VLT
Vertical Process Pump
29 V1.090418
The impeller setting shown on the pump’s nameplate is for duty conditions. For
any other working conditions, check the driver for signs of overload. This is
performed by comparing the amperage drawn against a full load amperage as
stated in the nameplate. If the driver is being overloaded, the impeller might be
rubbing against the bowl. Use the procedure stated on steps 1 – 8 to raise the
impellers until the unit is operating properly.
9. The mechanical seal must be adjusted. Refer to the seal manufacturer’s manual for further
information.
10. Attach the coupling guards to cover the windows on the nozzle head.
11. Follow the instructions provided in the driver manufacturer’s manual to lubricate the
driver. The pump is self-lubricating.
12. Connect the suction and discharge piping to the pump. Make sure these connections do
not impose any kind of stress on the pump.
13. Check the pump’s shaft to ensure it rotates freely.
4.4.4 Grout
NOTE: The information included in this section is intended as a general guideline. For further
information refer to the corresponding section in API Recommended Practices 686.
IMPORTANT: It is recommended that the customer consult a competent specialist skilled in the field
of grouting to insure proper installation of all grouting.
Grouting avoids the lateral displacement of the discharge but it does not correct the irregularities of
the foundation.
To grout the pump follow the next steps:
1. Build a wooden form around the discharge head to contain the grout.
2. Mix the grout using a part of cement and two parts of construction sand and enough
water to make a paste.
3. Wet the foundation very well with water and pour the grout in the wooden form, making
sure that the mixture flows freely under the discharge head.
4. Using a rigid wire, mix the grout to remove any trapped air.
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