KSB HPK-L, Installation & Operating Manual

Page: 35 / 74

6 Commissioning/Start-up/Shutdown
35 of 74
HPK-L
1136.8/15-EN
6 Commissioning/Start-up/Shutdown
6.1 Commissioning/Start-up
6.1.1 Prerequisites for commissioning/start-up
Before commissioning/starting up the pump set, make sure that the following
conditions are met:
▪ The pump set has been properly connected to the power supply and is equipped
with all protection devices. (
ð
Section 5.7, Page 32)
▪
The pump, including the bearing bracket (mechanical seal chamber), has been
primed with the fluid to be handled.
▪
The direction of rotation has been checked. ( ð Section 5.8, Page 34)
▪ The lubricants have been checked. ( ð Section 6.1.2, Page 35)
▪ After prolonged shutdown of the pump (set), the activities required for returning
the equipment to service have been carried out. (
ð Section 6.4, Page 43)
NOTE
Hot water shall comply with the requirements of the VdTÜV technical instruction
leaflet TCH 1466/AGFW 5-15 (edition 2.89) as a minimum.
Do not exceed the following limits:
Table 13: Limits for hot water
Limits
Electrical conductivity < 250 µs/cm
pH at 25 °C 9-10,5
Silicates (SiO
2
) < 10 mg/l
Solids < 5 mg/l
NOTE
No warranty can be given for the service life of mechanical seals if hot water with
an electrical conductivity exceeding 250 µs/cm or hot water of unknown water
quality is handled.
For ultra-pure water (fully desalinated, demineralised water) with an electrical
conductivity < 2 µs/cm, the temperature at the seal faces must be at least 20 % below
the boiling point.
NOTE
When conditioners producing a greasy film on the mechanical seal faces are used,
e.g. Maxigard, Antifrogen N, Preventol Cl-2, KeboX, Nalfleet 9-11, no warranty can
be given on the seal life because of their adverse effect on the seal. In such cases
please contact KSB.
6.1.2 Filling in lubricants
Grease-lubricated bearings have been packed with grease at the factory.
6.1.3 Shaft seal
Observe the instructions on dismantling (
ð
Section 7.4.7, Page 51) or assembly
( ð Section 7.5, Page 53) .
When new plants are commissioned, large amounts of foreign matter in the system
and a short service life of mechanical seals are to be expected during the initial phase
of operation.