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INSTALLATION & OPERATION
POSITIONING AND MOUNTING:
The ARC-60 is designed to fit in very tight spaces, its narrow profile allows for
behind the cab or frame rail mounting. Unit will ship with a mounting template
to aid in proper installation. (See FIG. 6) The ARC-60 requires at least 2" air gap
on the fan shroud side to allow for adequate air intake.
CONNECTIONS (SEE FIG.2):
Note: SAE ports do not require a thread sealant, they seal with an o-ring. Make
sure your SAE fittings have a properly sized o-ring and
are free of thread sealant.
Suction Port-32 SAE – Your hose will go from this port to the
pump inlet port. Minimum hose size – 2".
Pressure Port -20 SAE – The hose from your pump output will "T" into this port.
One side of the "T" supplies the 2.25gpm to the hydraulic fan. Flow will only
be greater than 2.25gpm through this line if the pressure relief valve setting is
exceeded. The other side of the "T" runs to the motor input or control valve
input depending on your system. Minimum hose size – 1.0".
Case Drain -8 SAE – Some hydraulic pumps, motors, and control valves have a
case drain line that needs to be plumbed directly back to the cooler reservoir.
This is where you will make that connection. If your hydraulic system does not
require a case drain line simply leave the APSCO provided hex plug in this port.
This plug also doubles as the drain plug for the tank.
Return Port -24 SAE – The hose from the outlet of your motor or control valve
should be plumbed into this port. This port takes all of the return flow from your
motor and sends it through the filter and heat exchanger built into the ARC-60.
Minimum hose size – 1.5".
Gauge Port -4 SAE – This is a test port on the bottom of your cooler. This port
is connected to the input port of the manifold, for the purpose of connecting
diagnostic equipment like a gauge or transducer to system pressure.
Warning: High Pressure oil can cause severe
injury. Turn off PTO and bleed pressure
before servicing hydraulic system.
Warning: heavy object. To avoid muscle
strain or back injury, use lifting aids and
proper lifting technique when removing or
replacing.
Warning: Rotating Fan Blade. Can cause
serious injury or cut. Keep hands clear. Turn
off and lockout unit before servicing.
Caution: Surface May be Hot. Ensure PTO is
off and unit has cooled before servicing.
START UP PROCEDURE:
This Unit comes ready to install, no assembly required.
Make up all hydraulic connections.
With the PTO disengaged, remove filter cap from top of cooler. Leave filter in
place and add fluid until the bottom gauge is full and the top gauge is empty
as shown. This will filter the fluid as it is being added. Even new hydraulic fluid
should be filtered. You will need to add hydraulic fluid in slowly because the
filter is in place.
Bleed air from lines and check fluid level again. Ensure that the lines are full of
fluid and the air is bled from your system, some pumps and motors, particularly
piston will be ruined in a matter of seconds if operated without fluid.
Depending on the length and diameter of the system hoses you may need to add
fluid to the reservoir several times.
Install filter cap.
Slowly engage PTO with engine at idle speed.
Check for hydraulic leaks and repair as needed
Check for fan operation. Note that the fan will turn slowly
when system pressure is low.
Recheck reservoir fluid level. Each time you add fluid
disengage PTO, if the reservoir gets completely empty before
you add fluid you will need to bleed air from the lines again.
Pressure relief valve setting – The ARC-60 pressure relief valve is factory set
to 3000psi. This is a good setting if all of your other system components are
rated to at least 3000psi. Failure to set the relief valve 200psi higher than
system pressure or any other system relief valve will result in excess build up
of heat. If you need to adjust the APSCO
pressure relief valve it can be accessed by
removing the access panel at the bottom
of the cooler and the R.V. side plug to
manually adjust. The change in pressure
is roughly a 125 PSI per quarter turn. Any
time the side cover is off the PTO should
be off as well.
Once you verify system functionality with
no leaks and the proper fluid level your
ARC-60 is ready for operation.
SYSTEM MAINTENANCE:
Filter – Unscrew filter cap (use a screw
driver or tool with a square shank) and
replace element every three months.
Fluid – Check fluid level daily (with the
PTO off the fluid level should completely
fill the bottom sight glass with no fluid showing in the top sight glass). Drain and
replace hydraulic oil every 6 to 12 months depending on use.
Recommended Fluid – Use non foaming hydraulic fluid and see Pump and Motor
Manufacturer recommendations.
Clean Radiator – Use a mild cleaner compatible with aluminum. Be careful not
to damage fins if using a power washer to rinse cleaner off of radiator. Visually
inspect daily and clean if necessary.
ROTATE CLOCKWISE TO
INCREASE PRESSURE RELIEF
SETTING (INTERNAL HEX)
9/16" JAM NUT. LOOSEN
T0 ADJUST. TIGHTEN WHEN
PROPER RELIEF PRESSURE
HAS BEEN ACHIEVED
PRESSURE RELIEF
VALVE. FACTORY
SET AT 3000PSI
Page 5
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