④
Attach the oil drain plug and sight glass to the seal case.
⑤
Insert the seal washer (with liquid gasket applied to both sides) and mechanical seal rotor (large)
into the casing cover and fasten them with the mechanical seal stationary plate.
⑥
Attach the O ring and asseble the casing
cover and seal case.
※At this moment, be careful that the sliding
surface of the mechanical seal does not come
in contact with the shaft and other parts.
⑦
Turn the shaft by hand to check whether there
is anything wrong with the shaft.
Conduct air tightness tests as necessary.
Air tightness test: Leave the mechanical seal for 10 minutes with a pressure of 0.3 MPa applied to
air at room temperature from the threaded hole of the oil feed plug.
⑧
Pour oil through the oil feed plug and attach the oil feed plug and eye bolt.
※Pour the specified amount of oil. Too much or too little oil may cause early failure.
⑨
Attach the seal washer (with liquid gasket applied to both sides)
and boss cover to the shaft.
⑩
The impeller is of screw type. Secure the shaft and screw
the impeller squarely into the shaft clockwise.
※ The impeller is a rubber lined product. Be careful not to
damage it. Do no hit it with a hammer.
⑪
Turn the shaft by hand to check whether the impeller comes in contact with the suction cover.
4、Assembling the pump （pump）
① Attach the rotating part to the assembly on the casing side.
②
Turn the shaft by hand to check whether the impeller
comes in contact with the suction cover.
※
Take out the nut
Take out the nut
Take out the nut
Take out the nut
to remove the rotating part from the
assembly on the casing side. Never take out the bolt.
- 17 -
An air tightness test shows whether the mechanical seal has been assembled properly.
Apply silicon grease to the thread and attach the impeller.
Bos
s
cover
Im
pell
er
Seal washer
O ring
Mechanical seal
Casing cover
Sight glass
Oil drain plug
Mechanical seal
Seal washer
Oil feed plug
Eye bolt
Assembly on the casing side
Rotating part
Spring washer
Nut
