Control Elements - Wilo Helix VE 2 Série Notice De Montage Et De Mise En Service

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8. Commissioning
8.1 Filling and degassing the system
CAUTION!
Never operate the pump dry.
The system must be filled before starting
the pump.
8.1.1 Venting – Pump in inlet mode (Fig.
- Close the two guard valves (2 + 3).
- Open the drain cock of the venting plug (6a).
- Slowly open the valve on the suction side (2).
- Close the drain cock once the air has escaped
and the liquid is flowing in the pump (6a).
WARNING!
If the pumped fluid is hot and under high pressure,
the fluid escaping at the drain cock may cause
burns or other injuries.
- Open the guard valve on the suction side
completely (2).
- Start the pump.
8.1.2 Venting process – Pump in suction mode
(Fig. 2)
- Close the guard valve on the discharge side (3).
Open the guard valve on the suction side (2).
- Remove the filling plug (6b).
- Partially open the priming/drain plug
- Fill the pump and the suction pipe with water.
- Ensure that there is no air trapped in the pump
and suction pipe. Fill the system until all air is
removed.
- Close the filling plug (6b).
- Start the pump and verify that the direction of
rotation complies with the specification printed
on the pump sticker. If this is not the case, inter-
change two phases in the motor terminal.
CAUTION!
An incorrect direction of rotation will cause
poor pump performance and may damage the
coupling.
- Slightly open the guard valve on the discharge
side (3).
- Unscrew the drain cock to remove the air (6a).
- Close the drain cock once the air has escaped
and the liquid is flowing in the pump.
WARNING!
If the pumped fluid is hot and under high pressure,
the fluid escaping at the drain cock may cause
burns or other
- Open the guard valve on the discharge side
fully (3).
- Close the priming/drain plug (5a).
54
Risk of damage to the pump!
3)
Risk of burns!
(5b).
injuries.
8.2 Starting
CAUTION! Risk of property damage!
The pump must not operate at zero flow
(discharge valve closed).
WARNING! Risk of injury!
Coupling guards must be in place and secured by
all required screws when the pump is running.
WARNING! High noise levels!
High­power pumps may emit a high noise level.
Use appropriate protection when working close to
the pump for any extended period.
WARNING!
The installation must be laid out in such a way
that there is no risk of injury in case of fluid leak-
age (e.g. caused by mechanical seal failure).
8.3 Operation of the converter

8.3.1 Control elements

The converter is controlled using the following
control elements:
Rotary knob
• Selecting a new parameter only requires rotating
the knob in direction "+" to the right or "­" to
the left.
• A short impulse on the rotary knob confirms this
new setting.
DIP switches
This converter has a block of five DIP switches
(Fig. 1D, pos. 1) each with two positions.
ON
1 2 3 4 5
• DIP switch 1 switches from "OPERATION"
mode [DIP switch 1 OFF] to "SERVICE" mode
[DIP switch 1 ON] and back again. The
"OPERATION" position authorises the opera-
tion of the chosen mode and stops access to
the parameterisation (normal operation). The
"SERVICE" position allows the user to carry out
parameterisation of the different operations.
• DIP switch 2 is used to activate or deactivate the
"Access lock" (see section 8.3.6.5).
• DIP switches 3 and 4 must be kept in the
ON position.
• DIP switch 5 is not used and must be kept in the
OFF position.
Relay
(see section 10)
WILO SE 03/2019