KSB CHTRa, Инструкция по установке и эксплуатации

Страница: 69 / 116

6 Commissioning/Start-up/Shutdown
69 of 116
CHTRa
6.7.2.2 Turbine-driven pump set
ü Observe the instructions concerning the turning gear.
(
ð Section 6.3.3.2, Page 60) ( ð Section 6.7.1.2, Page 67)
(
ð
Section 6.7.1.3, Page 67)
ü Operate the pump set by means of the turning gear until the pump casing
temperature is ≤ 80
℃ .
1. Close the shut-off element in the discharge line.
2. Make sure the minimum flow valve works.
3. Switch off the drive, making sure it runs smoothly down to a standstill.
4. Note the run-down time.
CAUTION
Pump set started up inadvertently
Damage to the pump!
▷ Secure drive against unintentional start-up, e. g. by disconnecting the motor.
5. Close the shut-off valve in the minimum flow pipe.
6. Close the shut-off element in the inlet pipe.
7. Turn off the cooling water when the casing temperature (measured at the
pump nozzles) is lower than 50 °C.
8. Close all other pipes.
6.8 Work after shutdown
6.8.1 Work after shutdown with the pump set remaining ready for operation
General Information
If the period of standstill during readiness for instant start-up is longer than 2 weeks,
the pump set components such as gear or motor must be protected against water
ingress and humidity as described in the manufacturer’s preservation instructions.
Every 4 to 6 weeks
▪
Start up the pump set.
▪ After approximately 10 minutes shut down the pump set.
(
ð Section 6.7, Page 67)
▪ Check whether the pump rotor runs down smoothly to a standstill.
Every two months (in the case of pump set with variable speed coupling)
▪ If the scoop tube actuator was used during stand-by operation, re-lubricate the
guide bush. Comply with the manufacturer’s product literature.
6.8.2 Work after shutdown for standstill - Pump not ready for operation
CAUTION
Danger of frost/freezing
Damage to the pump!
▷ If there is any risk of freezing or in the event of prolonged standstill, drain and
preserve the pump.
In the case of danger of frost and standstill > 2 weeks, drain and preserve the pump.
General information
▪
Make sure that the drive cannot be switched on.
▪ Secure all valves against opening.
▪ Close all openings and supply lines.