07
• Never use the pump as a point of support or bearer for the piping system.
ATTENTION
Volume ratio: Cement 1 : sand 1.5: gravel 3
Concrete hardens within 7 days (hardening time may be shortened by use of special cement).
• Fixing of the frame on the foundation concrete mass exactly by adjustment.
- The area about 30mm between the foundation concrete mass and frame is formed and
concrete is poured through the holes in the frame.
Volume ratio: Cement 1: sand 2
Concrete hardens within 2 days.
- Frame remains adjusted and fixed on the foundation concrete.
4.4- Installation of the Piping System
4.4.1- General Warning
• The piping system should be supported at points near to the pump. For this purpose, after completion
of the installation of the piping system, loosen the bolts of the suction and delivery flanges and
control whether the piping system applies any tension on the pump. The maximum allowable forces
and moments on the flanges are given in
Table 1.
•
Rated diameter of the suction and delivery flanges of the pump are not indicator of the correct
sizes of the suction and delivery pipes at all. The rated diameter of the pipes and accessories used
should be equal to or larger than the inlet diameters of the pump at least. Never use pipes and
accessories having smaller diameter than the inlet diameters of the pump. Especıally components
such as, strainer, dirt-retaining filter and check valves with larger free passage area should be preferred.
• Pipe connections should be made with the flanges. Flange bolts should be made of proper material
and in proper size. The flange bolts should be inserted between the flange bolts and centred in such
way that it would not impair flow section.
• In case of excessive vibrations, expansion parts should be used in order that any extra forces that
may arise from thermal expansion are not transferred to the pump.
• Materials such as welding burrs, metal particles, sand and oakum arising from production of fhe
piping system may remain in the pump and give damage to the pump. The suction and delivery
flanges should be sealed blind washers in order to prevent such materials from entering into the
pump during the assembly operations. After assembly, all pipe parts should be removed, cleaned,
painted and reassembled. If dirt-retainer is used on the suction side of the pump, the dirt-retainer
should be cleaned after working for several days.
