13
Be certain all guards and safety apparatus are installed completely prior to start-up.
Connect all pressure monitoring and temperature monitoring equipment and confirm they are
functioning correctly.
Be certain all down-stream valves, etc., are open.
Start motor at the intended operating speed. Slowly close the downstream valves to allow for
gradual pressure rise
.
If the pump uses Packing seals:
I
NOTE
Slight leakage is necessary to lubricate the packing during operation.
WARNING
If not appropriately collected, packing leakage may make floor slippery and/or expose personnel
to hazardous fluids. Collect packing leakage properly and safely.
➢
Tighten the packing follower screws in a crossing pattern, gradually, until the packing is evenly
compressed and the leakage diminishes to near zero, then loosen each of the screws,
gradually, ¼ turn at a time, until slight leakage occurs. Slight leakage is necessary in order to
lubricate the packing and the shaft.
Be certain to adjust the packing follower properly.
Do not over-tighten the packing follower. Over-tightening will cause damage to the packing
and the shaft.
Other sealing options are available.
➢
Re-adjust the packing follower several times through the running-in period, until the seal is
thoroughly seated and the rate of leakage is stable.
F
Operation / Shutdown / Restart
F.1 Heating, Cooling During Operation
If the pump is to be operated outside of room temperature (10°C
–
45°C), care must be taken to ensure the
process temperature is met and maintained prior to and during operation. Monitor the pump temperature
and ensure the target temperature has been met and maintained. Allow ample time for the pump to adjust
and stabilize. Ensure any temperature changes occur gently, thoroughly and evenly (including the seal
arrangement).
Protect the pump from thermal shocks of greater than 28°C (50°F) / sec. This could occur from liquid
entering the pump, from rapid changes in the temperature of the environment of from fire. Rapid
temperature changes must be avoided. Preheating is required when a pump’s operating temperature is
greater than 28°C (50°F) above ambient temperature.
F.2 Shutdown
The pump may need to be purged of the process fluid during shutdown. Use of a purging liquid (an inert,
lubricating liquid which is safe to the pump and personnel,) is recommended, rather than simply attempting
to drain the process fluid from the pump.
Run the pump slowly during the purging process in order to ensure no damage occurs.
