
and Dead Band
Check setpoint
Low Vapor Pressure Switch Check setpoint
High Mixed Gas
Pressure Switch
Check setpoint
Solenoid Valves
(Diaphragm and
Piston types)
Operate system to ensure that
valves open and close properly.
Inspect and clean
internal parts. Replace
worn or damaged parts
Venturi Check Valves
Pressure check- remove
cage and silencer if
installed, put tank under
pressure and check valve
for leaks with a soapy
solution. Replace the
valve if there are any
leaks.
*Pressure Regulators Check setpoints
Inspect disk assembly,
seat ring, and diaphragm.
Replace if necessary.
Control Box
Electrical Components
Open box. Check for
corrosion and moisture
damage.
Unit Connections (all) Leak test.
Flame Arrestor
Remove from pressure
switches inside control
box. Clean with general
solvent, blow dry with air,
and replace.
* The pressure regulator has a vent assembly, which is equipped with a relief indicator. The cap for the relief
indicator snaps over the vent assembly opening. If the relief valve opens wide, exhaust gas pops the cap off the
screen vent assembly opening indicating a problem with the regulator. If the cap pops off, inspect the disk
assembly and seat ring, replace them if necessary.
Refer to the Fisher 627 Series manual in the appendix for
detailed maintenance instructions.
CAUTION
Whenever any component or fitting in the system is removed and
replaced or reinstalled, the complete system must be leak tested.
NO LEAKS ARE TOLERABLE!