Start-up
12
INOXPA S.A.U.
· 01.610.30.11EN · (0) 2021/05
6. Start-up
Before starting the pump, carefully read the instructions in section
5. Installation
Carefully read section
9. Technical Specifications
. INOXPA will not be liable for improper use of the
equipment.
NEVER touch the pump or the lines if hot liquids are being pumped.
6.1. CHECKS BEFORE STARTING THE PUMP
•
Completely open the shut-off valves on the suction and discharge lines.
•
If liquid does not flow towards the pump, fill it with the liquid to be pumped.
The pump must never turn dry.
•
Check that the power supply matches the rating indicated on the motor plate.
•
Check that the direction of rotation of the motor is the right one.
•
If the pump has a double or a cooled mechanical seal, mount the auxiliary connection corresponding to the
6.2. CHECKS WHEN STARTING THE PUMP
•
Check that the pump is not making any strange noises.
•
Check if the absolute inlet pressure is sufficient to prevent cavitation in the pump. See the curve to
determine the minimum pressure required above steam pressure (NPSHr).
•
Control the discharge pressure.
•
Check for leaks in the sealing areas.
Shut-off valves on the suction pipe must not be used to regulate the flow. All shut-off valves must
be fully open during operation.
Control the motor consumption to prevent an electrical overload.
6.3. BY-PASS PRESSURE
If the pump has an incorporated pressure by-pass, the rotation can be of only one direction. To invert the
direction of rotation, mount an overflow valve as indicated in the next figure. The single stage pump has the
overflow valve calibrated at 6 bar and 10 bar for the double stage ones.
0
1
.6
1
0
.3
2
.0
0
0
8
ATTENTION
ATTENTION
ATTENTION
