ASA Hydraulik CC Series Offline Circulation Oil Cooler - Built In Pump and Motor, 30 to 60 L/min

A CC Series unit is not a cooler you plumb into the machine's circuit. It is a complete offline cooling loop with its own circulation pump and its own electric motor, so it draws oil out of the tank, pushes it through the core and returns it, entirely independently of whatever the machine is doing. That buys you two real things: constant cooling performance regardless of duty cycle, and a much longer core life, because the core never sees the pressure spikes, flow surges or vibration of the main circuit. Pick your model below and it is on its way.

Ways to buy:

• Off the shelf: four TT rail gerotor units and ten screw pump units, all with the pump and motor already fitted and wired to the terminal box.
• The TT rail gerotor models need an offline rail connector, part ILLZATT53G25K, 1" BSPP. It is on the TT rail connector listing and is not included with the cooler.
• Add a rail filter kit if you want the offline loop to do filtration as well as cooling. Running a return filter on an offline loop is the cheapest way to clean up a dirty tank.
• Add a fan temperature controller if you want the fan to cycle on oil temperature rather than run whenever the unit is powered.
• Want a different pump size, a different motor voltage or a unit built onto a bigger core? Call us and we will factory-code it.

Pick your model

What is in the box

• The complete offline unit: cooler core, fan, circulation pump and electric motor, assembled and ready to mount.
• The motor IS included on the CC Series. Unlike the NM air blast coolers, you do not supply a motor for these.
• No connectors on the TT rail gerotor models. Order the ILLZATT53G25K 1" BSPP offline rail connector separately.
• No suction strainer, no filter and no hoses. Suction and return lines to the tank are your side of the job.
• No starter, no isolator and no temperature controller. A three phase motor needs a starter with a thermal overload set to the motor nameplate.

Specifications

How to choose

• Match the flow to the tank, not to the machine. As a working rule you want to turn the tank contents over several times an hour, so 30 L/min suits a small tank and 60 L/min a larger one.
• Small compact installs and lower duty: the TT rail gerotor models, ASATT07RA47CC through ASATT25RA47CC. They are lighter, cheaper and take the 1" BSPP offline rail connector.
• Serious continuous duty, dirty environments or 24 hour plant: the screw pump models. Pick the 4-pole 1.5kW versions for 60 L/min, or the 6-pole 0.75kW versions for 40 L/min at half the motor load and less noise.
• Bigger core equals more heat removed for the same flow, so step up through ASA0177, 0257, 0367, 0467 and 0567 as your heat load rises. The pump and motor stay the same, the core gets bigger.
• Check the weight before you pick a mounting position. The largest screw pump units are over 100kg and are not a bolt-to-the-guard job.

Technicians Advice

The whole point of an offline loop is that the core never sees the machine's circuit, so do not undo that by plumbing it in series with the return line. It takes suction from the tank and returns to the tank, and those two connections should be as far apart as the tank allows, with the suction low and away from the return so you are actually circulating the oil rather than short cycling the same litre.

Take suction from above the tank floor so you are not feeding the pump sludge, and bring the return back below the oil surface or through a diffuser so you are not whipping air into the tank. Keep the suction line short, one size up from the port if you can, and free of sharp elbows: these are positive displacement pumps and they will cavitate and get noisy on a starved inlet, especially on a cold morning with thick oil.

Watch the conditions of use, because they are real limits and not marketing: 100 degrees C maximum oil temperature, 50 degrees C maximum air temperature, and the motors are rated for use up to 1,500m altitude, above which they need derating.

The motors are three phase and are included, so wire them through a proper starter with the thermal overload set to the motor nameplate full load amps, 3.35A on the 1.5kW 4-pole and 1.95A on the 0.75kW 6-pole, and allow for six to eight times that as momentary direct on line inrush when sizing the contactor and upstream protection.

Check rotation before you run it for any length of time: a screw or gerotor pump run backwards will not pump and can be damaged in seconds. Ideally interlock the loop so it runs whenever the machine is powered, or better, put it on its own timer or thermostat so it keeps circulating after shutdown, which is when a hot tank does most of its oxidation damage.

Add a filter to the loop if you can: an offline circuit is the ideal place for one because the flow is steady and low pressure, so the filter actually gets to work instead of being blown through in surges. Clean the fins from the discharge side with low pressure air, and check the pump coupling and the motor feet at every service.

Official Datasheets

📄 CC Series TT Rail Gerotor (PDF)📄 CC Series Screw Pump (PDF)

Complete your setup

Rail Filter KitsFan Temperature ControllersTT Rail Connector Kits

Need help choosing? Call 1300 146 737 or email sales@mhfgc.com.au - real technicians, real answers.