Armstrong Double Duty 6 Manuel d'installation et d'entretien - Page 5
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Trouble shooting
Problem
Problem
Inlet isolation valve closed
Condensate not
Pump inlet and outlet switched
discharging
Motive inlet and vent switched
Discharge isolation valve closed
Equalizer line isolation valve closed
Motive pressure not adequate
Motive inlet isolation valve closed
Motive strainer clogged
Air vent damaged
Motive pressure exceeds pump rating
Outlet check valve installed backward
Outlet check valve does not open
Inlet check valve does not open
Inlet check valve is not completley closed
Vent valve leaks
Motive steam valve leaks
Float damaged
Motive steam
Motive steam valve leaks
Mechanism not assembled properly
remains on
Body gasket leaks
Steam leaks out of
Plugs leak
body
Diagnosis
Diagnosis
4
Open valve
Re-pipe
Open valve
Adjust pressure
Open valve
Clean or replace
Replace air vent
Adjust pressure
Install check valve properly
Replace
Confirm lack of pressure in body
Disassemble and clean check valve
Disassemble, clean and inspect - replace defective parts
Disassemble and replace inlet valve
Disassemble and replace float
Disassemble and clean or replace
Assemble so the motive valve is inserted in motive seat
Replace gasket
Remove, add thread sealer and reinstall
Solution
Solution