ekwb EK-FC6990 Manual

All disclosures, notices and warranty conditions are being written on the back of the box. Released on 30th of March, 2011. Revision 1.0
Installation and mounting manual for EK-FC6990 water block
This product is intended for installation only by expert users. Please consult with a qualified technician for installation. Improper installation may result in damage to your equipment. EK Water Blocks assumes no liability
whatsoever, expressed or implied, for the use of these products, nor their installation. The following instructions are subject to change without notice. Please visit our web site at www.ekwaterblocks.com for updates.
Before installation of this product please read important notice, disclosure and warranty conditions printed on the back of the box or our home page.
The barb hose fittings require only a small amount of force to screw them in; otherwise the high flow fittings might break. These fittings do not need to be tightened with much force because the
liquid seal is made using o-rings. The use of an algaecide and corrosion inhibitors is always recommended for any liquid cooling system.
STEP 1: GENERAL INFORMATION. Sample picture of AMD Radeon HD 6990 graphics card
STEP 2: PREPARING YOUR GRAPHIC CARD.
1. REMOVING STOCK COOLER: Remove encircled screws
on the I/O bracket:
STEP 2 cont.: PREPARING YOUR GRAPHIC CARD
1 cont.. REMOVING STOCK COOLER. Remove all encircled screws. All heat sink assembly
screws and backplate should be removed. There are 19 screws on the back of the graphics
card.
2. CLEANING THE PCB. Carefully detach the original heat sink after removing all
fasteners securing it to the board and bracket. Wipe off the remains (by using
non–abrasive cloth or Q-tip, as shown on sample photo) of the original thermal
compound until the components and circuit board are completely clean. EKWB
does not recommend using any liquids for removing paste.
3. APPLYING THERMAL COMPOUND. Apply thermal compound: lightly
coat both GPUs and bridge chip with for example Arctic Cooling MX-2 ™or
MX-4 ™ thermal grease. EKWB recommends to apply thermal grease in cross
form for best performance (see sample picture).
4. CUTTING THERMAL PADS. Your block comes with thermal pads, some of which are already
pre-cut. Others have to be cut to smaller chunks in order to cover all the VRM components and
PCIE lane splitter chip (PLEASE REMOVE FOIL ON BOTH SIDES OF THERMAL PADS PRIOR TO
INSTALLATION. WARNING: DIMENSION BELLOW ARE SCALED).
STEP 3: INSTALLING WATER BLOCK
1. PLACING THERMAL PADS ON PCB. Place thermal pads on chips so that numbers on chips match size of thermal pads. EKWB made sure users have more than enough pads
to cover all surfaces that need to be covered to make block fully functional). It is advised to use small drops of electrically non-conductive thermal grease on chips to make
thermal pads more adhesive and also to improve heat transfer.
Thickness 0.5mm (for memory ICs)
1
1
1
1
1
1
1
1
1
Thickness 0.5mm
(for VRM and PCIE lane splitter chip)
1
1
1
1
1
1
1
1
1
1

All disclosures, notices and warranty conditions are being written on the back of the box. Released on 30th of March, 2011. Revision 1.0
3. PLACING STANDOFFS ON BLOCK. Brass standoffs are necessary in order to attach this
water block to the printed circuit board of the graphics card. Please use the enclosed key to
screw them to the copper base of the water block. There is no need to overtighten standoffs
as nickel plating may get damaged.
4. PLACING BLOCK TO GRAPHIC CARD. During this process please make sure
you align holes on PCB with holes on block. Also pay attention not to use too
much force by pressing block down to PCB. Chip dies are prone to cracking.
5. ATTACHING BLOCK TO GRAPHIC CARD. By using Philips screwdriver first
screw in eight (8) enclosed M3x4 screws. Please use the encased plastic washers
with these screws. Then attach the original backplate using the nine (9) enclosed
M3x8 DIN7991 screws and the enclosed 2mm allen key.
STEP 4: CHECKING FOR CONTACTS
Temporarily r emove the water block to check for uniform surface contact between the block and the components. Note the pattern of contact on a piece of paper. Then repeat
substeps in previous section to reattach the block. In case you fail to obtain good contact, please check again your thermal pad thickness or contact our support
service.
STEP 5: FITTING POSITIONING
Screw in the fittings and plugs. Please use the enclosed EK-Extender G1/4 extender on copper base for fittings only. These custom spacers are obligatory if you intend to use
copper openings as an inlet- and/or outlet port. Use 6mm Allen key to screw in and tighten the EK-Plug G1/4. If you’re using the fittings with threads longer than 5mm please
use the 3mm G1/4 distancer (not enclosed). Attach the liquid cooling tubes and connect the water-block(s) into the cooling circuit. EKWB recommends using EK-PSC fittings
with the EK-FC6990 series water blocks. To ensure that the tubes are securely attached to the barb/fittings, please use hose clamps or an appropriate substitute. The use of an
algaecide is always recommended for any liquid cooling system.
You can use any opening as an inlet/outlet port.
STEP 6: INSERTING CARD IN YOUR PC CASE
Carefully lift your card with installed block and insert it in your PC case. Please bear in mind that your card suddenly withstands extra weight thus again be very careful not to
bend it or cause any other unneeded moves that might damage your card or block during installation.
REQUIRED TOOLS AND MOUNTING SCREWS:
scissors philips screwdriver 8×screws M3x4 DIN7985 9 ×M3x8 DIN7991 8 ×PVC washers
Use 8 M3x4 screws and
washers around GPU cores!
Standoff key
Brass M4-M3
2.5mm standoff
Fitting with o-ring
EK-Extender G1/4
with o-ring
Plug with o-ring
Tightening the standoffs:
Standoff key
Attach the backplate
using 9 M3x8 DIN7991
screws!
Plug with o-ring
6mm Allen key