Mody Pumps MHC4, 7.5HP - Manual (Page 4)

TECHNICAL DESCRIPTION:
THE MODY SUBMERSIBLE PUMP IS IN ITSELF A COMPLETE PUMPING STATION. BESIDES A
POWER SUPPLY AND A DISCHARGE HOSE NO EXTRA EQUIPMENT IS REQUIRED. THE COMPLETE
PUMPSET IS IN A MODULAR CONSTRUCTION ENSURING GOOD AND SIMPLE SERVICEABILITY.
THE MAJOR DESIGN FEATURES ARE AS UNDER:
THE MOTOR
A RUGGED ALUMINUM DIE CAST/COPPER ROTOR DYNAMICALLY BALANCED TO GRADE 2.5
ACCURACY OF ISO 942.A STAINLESS STEEL SHAFT RUNNING IN TWO BALL BEARINGS.
INSULATION CLASS "F" (155 DEGREES CELSIUS). END WINDINGS DULY EPOXY COATED TO
PREVENT DETERIORATION OF INSULATION EVEN IN EXTREMELY HUMID CONDITIONS. WINDING
WIRE IS DUAL COATED SUITABLE FOR "H" CLASS INSULATION.
THE SEAL CHAMBER
THE HEART OF THE MODY PUMP. DOUBLE MECHANICAL SILICON CARBIDE V/S SILICON
CARBIDE SEAL FACES - SECONDARY SEALS OF HNBR RUBBER AND METAL PARTS IN
STAINLESS STEEL, RUNNING IN AN OIL BATH, ENCLOSED IN A PRESSURE COMPENSATING
RUBBER OIL CHAMBER - CREATES THE ULTIMATE SEAL SOLUTION. THE DESIGN OPTIMIZES
SEAL LIFE AND ALLOWS FOR SIX MONTHLY (2500 HOURS) SERVICE INTERVALS.
BEARINGS:
SINGLE ROW DEEP GROOVE UPPER BALL BEARINGS SEALED FOR LIFE WITH SPECIAL HIGH
TEMPERATURE BEARING GREASE REQUIRING NO PERIODIC MAINTENANCE WHATSOEVER.
ANGULAR CONTACT LOWER BEARINGS.
THE HYDRAULIC ELEMENTS :
28% HI-CHROME IMPELLER, SUCTION COVER, VOLUTE AND WEAR PLATE PROVIDE THE
HIGHEST LEVEL OF ABRASION RESISTANCE FOR SLURRY PUMPING.
CABLE GLAND ASSEMBLY. (REFER DRG.)
THE PUMP IS SUPPLIED WITH 25 FEET CABLE AS STANDARD. THE CABLE IS A 4 CORE EPR
SHEATHED AND INSULATED CABLE CONFORMING TO INTERNATIONAL STANDARDS. THE CABLE
IS WATERPROOF AND CAN BE COMPLETELY SUBMERGED IN WATER. THE CABLE IS TERMINATED
IN THE PUMP AT THE CABLE GLAND. THE GLAND ASSEMBLY SEALS THE CABLE ON THE
OUTSIDE SHEATH AS WELL AS A WATER DAM ARRANGEMENT IS PROVIDED WHICH SEALS THE
INDIVIDUAL CORES OF THE CABLE. THIS FEATURE IS UNIQUE AND IS ESSENTIAL TO
PREVENT WATER SEEPING THROUGH THE CORES OF THE CABLE INTO THE CONTACTOR CHAMBER
IN THE EVENT OF A CUT CABLE. COMPLETE DETAILS OF THE CABLE GLAND ASSEMBLY ARE
SHOWN IN THE DRAWING.
OIL SPECIFICATIONS
USE NON-CONDUCTING, NON-FOAMING OIL ONLY
A) H.P. ENKLO OIL 46/48
B) SHELL TELLUS 29.
C) CHEVRON SUPERLA WHITE # 9