Speedaire 2EPN7 Mode D'emploi page 8

Speedaire
Operating Instructions & Parts Manual
Speedaire
Two-Stage Air Compressor
E
Maintenance (Continued)
N
General Maintenance
G
Notes
L
Pressure Relief Valve:
I
pressure relief valve is an automatic
S
pop valve. Each valve is properly
H
adjusted for the maximum pressure
permitted by tank specifications and
working pressure of the unit on
which it is installed. If it should pop,
it will be necessary to drain all the
air out of the tank in order to reseat
properly. Do not readjust.
Belts:
Drive belts must be kept
tight enough to prevent slipping.
If belts slip or squeak, see V-belt
maintenance in preceding section.
tight, overload will be put on
motor and motor bearings
Compressor Valves:
If compressor fails to pump air or
seems slow in filling up tank, shut
down engine and remove valves
and clean thoroughly, using
compressed air and a soft wire
brush. After cleaning exceptional
care must be taken that all parts are
replaced in exactly the sale position
and all joints must be tight or the
compressor will not function
properly. When all valves are
replaced and connections tight,
close hand valve at tank outlet for
final test. Valve gaskets should be
replaced each time valves are
removed from pump.
For Service and Warranty, Call: 1-888-303-1344
®
9HP Diesel Engine Driven
Centrifugal Unloader And
Unloader Pressure Release
Valve:
is operated by two governor
weights. It is totally enclosed and
The
lubricated from the crankcase of
the compressor. When compressor
starts, the governor weights
automatically open compressing
the main spring, allowing the
unloader pressure release valve to
close. When the compressor stops,
the main spring returns the
governor weights to normal
position opening the unloader
pressure release valve and
unloading the compressor. This
prevents overloading the motor
when starting. If air continues to
escape through the governor or
unloader pressure release
valve while operating, this is an
If belts are too
indication the unloader pressure
release valve is not closing tightly
and may be held open by foreign
substance
which has lodged on the seat. In
order to correct this, remove the
governor release valve cap, giving
access to unloader pressure release
valve spring and ball. Clean
thoroughly and return parts in the
same order in which they were
removed. Loose drive belts can
also cause unloader to leak by
preventing the compressor from
reaching proper speed.
(See "BELTS" above.)
The centrifugal unloader
8
2EPN7
Check Valve
: The check valve
closes when the compressor stops
operating, preventing air from
flowing out of the tank through the
pressure release valve. After the
compressor stops operating, if air
continues to escape through the release
valve, it is an indication that the check
valve is leaking. This can be corrected
by removing check valve and cleaning
disc and seat. If check valve is worn
badly, replace check valve.
Before
removing check valve be sure
all air pressure in unit is
released and power is
disconnected. Failure to do so
may result in injury or
equipment damage.
The Interstage Pressure Relief
Valve
is provided to protect against
interstage over pressure and is factory
set for maximum pressure of 75 PSIG.
Do Not Reset
If the pressure relief valve pops, it
indicates trouble. Shut down the unit
immediately and determine and correct
the malfunction. Serious damage can
result if not corrected and can lead to
complete destruction of the unit.
Tampering with the interstage pressure
relief valve, or plugging the opening
destroys the protection provided and
voids all warranty.