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Transport; Operation; Maintenance - Hitachi EC119SA - 15 Amp 2.5 HP Lon Twin-Stack Air Compressor Instruction Manual

Instruction manual
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Push the knob of the pressure switch to "OFF" and disconnect
it from the power source before move the compressor. Transport
the compressor in the correct manner.


Insert the plug into the receptacle and start the compressor
by pulling the knob of the pressure switch to "ON" (Refer
to Fig. 2).
Do not stop or start the compressor by
use of the plug. Always use "ON/OFF"
knob located on the pressure switch.
The operation of the compressor is automatic and is
controlled by the pressure switch which stops it when the
pressure in the air-tank reaches the maximum level and
restart it when the air pressure drops during use to the
restart level.
The motor of the compressor is fitted with a thermal
protection with manual reset (push-button), which stops
the compressor when the temperature is too high. Should
this be tripped, the compressor will restart only if reset is
CAUTION: Wear appropriate personal hearing
protection during use. Under some
conditions and duration of use, noise from
this product may contribute to hearing loss.
Adjustment of working pressure
Unlock the knob of the pressure reducer pulling it up, adjust
the pressure to the required level by turning the knob
clockwise to increase and counterclockwise to decrease.
A pressure gauge (B) is provided to know when the
required pressure is reached, lock the knob by pushing it
down firmly (Refer to Fig. 6).
When adjusting the pressure, check and make sure that a
pressure gauge for the tank has the pressure level that is
higher than that of the pressure to be adjusted.
It is also imperative that you make adjustment by slowly
starting up the pressure from the level that is lower than the
pressure to be adjusted.
WARNING: Check the manufacturer's maximum
pressure rating for nailers, staplers and
accessories. Compressor outlet pressure
must be regulated so as to never exceed the
maximum pressure rating of the nailers,
staplers and accessories.
Knob of the pressure
Pressure gauge
(B) indicates the
working pressure
Quick coupler
(air outlet)
Pressure gauge (A)
indicates the pressure
in the air tank
(1) Push the knob of the pressure switch to "OFF"
(Refer to Fig. 1 and Fig. 2).
(2) Unplug the plug from power source.
(3) Open the drain cock located at the lower part of the tank
(Fig. 7).
Drain cock
WARNING: Risk of bursting. When the tank gets cor-
roded, there is a risk of breakdown. Water
will condense in the air tank. If not drai-
ned, water will corrode and weaken the air
tank causing a risk of air tank rupture.
Drain tank daily or after 4 hours of use. The
drain contains moisture in the air, abra-
sion particles, rust, etc.. To drain tank
open valve slowly and tilt compressor to
empty accumulated water. Keep face and
eyes away from drain cock.
About the thermal protector
The thermal protector operates to stop the motor when a
problem such as a motor overload, etc.. occurs. If the
motor should stop during operation, proceed as follows.
(1) Push the pressure switch knob to the "OFF" position
and disconnect the plug from the receptacle (Fig. 2).
(2) If the extension cord does not conform to the
specifications given on page 6 replace with an extension
cord such as that shown on page 6. If the capacity of
the power supply is insufficient, increase the power
supply capacity to remove the cause of a flow of
excessive current (over-current).
(3) Wait approximately 5 minutes, then press the reset
switch of the thermal protector (Fig. 8).
(4) Start up. If the motor still stops during operation, please
contact the service center.


WARNING: Disconnect the compressor from the
power source and remove the compressed
air from the air tank before performing the
maintenance operations. Allow the
compressor to cool before performing the
maintenance operations.
- 9 -
Switch of thermal protector

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