172-65116M-02 (CP-N) 16 Jun 2011
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6. After the concrete around the foundation bolts has solidified, fasten nuts on the
foundation bolts tightly. In this case, check the alignment of the coupling.
7. After checking the coupling, fill the interior of the bed with mortar so that no cavities
are left.
8. After finishing the above procedure, install the inlet (pump suction side) and outlet
(pump delivery side) pipes.
Piping (cf. Standard piping diagram)
Follow the instructions below when piping.
1. When constructing the piping at the pump suction and delivery sides, pay attention
not to exert undue force on the pump, as this often causes problems.
2. Hot condensate causes the pipes to expand.
NOTE: Use flexible pipes to protect the pump from undue force caused by pipe
expansion.
3. Vibration of the suction and delivery piping causes problems.
NOTE: Avoid the transmission of vibration to the pump by the use of flexible pipes.
4. To minimize head losses in the suction pipe, avoid bends and sudden change of
cross-sectional area.
5. Install a riser pipe of at least 1 m at the pump suction side excluding the liquid-vapor
separator header.
6. Install a pressure gauge at the condensate header.
7. Install a gate valve and a strainer at the pump suction. Select a strainer with a cross-
sectional area three or four times that of the suction pipe.
8. Install a check valve and gate valve at the delivery side. It is recommended that the
gate valve is installed as close as possible to the pump delivery port and the check
valve is located between the delivery port and the gate valve.
9. Small pipes for cooling water, feed water and circulation water should also be
carefully installed in the same manner as the main pipe so that the pump is not
subjected to undue force. Before installing, check these small pipes for foreign
matter. If foreign matter exists, clean the pipe thoroughly by blowing through before
connecting the pipe.
10. Also clean the main pipe by blowing through before connecting the pipe.
11. After completing the piping, check the alignment of pump and motor again for
misalignment that may have occurred during piping.
NOTE: Please use flexible, vibration-absorbing pipes for pump service.
