R
oyal
E
xclusiv
p
umps
&
skimmers
Since 1986
Klaus Jansen //
Richard-Byrd-Str. 7 // 50829 Cologne // Germany
Fon +49(0)221/222886 0 // Fax +49(0)221/22288622
[email protected] // www.royal-exclusiv.de
For more information, please visit
www.royal-exclusiv.de
. Simply enter the part number or name into
the search box or email:
.
All information subject to change. We try our best, but printing errors reserved.
3. Maintenance and cleaning of the RD3
Please solve the 4 titanium screws on the base plate. To
do this, please use a sufficiently large screwdriver. After
loosen the screws, pull release the complete motor-block
out of the column
(figure below: removal of the pump)
.
With a medium-sized screwdriver loosen the four housing
screws. Three in the front and one from the back.
Pull the housing cover to the front. Pull out the wheel unit
from the front. If the wheel unit is extremely calcified, care
-
fully insert a small screw driver into the gap between the
motor block and housing cover, then lift slightly.
Caution:
Never apply force to the wheel unit.
Disconnect the pump from the power supply prior to each
maintenance work.
Red Dragon
®
supply- and flow pumps
are essentially to be classified as low-maintenance. Usu
-
ally the necessary maintenance work is limited to a check
of the impeller for obstruction. Remove obstacles from the
impeller with a slim and spiky tool. A decreasing supply
rate is often the result of dirt. Possible calcinations (espe-
cially in saltwater applications) has to be removed with a
very soft acid as for instance vinegar. Avoid applying pres-
sure to the sides of the impeller or the rotor. The pump can
be disassembled nearly completely for cleaning.
In freshwater- and saltwater applications calcification only
appears in very hard water and after a complete re-filling
of the pond. After this the largest amount of carbonate will
be omitted within 2-3 days.
To dismount the pumps head from the engine, unscrew
the M5 hexagon socket titanium screws with a matching
spanner. When this is done the whole pumps head can be
removed. I necessary the impeller unit can be removed, by
cautiously pulling on the rotor with. When you pull on the
rotor, be very careful, as the impeller is held in its position
by the magnet. If you release the rotor while trying to pull it
out, the bearing can get a serious damage.
Do not underestimate the power of the magnet.
If you slightly lose the grip and the axis hits the rear
bearing, the risk to damage the bearing is very high.
A damage bearing causes high reparation costs.
Use fitting hexagon key to loosen the 4 screws from the
case.
Grab rotor and cautiously pull out completely.
Check parts for calcification.
After the maintenance you can assemble the pump in
reversed order. Please pay attention to first only loosely
fix the in crossed over order and then fix them semi-solid
(hand tight).
For the usage of a cordless screwdriver see the picture.
The O-seals of the pump are made from silicone or EPDM/
Viton, depending on the application.
Please use only fresh and original O-seals with the correct
thickness and hardness as replacement. When O-seals
are aging, the hardness slightly changes. When you re-as-
semble the pump, the O-seals should always be replaced
by new ones. This will increase the lifespan of the pump.
Silicone and EPDM / Viton O-seals are resistant against
acids and bases.
Decalcify the pump completely. Please do not use hy-
drochloric acid, not even in extenuated form. This may
damage the pump beyond repair. After the decalcification
purge the pump with clear water. Re-assemble the pump.
Decalcify the wheel unit using
a suitable decalcifying bath.
NEVER
use hydrochloric acid
even if diluted
!!!
The pump could get seriously damaged.
5
