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Noisy
pump
Check for
air leaks
Check for
high vacuum condition, (10 in. or less for single stage and 15 in. or less
for two stage pumps)
Pump
will not prime
Measure suction
inlet vacuum, should not exceed 15 in. of vacuum
Vent air from unit by opening
vent plug or loosening gauge port plug
Check that
all plugs and suction line connections are airtight
Be certain
by-pass plug is in position on two pipe installation
Use adequate
size suction line
Be certain
suction line filter or strainer has adequate capacity
Rumble
coming from burner at start-up
Check cutoff
at pump or external solenoid
Oil
leaking from pump cover gasket(s) or blown cover gasket(s)
Check for
correct pump rotation
Pump
looses prime after an extended shutdown
Check all
pipe connections for air leaks
Return line
not submersed in oil
In supply
pump applications the return loop my need a vacuum breaker installed to
prevent siphoning
Vacuum
coming from return port on oil pump(two pipe installation)
By-pass plug
not installed
If by-pass
plug is installed check for blocked suction line
Pump
seizes at start-up, blows seal, damage to discharge pressure gauge
Check for
blocked return line or drain port from pump
By-pass plug
should be removed on single pipe installation
Supply
unit does not run
Check motor
electrical connections
Check for
obstruction in return line such as a reversed check valve
Check circuit
breaker and correct possible overload
Unit
runs, but no oil reaches supply pump
Measure suction
inlet vacuum, should not exceed 15 in. of vacuum
Check that
all plugs and suction line connections are airtight
Be certain
by-pass plug is in position
Use adequate
size suction line
Vent air from unit by opening
vent plug or loosening gauge port plug
Be certain
suction line filter or strainer has adequate capacity
Unit
supplies oil to distribution system, but no delivery of oil at OSV valves
Confirm specified
unit can provide needed vertical discharge pressure
Check that
all supply line connections are air and oil tight
Use adequate
size supply line
Minimize supply
line restrictions
Prime pump
and purge supply lines of air
Check pump
pressure settings
Oil
delivery at OSV valves, but burners do not fire
Confirm specified
unit can provide needed capacity
(Size to firing
rate for single pipe burners or size to gear set capacity for two piped
burners)
In pressurized
system, adjust pressure to develop a reading of 10-15 PSI at the most remote
or highest burner
In open loop
system, install standpipe, back pressure valve, vacuum breaker or over-sized
drop pipe
Check to assure
that pressures at OSV inlet does not exceed maximum of 60
PSI
Check for
leaking or damaged OSV
Check for
line failure between OSV and burner pump
Check burner
for fuel pump failure or ignition problems
Burner
pump seal damaged
Install OSV
to assure pressure at burner pump does not exceed 3 PSI
Install pressure
relief valve if entrapment condition is suspected
Pressure
increases in supply line after shutdown
Check to assure
that pressures at OSV inlet does not exceed maximum of 60
PSI
Install pressure
relief valve if entrapment condition is suspected
Oil
Safety Valve does not open
Too much pressure
at inlet of valve
Flow exceeds
recommended flow rate for valve.
Entrapment
condition (expansion of oil in supply line)
Check for
air leaks between the OSV valve and burner pump