2. HANDLING PROCEDURE
2.1 Assembly of Piping
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Locatio n
(1) Mount the Pump on a clean, flat & level surface of sufficient rigidity. If it should installed outdoor, check
motor, V-Belt and other part are for outdoor service.
(2) There should be enough space for maintenance like disassembly, reassembly and periodical inspection,
etc.
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Foundat ion
(1) The foundation concrete should have an adequate pressure bearing area, in consideration of the weight
of the pump and a withstanding pressure of the soil, because it could be subsided or inclined if the soil is
weak. The mix ratio of the concrete is 1-cement, 2-sand and 4-gravel.
(2) In order to embed anchor bolts in the concrete, the foundation must have holes of good size, and its
surface should be as even as possible.
(3) Upon confirmation that the concrete has been hardened, proceed with assembly of piping.
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Installati on
(1) Mount the pump horizontally and center it.
(2) Place the pump on the foundation, and support the base frame equally by inserting a choke liner between
the pump and the foundation surface so that the bed will be made horizontal and also a space for grouting
the cement mortar is obtained between the foundation surface and the bed.
(3) Put anchor blots in place on the bed preliminarily, set nuts on the full head of bolts, and leave them
pendulous in the bolt holes.
At this time, if the bed is supported locally, it could be deformed, notwithstanding its strength. Choke liners
stricken here and they will help support it properly.
(4) Assure the level by using a level meter: Check the levelness on the machined surface.
The levelness should be limited to 0.5mm in any one meter.
(5) Grout the cement mortar made up from 1-cement and 2-sand in the space under the bed and in anchor
bolt holes, and keep for few days. Upon hardening of the mortar, tighten the nuts for anchor bolts.
At this time, take care not to tighten them one sidedly.
2.2 Piping Work
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Main Piping
(1) Clean inside of suction and discharge pipe to be free from rust, dust and foreign matters, and place a
strainer of 40 mesh on or over suction side(All the pumps shipped from our shop are equipped with this
mesh filters at suction port).
(2) It is advisable to install expansion joint on the suction side as well as the discharge side of the pump.
Also, provide supports for piping so that no excessive load to be imposed on the pump.
(3) In case, Silencer is provided on discharge side, install it as near opening as possible.
(4) Be sure to install a Non-return Valve adjacent to the suction or discharge opening so that the pump will not
turn reversely. If installation of the Non-return Valve is a problem for service of the pump, install a gate
valve instead, and assure to shut off prior to stopping the pump.
(5) In case, the risk of condensate gas being collected on the pump discharge pipe, set a recovery tank under
the pump, and then the condensate gas and water will be collect during operation and be discharged by
opening of drain valve.
(6) Drain receiver should be installed under the drain valve to collect those discharged.
