Submersible Pump · Pumps
On board vessels, Grindex Master Drainage Pumps are commonly used to handle drainage tasks efficiently. These pumps come in three configurations—Master N for normal head, Master H for high head, and Master SH for super high head applications. The hydraulic design ensures a high performance-to-weight ratio, making them an economical choice with minimal wear over time. Each pump model features a robust 3-phase electrical submersible setup, rated at 15 horsepower and capable of handling solids up to 0.4 inches in diameter. With a maximum submersion depth of 20 meters and a discharge connection size varying between 3 inches (Master SH) to 6 inches (Master N), these pumps are designed for versatile use in maritime environments. The compact design, weighing between 80 kg to 98 kg depending on the model, makes installation straightforward, while their IP 68 classification ensures they can operate effectively even in harsh conditions.
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Source: pmsupply-inc.com · not checked against a manufacturer datasheet
| Seal chamber oil check/change | typically every 1000 running hours or annually, whichever comes first - confirm against Grindex's service schedule |
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| Insulation resistance test | before each redeployment after storage, and at least annually |
| Impeller/wear plate inspection | annually or when a drop in performance is noticed |
| Cable and plug inspection | at each deployment and at minimum every 6 months |
Typical intervals for this design class, not the manufacturer’s figures for your model. The manufacturer’s manual is binding.
| Seal chamber oil insulation resistance | should read in the high-megohm range when dry; a low or dropping reading over successive checks indicates seal wear - compare against Grindex's acceptance value in the pump manual |
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Ranges are typical for this design class. Always confirm against the manufacturer documentation for your serial number.
Portable submersible drainage pumps are typically checked as part of the vessel's damage control / emergency equipment inventory rather than under machinery continuous survey. Surveyors commonly expect evidence of periodic function testing and that the pump, cable, and lifting gear are in serviceable condition for emergency deployment.
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