5-4
5.2.2
Mechanical seal (MTP/MTP-e)
(1) The mechanical seal is a precision part for preventing water leakage from the clearance of the
pump shaft. Carefully handle the seal to ensure the proper operation of the pump.
(2) The mechanical seal is a consumable. It wears at a different rate depending on the properties of
circulating liquid, the presence of foreign matter, operating pressure, and other factors; and the
service life changes accordingly
(3) If there is any water leakage at the mechanical seal, replace it.
During the initial period of running a new pump, a small amount of leak may occur until the sliding
surfaces on the mechanical seal completely settle (or fit) into place, and the leak should stop in
several hours of operation. Since this initial leak does not mean a defect of the mechanical seal,
you can normally use the pump.
5.3 Bearings
(MSP/MSP-e)
Some models of MSP/MSP-e (for 5 stages and over with 40-65 diameter and 4 stages and over
with 80 diameters) use open ball bearings or angular ball bearings. These bearings are filled with
grease, which require periodical replacement or grease replenishment.
The grease should be replaced once a year as a guide. In an area with lost of dust or corrosive
gas, however, replace the grease at an earlier timing.
Caution
Do not supply excessive quantity of grease into the bearing. Too much
grease may cause abnormal heat generation. Fill the grease with standard
amount which is equivalent to 1/3 in the bearing case. Use the brand of
grease shown below or the equivalent.
Maker Grease
Name
Cosmo Oil
Grease Dynamax Super No.2
