Johnson Pump MDR Series - General Precautions; Standard Parts

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MDR/EN (0909) 1.0
1.6 General precautions
• Donotrundry.Ifthepumpisrunwithoutliquid,frictionheatwillbegeneratedinside
the pump which will melt the impeller onto the ceramic shaft and also possibly cause
damage to other parts.
• Donotusethepumpforotherliquidsthanquotedforwithoutconsultingyour
SPX Process Equipment distributor.
• Donotrunagainstclosedvalve.Thepumpwillbedamagedifitisrunmorethan3
minutes against closed valve.
• Donotrunreverse.Theimpellermustrotateinclockwisedirectionwhenviewedfrom
the motor end (see rotation arrrow on the pump body).
• Donotrunwithcavitationorairentrainment.
• Donotrunwithuidcontainingsolidorabrasiveparticleswithoutconsultingyour
local distributor.
• Donotexposethepumptothermalchocks.
• Checktheimpellerbearing,shaftandwearplatesregularlyforwear(seesection4.4).
• Donotcausechockpressure.
1.7 Standard parts
1. Pump body 4. Impeller 7. Magnet housing 10. Flange
2. Wear plate 5. Ceramic
shaft
8. Reinforcement
(not available for MDR45)
11. Motor
3. Bearing 6. O-ring 9. Drive magnet
6542332
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79810
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