Fristam Pumps FKL 15, Original Instructions Manual, Page: 13 / 40

13
6.8 Cleaning
Only use cleaning agents that comply with the hygiene guide-
lines for the respective pumping medium.
1. Before sealing the pump ensure that there are no foreign
objects inside the pump or pipes.
2. Seal the pump.
3. Connect the pipes.
4. Thoroughly clean the pump and the pipe system before ini-
tial use.
7 Operation
7.1 Safety Instructions
Closed Valve in Discharge Line
Serious personal injury and material damage from bursting of
system due to excessive pressure buildup.
►
Before turning on and during operation of the system, en-
sure that all valves in the discharge line are open.
► Install bypass for pressure limitation.
Closed Valve in Suction Line
Damage to shaft seal by dry running of pump.
► Before turning on and during operation of the system, en-
sure that all valves in the suction line are open.
►
Regulate the pump output only by means of the discharge-
side valve.
No Medium in Pump
Dry running of pump. Damage to shaft seal.
►
Ensure that there is always medium in the pump before and
during operation.
7.2 Commencement of Operation
NOTICE
For double shaft seal:

Stoppage of Sealing Liquid
Damage to shaft seal.
Ensure that during operation:
► The sealing liquid flows with the necessary pressure through
the double shaft seal.
The prescribed sealing fluid pressure is specified in the "Or-
der-related documents" in the sectional drawing of the shaft
seal. The "Order-related documents" are included in this op-
erating manual.
– Negative pressure in the seal chamber is not allowed.
If no pressure is noted in the "Sectional drawing of the shaft
seal", the following applies:
– A max. pressure of 0.2 bar is allowed for seals to which
sealing fluid is applied without pressure or which are
flushed.
► The temperature of the sealing liquid is maintained at
T < 70 °C.
1. Open the valve in the suction line.
2. Open the valve in the discharge line.
3. Fill the pump and the suction line up to the upper edge of
the pump with pumping medium. Allow any air pockets that
are present to escape.
4. Only for pumps with sealing or quenching liquid:
Check the required sealing pressure. For the maximum seal-
ing pressure, see the specifications on the
Sectional Drawing
of the Shaft Seal in the attached documents.
5. Turn on the motor.
7.3 Monitoring of Operation
Follow the safety instructions given below while the pump is
operating.
NOTICE
Foreign Objects in Pumping Medium
Blocking of rotors and shearing off of shafts.
► Rule out the possibility of foreign objects in the pumping
medium.
– Install a current limiter to protect the gear motor.
NOTICE
Sudden Closing of Valves in Discharge Line
Damage to pumping medium by water hammers in the pump.
► During operation do not close the valve in the discharge line
abruptly or for a long period of time.
NOTICE
Rapid Cooling of Pump
Tension cracks in pump.
– Do not rapidly cool the pump.
NOTICE
Cavitation and Dry Running of Pump
Damage to shaft seal.
– Ensure that suction-side valves are open during operation.