Assembly/Installation; Operation; Maintenance - Wilo -Drain VC 32 Einbau- Und Betriebsanleitung

medium. The stop-adjustable float switch automatically ensu-
res correct operation of the pump.
VC 32: switch on motor terminal box (Fig. 1, pos. 1)
VC 40: separately mounted switch box (Fig. 2, pos. 1)
4.2 Products delivered
– VC pump complete with built-in float switch
– Installation and operating instructions
4.3 Accessories
Accessories must be ordered separately.
– Non-return valve
– Shut-off fittings
– Pipe screws
– Flange / counter flange
5 Assembly / Installation
5.1 Assembly (Fig. 1, 2)
Place the pump complete with built-in float switch upright in a
shaft or other container on a flat, fixed surface.
– Maximum shaft depth 950 mm, motor and switching applian-
ce must not be flooded. Minimum shaft dimensions 450 x
450 mm.
– The pump must be installed in a frost-free place.
– The shaft must be free from coarse solids (e.g. building rub-
ble) prior to installation and commissioning.
– The float switch must be free to move unhindered.
– Fixing the float switch connecting rod (Fig. 3):
– Place the indented end of the float rod into the hole provi-
ded on the switching lever horizontally (A) then move
down to a vertical position (B).
– Pull the switching lever and float rod up to the highest
switch setting and gently bend the lower end of the rod
into the hole provided in the pump housing.
To set the pump switch-on and switch-off points, adjust the
fixing screws on the float stops.
– The VC 40 pump can be fixed into 2 horizontal shaft covering
halves (Fig. 2, pos. 2) using a fixing flange (Fig. 4).
– Always ensure that the connection cable
ATTENTION!
does not become damaged when lowering
the pump into the shaft.
– Do not use the cable to lower the pump!
– Vertical position only.
– For outdoor assembly, all piping, valves,
electronic controls, etc. must be suitably
protected from frost and all other damage.
5.2 Hydraulic connections
– Switch the electricity supply off before connecting the pres-
sure pipe to the pump.
– Diameter of the pressure pipe connection VC 32: 1"
– Connect the pump ensuring that
– the weight of the pump is not bearing down on the pressu-
re pipe connection
– the load of the pressure pipe does not act on the connec-
ting sleeve.
– The customer must ensure the pipe weights are supported.
5.3 Electrical connection
The electrical connection should be made by a qua-
lified electrician. Current national regulations must
be observed (e.g. VDE regulations in Germany).
– Ensure all electrical installations comply with the IEC 364
standard and that the mains supply is equipped with a resi-
dual current operated circuit-breaker of max. 30 mA.
– Mains fuse 16 A, time-lag
– Ensure that the increased starting currents of
1~Motor, 4 to 5 times the nominal motor current, and
3~Motor, 6 to 7 times the nominal motor current,
are drawn off by the mains network.
– The electrical connection must be made before the pump is
lowered into the shaft.
– Check that the mains current and voltage comply with the
data on the rating plate.
– The pump must be earthed in compliance with regulations.
– Assignment of supply terminals (Fig. 5) (Fig. 6) :
Single-phase motor
– VC 32: 1~230 V
Connect the electricity directly to the motor terminal box:
N, L1, PE: connector cables required: 3 x 0.75 mm
Factory-assigned: 1 = black, 2,3 = white, 4 = red,
5 = yellow, 6 = blue, 7 = brown, 8 = green
Three-phase motor
– VC 32: 3~230 V
Connect the electricity directly to the motor terminal box:
L1, L2, L3, PE connector cables required: 4 x 0.75 mm
– VC 40: 3~400 V
Connect the electricity directly to the motor terminal box:
L1, L2, L3, PE connector cables required: 4 x 1.55 mm
– For three-phase motors it is advisable to install a motor
safety switch. Set the nominal motor current in accordan-
ce with the rating plate data.
– Direction of rotation (only for three-phase motors)
The correct direction of rotation must be tested before the
pump is submerged. The correct direction of rotation is
indicated by a directional arrow on the motor.
If the direction of rotation is incorrect, 2 of the mains con-
nection phases must be switched.

6 Operation

6.1 Filling and ventilating the unit
– The water level may not be reduced below the minimum
immersion depth of the pump housing. The level control
must be set at the minimum level: Fig. 1/2.
– The pump can only be filled and bled when the pump hou-
sing is fully immersed.
– Always ensure the float can move freely.
6.2 Start of pump operation
– Start the pump and ensure that the built-in shut-off fittings
are open.
ATTENTION!
VC 40: 1|"
– The float switch will now automatically ensure correct opera-
tion of the pump.
– Check the current consumption. The current consumption
must comply with the data on the rating plate.

7 Maintenance

Should the impeller become blocked with solids, proceed as
follows:
– Detach the pump from the pressure pipe connection.
The pump must never be used to empty a swimming
pool while there are still bathers in the water.
Do not allow the pump to run dry! The pumping
liquid lubricates the friction bearing.
Prior to maintenance or repair work, turn off the
pump and ensure that it is not turned on by unautho-
rised personnel.
This pump requires practically no maintenance at all.
ENGLISH
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