33
2. Fully open the shut-off element in the suction line.
3. Fully open all auxiliary connections (barrier fluid, flushing liquid, etc).
6.1.5 Final check
1. Remove the coupling guard and step guard, if any.
2. Check the coupling alignment; re-align the coupling, if required. ( Section 5.6 Page 26)
3. Check that the coupling and shaft can easily be rotated by hand.
4. Re-install the coupling guard and step guard, if any.
5. Check the distance between coupling and coupling guard. The coupling guard must not
touch the coupling.
Observe the following quality data of the cooling water:
. Not deposit forming
. Not aggressive
. Free from suspended solids
. Hardness on average 5 °dH (~1mmol/l)
. pH > 8
. Conditioned and neutral with regard to mechanical corrosion
. Inlet temperature t
E
= 10 to 30 °C
. Outlet temperature t
A
= maximum 45 °C
6.1.6 Water cooling
6.1.7 Cooling of the shaft seal
Table 13: Cooling of the shaft seal
5)
C AUTION
Deposit-forming, aggressive cooling water
Damage to the pump!
Observe the cooling water quality.
C AUTION
Vaporisation pressure of fluid handled higher than atmospheric pressure
Damage to the shaft seal/pump!
Cool the shaft seal.
Provide sufficient quantities of cooling liquid (see table).
NOTE
The vaporisation pressure varies depending on the fluid handled, the system pressure
and the material of the shaft seal (e.g. hot water).
Bearing bracket
Cooling liquid quantity in l/min at a product temperature of
" K " design
Standard design
up to 250 °C
up to 400 °C
up to 400 °C
UP02
3
4
3
4
UP03
4
5
4
5
UP04
5
6
4
5
UP05
5
6
5
6
up to 250 °C
5) Not possible for conical seal chamber .
6 Commissioning/Start-up/Shutdown
