06
4.3.1- General characteristics of the pump foundation (baseplate)
You should work carefully for preparation of the pump base and installation of the pump
group in place. Improper and careless installation may cause excessive vibration and premature
wear of the pump equipment as well as pump failure.
ATTENTION
Figure 2.
Foundation, baseplate and anchor bolt
Concrete
Anchor Bolt
20 - 40 mm
Shim
Baseplate
Sleeve
• Sizes of the foundation concrete should be determined on basis of minimum 10% excess of the
frame dimensions.
• Pump foundation should be independent of other foundation and platforms.
• Pump foundation should be capable to absorb vibrations and bear the loads to apply on the pump
unit during operation.
• Place and dimension of the anchor bolts should be determined according to the hole dimensions
of the pump unit.
• Washer should be used to prevent tension and distortion when tightening the foundation bolts.
• In order that the foundation bolts should align with the connection holes of the frame exactly and
to allow for minor adjustments, the bolts are inserted into the bushings. The bushings should be
place in such a way that they will not exceed top surface of the foundation concrete.
4.3.2-
Placement of the Pump Group
•Preparation and pour of the foundation concrete mass.
- The concrete mass is formed according to its dimensions.
-The locations of the anchor bolts are measured and marked carefully and Styrofoam is
cut tothe dimension, placed and fixed.
-The concrete is poured
Volume ratio: Cement 1: sand 2: gravel 4
Concrete hardens within 7 days (hardening may be shortened by use of special cement).
- Upon hardening of the concrete, the Styrofoam is burned and removed. Locations of anchor
bolts appear in the concrete.
- Top surface of the concrete and holes of the anchor bolts are cleaned.
• Placement of the frame on the foundation concrete mass. (first adjustment)
- Anchor bolts are mounted on the frame.
- The frame is placed on the flattening chocks and the anchor bolts remain suspended
in the holes. Make sure that the anchor bolts remain vertical.
- Levelness of the frame is controlled in both directions from the pump and engine
placement location by use of precise spirit level 0,25 ÷ 0,40 mm/m is acceptable.
- Anchor holes are fileed with concrete. Anchor bolts are thus fixed.
