VLT
Vertical Process Pump
50 V1.090418
• Monitor the power consumption of the drive motor. Low or excessive power consumption
may indicate a possible fault.
• Check the sealing system:
a. Refer to the seal manufacturer for his estimate of maximum acceptable leakage rate,
as this will depend on application, design, location, and the sealed liquid
characteristics.
b. If leakage is excessive, switch the pump off as quickly as possible, isolate the pump by
closing the discharge and suction valves or by using some other approved method
designated as safe for your system, and check the rotating seal ring and the stationary
seal ring.
If the sealing system of the mechanical seal fails, the pump must be taken out
of operation immediately.
The pump may only be operated under the minimum operating range for short
periods. The minimum pump flow is given in the characteristic line.
7.4 DOWELING (OPTIONAL)
When the pump has reached temperature and operational pressure:
1. Stop the pump.
2. Check alignment and reset equipment if required
3. Dowel the pump (if it applies).
4. Dowel the driver.
5. Startup the pump as detailed in SECTION 7.2 STARTUP.
7.5 STOPPING
1. Close the discharge valve slowly.
2. Turn the power off to the driver.
3. Observe the run-down of the pump until full stop.
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