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WFS 1545 Operations Manual
SECTION II COMMISSIONING
COMMISSIONING
Commissioning the system after all of the proper connections and set-up have been completed consists
primarily of filling the system including all plumbing lines and filter housings with water and bleeding air
from the filter housings. This is accomplished in the following steps:
•
Filling the Internal Circulating Loop
•
Filling the Process Water Circuit
•
Filling the Lift Station
Each of these steps listed below is an iterative process requiring starting and stopping the various pumps
several times while maintaining sufficient water level to prevent pump cavitation.
NOTE: Because of the low flow capacity of the auto-fill valve it is helpful to have a second source of water to
manually maintain reservoir level during commissioning.
1.
COMMISIONING PREREQUISITES
Verify and check the following:
•
Close the ball valves for the three (3) facility plumbing connections to the WFS Unit.
•
All plumbing connections to process and lift station are complete.
•
Lift Station is installed and proper facility power is on.
NOTE: The lift station will not run until a certain water level in the holding tank is reached.
•
Process cooling water is gravity drained and collected into the lift station. The lift station
discharge is connected to the Process Water Return connection.
•
Facility water supply is open to the Water Make-Up line.
•
Verify that the proper three (3) phase electrical power with ground is connected.
WARNING!
To be performed by qualified personnel only.
2.
FILLING THE RESERVOIR
Obtaining and maintaining the proper operating level in all of the reservoir chambers is an iterative
process. It requires starting and stopping pumps until all components in the system are fill with
water and the system is at equilibrium. The description herein assumes that the system is starting
with all of the filter housings, chiller chambers and process lines empty.
WARNING!
: Water from the air bleed valves may come out at high velocity. Keep personnel from their
opening. If sensitive equipment is in the vicinity attach appropriate fittings and hose to direct water to
safe container.
CAUTION:
The pumps can pull water from the reservoir much faster than the make-up lines can restore.
For that reason, the reservoir filling process requires careful observation until equilibrium is achieved.
CAUTION:
If the water level in the reservoir is too low, air will be drawn into the pump inlet and can
cause damage.
