Installation and instruction manual for Laing DDC pumps

<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>for</strong><br />

<strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong>

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

Application<br />

The <strong>Laing</strong> <strong>DDC</strong> series <strong>pumps</strong> are primarily used <strong>for</strong> the circulation of cooling<br />

liquid in liquid cooled computers.<br />

Construction<br />

- The <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong> are spherical motor <strong>pumps</strong>, which provide very<br />

quiet operation <strong>and</strong> long life.<br />

- The motor is electronically commutated <strong>and</strong> the <strong>pumps</strong> consequently<br />

have a high efficiency.<br />

- The electronic commutation creates a sine wave voltage, practically<br />

eliminating commutation noises.<br />

- The <strong>DDC</strong> pump is supplied with mounting feet <strong>and</strong> either 3/8“ hose barb<br />

(models <strong>DDC</strong>-1, <strong>DDC</strong>-1 P <strong>and</strong> <strong>DDC</strong>1- T)or 1/4’“ male thread connections<br />

(models <strong>DDC</strong>-1 R, <strong>DDC</strong>-1 RP <strong>and</strong> <strong>DDC</strong>1- RT)<br />

- <strong>DDC</strong>-1: Pump with lead wire, no connector.<br />

- <strong>DDC</strong>-1P: Pump with hard disk power connector.<br />

- <strong>DDC</strong>-1T: Pump with hard disk power connector <strong>for</strong> power <strong>and</strong> an<br />

additional fan connector <strong>for</strong> the tacho output. If this connector is plugged<br />

into a fan receptacle on the motherboard, the rpm of the pump can be<br />

monitored in the BIOS.<br />

Expansion tank<br />

<strong>Installation</strong><br />

Fan<br />

- The pump is ideally in<br />

stalled in the cooling loop<br />

Heat exchanger<br />

be<strong>for</strong>e the air cooled heat<br />

Cold Plate<br />

exchanger. In this way, the<br />

waste heat of the pump<br />

itself is added to the<br />

cooling loop downstream<br />

of the CPU<br />

- An expansion tank needs<br />

to be mounted on the<br />

suction side of the pump. The expansion tank must be sized such that<br />

there is always sufficient liquid in the system.<br />

<br />

www.laing.de

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

- The pump must be mounted<br />

below the level of an open<br />

expansion tank.<br />

- Ideally the pump should be<br />

placed at the lowest<br />

point of the system.<br />

- The pump is mounted on a<br />

flat surface. Avoid bending the<br />

pump by over tightening of<br />

the screws.<br />

Drilling dimensions <strong>for</strong> the mounting holes<br />

<strong>Installation</strong> position<br />

The pump can be mounted either to a wall or on the bottom of the computer.<br />

The pump must not be mounted with the motor pointing up <strong>and</strong> it must not<br />

be installed pumping downwards.<br />

www.laing.de

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

Electrical connection<br />

− The <strong>DDC</strong> pump runs on 12 Volt DC. If you install a pump without<br />

connector, make sure to observe the correct polarity.<br />

− <strong>DDC</strong>-1P <strong>and</strong> <strong>DDC</strong>-1T are equipped with a connector <strong>for</strong> the power<br />

supply.<br />

− The fan connector of the <strong>DDC</strong>-1T can be plugged into a fan receptacle<br />

on the motherboard to enable monitoring of the pump rpm.<br />

Start-up<br />

− The cooling loop must be fully operational be<strong>for</strong>e starting the computer<br />

because the CPU otherwise can overheat in a very short time <strong>and</strong> can<br />

suffer damage.<br />

− Be<strong>for</strong>e starting up the pump make sure that the loop is completely filled.<br />

− Start the pump<br />

− If you can hear an audible noise, air is left in the pump. Switching the<br />

pump on <strong>and</strong> off several times can accelerate the purging of this air.<br />

Disconnect the power plug <strong>and</strong> reconnect it after approx. 2 seconds.<br />

− While purging the air observe the liquid level in the expansion tank. If<br />

the liquid in the expansion tank is exhausted, air will be sucked back<br />

into the loop continuously.<br />

− If the system does not run quiet after several minutes of purging stop<br />

the pump <strong>and</strong> re-fill the system.<br />

− Avoid running the pump dry <strong>for</strong> prolonged periods since this will damage<br />

the bearing.<br />

<br />

www.laing.de

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

Maintenance<br />

− The pump does not require any maintenance. There are no user<br />

replaceable parts in the pump.<br />

− It is important <strong>for</strong> trouble free operation of the pump that there is always<br />

enough liquid in the pump, since dry run damages the bearing <strong>and</strong> leads<br />

to reduced flow or interruption of the pumping operation.<br />

− Air in the system will cause audible noise <strong>and</strong> there<strong>for</strong>e can be easily<br />

detected.<br />

− If there are <strong>for</strong>eign particles or deposits in the system, please follow the<br />

<strong>instruction</strong>s listed in the troubleshooting section.<br />

Troubleshooting<br />

− If the pump does not operate,<br />

please check first whether the<br />

power supply is operating<br />

correctly.<br />

− If this does not resolve the<br />

problem please unplug the<br />

pump several times.<br />

− If this still does not result in<br />

the pump starting, it is<br />

probably blocked by particles<br />

or deposits in the system.<br />

− Drain the system <strong>and</strong> remove<br />

the pump.<br />

− Open the pump by removing<br />

the four housing screws at<br />

the bottom.<br />

− Remove the pump housing <strong>and</strong><br />

pull out the rotor.<br />

− Clean the rotor <strong>and</strong> the stator<br />

with a clean cloth <strong>and</strong> purge<br />

all dirt from the pump housing.<br />

Pump<br />

housing<br />

Rotor<br />

Seal ring<br />

Stator<br />

Housing<br />

screws<br />

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

− After reinserting the rotor into the stator per<strong>for</strong>m a brief run test to make<br />

sure that the rotor is spinning up. Caution: To avoid the introduction of<br />

water into the electronics the pump should be completely dry be<strong>for</strong>e this<br />

test is done.<br />

− If the rotor is spinning in the above test, remove the o-ring from its seat<br />

<strong>and</strong> clean it carefully.<br />

− Re-insert the seal ring, place the pump housing on top of the motor <strong>and</strong><br />

screw it in place using the four screws.<br />

− If the pump still won’t work or if the rotor does not run during the run test<br />

the pump needs to be replaced.<br />

Dimensional drawing (in mm)<br />

<br />

www.laing.de

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<strong>Installation</strong> <strong>and</strong> <strong>instruction</strong> <strong>manual</strong> <strong>Laing</strong> <strong>DDC</strong> <strong>pumps</strong><br />

Pump curve<br />

Pump head [m]<br />

Power consumption [W]<br />

Flow rate [l/h]<br />

www.laing.de

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About us<br />

Since the 1950s we at <strong>Laing</strong> have worked in the areas of research,<br />

development <strong>and</strong> production of <strong>pumps</strong> <strong>and</strong> heating products. The original<br />

R&D institute located in Southern Germany has over the years evolved into<br />

an international company with additional locations in the US, Japan <strong>and</strong><br />

Hungary <strong>and</strong> with more than 400 employees.<br />

Today, our program consists of:<br />

• Pumps (Shaftless spherical motor <strong>pumps</strong>) • Heating controls<br />

• Floor heating system connection • Electrical heaters<br />

• Special products<br />

We are a flexible <strong>and</strong> competent partner in the area of pumping <strong>and</strong><br />

heating. We invite you to try our high quality, economic products.<br />

<strong>Laing</strong> GmbH · Systeme für Wärmetechnik<br />

Klingelbrunnenweg 4 · 71686 Remseck · Germany Phone: +49(0) 7146/93-0<br />

Fax: +49(0) 7146/93-33 · E-Mail: info@laing.de · Internet: www.laing.de<br />

261007 Subject to change withot notice