Checking The Pump; Replacement Of Parts - Grundfos KC Instrucciones De Instalación Y Funcionamiento

4.2 Checking the Pump

Before starting work on the pump, make
sure that the electricity supply has been
switched off and that it cannot be acciden-
tally switched on.
Under normal operating conditions, the pump is
maintenance-free.
If the pump does not deliver a sufficient quantity of
water, it may be worn, blocked by impurities, etc. In
this case, the pump should be dismantled, checked
and cleaned, if required.
Dismantling of the pump, see fig. 5.
Fig. 5
A
ON
B
C
D
1. Disconnect the electricity supply.
2. Remove the strainer by means of a screwdriver
or a similar tool, see fig. 4.
3. Slacken the screw at the bottom of the pump and
remove the pump housing.
4. Clean the strainer, the impeller, the pump hous-
ing and the discharge port.
Check that the pump parts are intact and that the
impeller is free to rotate and to move up and
down.
Replace possible defective parts, see section

4.3 Replacement of Parts.

5. Assemble the pump. Take care not to damage the
rubber gasket (O-ring). To facilitate the fitting of
the gasket, moisten it with water.
If the pump has been used for chlorinated water or
other liquids than clean water, it must be flushed
through with clean water after use.
6
4.3 Replacement of Parts
The part numbers and the components included in
the service kits will appear from the tables and fig. 5.
* Applies to pumps produced after 01.05.98.
Service Kit
Impeller + nut
Rubber gasket
Pump housing
OFF
Strainer
Removal and fitting of impeller and nut:
KC1: Hold the shaft by means of a ring/open-end
spanner (size 10) and turn the impeller in the direc-
tion shown (left-hand thread), see fig. 5.
KC2 and KC3: Hold the shaft by means of a screw-
driver and turn the impeller in the direction shown
(left-hand thread), see fig. 5.
If pump components other than those mentioned in
the service kits are damaged or defective, special
tools are required. Please contact your pump sup-
plier.
A possible replacement of the electric cable or the
level switch, if fitted, must be carried out by an au-
thorized GRUNDFOS service workshop.
Pump Type Part Number
Impeller + Nut
KC1M, KC1A 96 00 09 23
*
KC1M, KC1A 96 02 22 25
KC2M, KC2A 96 00 09 24
KC3M, KC3A 96 00 09 25
Rubber Gasket
KC1M, KC1A ID 82 79
KC2M, KC2A ID 82 80
KC3M, KC3A ID 82 81
Pump Housing
KC1M, KC1A 96 00 09 17
KC2M, KC2A 96 00 09 18
KC3M, KC3A 96 00 09 19
Strainer
KC1M, KC1A 96 00 03 81
KC2M, KC2A 96 00 04 15
KC3M, KC3A 96 00 04 35
*
Pos.
A
B
C
D