Document: U99_001
page 16 of 24
devices is not permissible! Protecting devices must not be dismantled during operation. If a dismantling of protecting
devices is necessary, pay attention, that they are reinstalled before next start of machine...
6.2.6.2
Acoustic-emission protection
In the proximity of the aggregate must be ear protection is generally necessary.
For combustion engines use a silencer with high damping to avoid noise pollution beyond site.
The instructions of operator regarding health and safety at work as well as to accident control mus tbe
obeyed.
6.2.6.3
Power supply
Protecting devices at electric components must correspond to DIN- und VDE-regulations. They must
be installed before starting the machine and must not be dismantled during operation.
Consider
2. Safety
6.3 Starting-up
6.3.1
Commissioning
Before starting with commissioning, the operating manual must be completely studied and understood by the operator in
order to avoid any accidents or damage. The commissioning must be done as follows:
Check all protecting devices
Check functioning of periphery, for example cooling systems (if existing)
Consider
6.2.3 Shaft Seal
at execution with gland packing
Suction- and feed valves must be completely open
The pressure valve must be slightly open
Pipe work and pump must be completely filled with medium and completely vented
After starting the pump, adjust the capacity via the pressure valve. By no means the capacity is to be adjustet by
means of the suction valve. When adjusting the capacity, must be observed, that the pump never works in an
area, where the motor may be overloaded. Pay attention, that no longer operation of the pump takes place with
very low flow (less than 10% of the maximum possible rate of flow).
Ensure that the pump does not operate while the shut-off devices are closed as during this kind of operation high forces
are acting onto the impeller and the bearing apparatus. The energy supplied by means of the impeller is transformed into
thermal energy and results in boiling of the pumping liquid as via the pumping medium no heat abstraction is performed.
Therefrom resulting damage caused by cavitation or by the overload of bearings may occur within very short time. In this
case guaranty expires.
6.4 Instructions to operation of machine
6.4.1
Starting frequency
Supplied electric motors are performed for the duty class S 1/permanent operation.
6.4.2
Operation with throttled gate valve (minimum rate of flow)
The minimum flow rate is to be set at approximately 20 % of the maximum possible rate of flow.
6.4.3
Operation with closed gate valve
The operation with closed gate valve is inadmissible - even for a very short time. See
6.3.1. Commissioning
6.4.4
Stand-by operation
Pumps, which are operated stand-by, must be taken into operation at least once a week. The operating time must allow the
evenly warm up of the pump to regular operating temperature.
Observe maintenance intervals.