Electric Connection; Final Control; Start-Up, Operation, Shut Down; Initial Start-Up - Lowara TDB Série Instructions Pour L'installation Et L'emploi

Installation, Operating and Maintenance Instruction

5.5 Electric Connection

Electrical connection work may only be carried
out by an authorised professional. The rules
and regulations valid for electrical technology,
especially those
measures, must be observed. The regulations
of the national power supply companies
operating in that area must also be observed.
Before starting work, check that the information on the
motor name plate is the same as the local mains
network. The power supply cable of the coupled drive
motor must be connected up in accordance with the
wiring diagram produced by the motor manufacturer. A
protective motor switch must be provided.

6. Start-up, Operation, Shut down

The plant may only be started up by people who
are familiar with the local safety regulations and
with these Operating Instructions (especially
with the safety
instructions given here).
Hints for the use as boiler feed pump
Limits for cast iron when used in boiler feed or
condensate applications:
(optimum ≥ 9,3), short term: pH-value ≥ 8,5.
The above stated values must be guarantied at
the suction side of the pump in any case.
The water treatment must be in acc. with the
specifications for water treatment of boiler feed
water in steam plants up to 64 bar.
Air traps in the system must be avoided in any
case.

6.1 Initial start-up

Before starting up the pump, check, if the following
points were controlled and carried out:
With pumps of designs TDB and TDV, no
additional lubrication measures are required
before the first startup.
Pump and suction pipe must be filled completely
with liquid when starting up. Open the screwed
plug for filling. Close them when water is flowing
out.
Turn pump unit once again by hand and check
that it moves smoothly and evenly.
Check that coupling guard is installed and that all
safety devices are operational.
Switch on any sealing, flushing or cooling devices
that are provided. See Data Sheet for quantity
and pressure.
Open valve in suction /intake pipe.
Set the pressure-side slider to approx. 25% of
the pump rate for which the system was
designed. For pumps with a drive output lower
than 30 kW, the slider may also remain closed
briefly upon startup.
Secure, that unit is electrically connected acc. to
all regulations and with all safety devices.
TDB, TDV
concerned with safety
regulations and
pH-value
≥
page 60
The direction of rotation must only be checked
when the pump is full. Dry running will cause
damage to the pump.

5.6 Final Control

Check alignment of coupling acc. to chapter 5.3 again.
It must be possible to turn the unit easily by hand at
the coupling.
Check direction of rotation by switching on and
off briefly. It must be the same as the directional
arrow on the bearing frame.
safety

6.2 Switch on drive

Immediately (max. 10 seconds on 50 Hz resp.)
after reaching normal operating speed open
discharge valve adjust the required operating
9,0
point. The pumping data shown at the type plate
resp. in the data sheet and / or the order
confirmation must be met. Every change is only
permitted after talking with the manufacturer!
Operation with closed valve in the suction and /
or discharge piping is not permitted.
On starting-up without back-pressure, the back-
pressure must be produced through throttling at
the discharge side. After reaching full back-
pressure open valve
In order that the shaft sealing can be monitored
and maintained unhindered, no protection cover
is provided in this area. Therefore special
attention is required when pump is working (no
long hair, loose clothes, a.s.o.).
Mechanical seals:
Mech. seals don't need to be maintained and are
almost free of leakage.
If pump does not reach attended head or if
atypical sounds or vibrations do occur:
Switch off pump and seek for causes

6.3 Restarting

Basically, the same procedure should be followed as
for starting up for the first time. However, there is no
need to check the direction of rotation and the
accessibility of the pump unit.
The pump should only be automatically restarted if it
has been made sure that the pump has remained
filled whilst stand by.
Model TDB, TDV
Revision 01
Issue 06/2012