2.2. Deliming and cleaning the impeller
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 carbon-
ate will be omitted within 2-3 days.
If necessary the impeller unit can be removed, by cau-
tiously pulling on the rotor. 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.
Please loosen the 4 screws, then the housing cover
/ pump head can be pulled forward. Pull out the wheel
unit from the front. If the wheel unit is extremely calcified,
carefully 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.
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).
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 cor-
rect thickness and hardness as replacement. When
O-seals are aging, the hardness slightly changes. When
you re-assemble 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 re-
sistant 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 decal-
cification 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.
For more information, look at the net at
www.royal-exclusiv.de
. Simply enter the part number or name into the search box
or email to:
. All information without guarantee. We try our best, but printing errors reserved.
For more information, look at the net at
www.royal-exclusiv.de
. Simply enter the part number or name into the search box
or email to:
. All information without guarantee. We try our best, but printing errors reserved.
5
For more information, look at the net at
www.royal-exclusiv.de
. Simply enter the part number or name into the search box
or email to:
. All information without guarantee. We try our best, but printing errors reserved.
4
