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Inspection after Unpacking

Upon unpacking, check the following points to confirm that the product is what you 

have ordered. If you find anything wrong, please contact the dealer you placed your 

order with.

 

1

   Do the model of pump, discharge, discharge pressure, voltage, and other items 

shown on the nameplate correspond with those of the pump ordered by you?

 

2

   Is the product not damaged or are the nuts and bolts not loosened during delivery? 

Please examine by sight or touch.

 

Principle of Operation

The Iwaki Magnet Gear Pump comprises a 

pair of gears driven by a magnet coupling 

and casing in which the gears are fitted 

exactly. (Fig. A)

Liquid introduced from the IN side feeds 

into the grooves between the teeth of the 

gears and is transferred to the OUT side by 

rotation of the gears. (Fig. B)

This liquid is forced out of the grooves 

between the gear teeth by meshing of the 

gears. (Fig. C)

IN

OUT

Fig.A

Fig.B

Fig.C

IN

OUT

Summary of Contents for MDG-M4 series

Page 1: ...Guangzhou TEL 86 2084350603 FAX 2084359181 Spain IWAKI Europe GmbH Spain Branch TEL 34 933770198 FAX 934740991 China GFTZIWAKIEngineering Trading Beijing TEL 86 1064427713 FAX 1064427712 Sweden IWAKI...

Page 2: ...des 5 Names of Parts and Structure 6 Precautionary measures 7 Installation Piping and Wiring 9 Operation 11 Maintenance and Inspection 13 Disassembling and Reassembling 14 Causes of Trouble and Troubl...

Page 3: ...lves toxic or odorous liquid Ventilate the operating site sufficiently Spill out accident Protective measures should be taken against any accidental spill out or leakage of the operating liquid as a r...

Page 4: ...Is the product not damaged or are the nuts and bolts not loosened during delivery Please examine by sight or touch Principle of Operation The Iwaki Magnet Gear Pump comprises a pair of gears driven by...

Page 5: ...0 C Viscosity below 30mPa s T Temperature between 0 and 95 C Viscosity below 80mPa s 100W motor below 200mPa s 150W motor Represents the maximum discharge pressure 6 0 6MPa Connection B 1 4NPT Line vo...

Page 6: ...body 1 4 Driving magnet ass y 1 set 20 Shaft spring 1 5 Rear casing 1 25 Cap 1 6 Magnet capsule 1 28 Screw M3 10 6 7 Mounting plate 1 29 Screw M4 35 4 9 Driving gear shaft 1 30 Screw M3 25 4 10 Gaske...

Page 7: ...ollowing temperature range The performance will change depending on the temperature of the liquid Type S 0 50 C Type T 0 95 C In case the liquid being handled is a solvent the gears may swell to force...

Page 8: ...plash water on the motor This may cause an electric leak or burning 6 Do not cover the motor unit tightly with a cover etc Avoid operating the pump at an ambient temperature above 40 C The relative hu...

Page 9: ...uid in the tank on the suction side Flooded suction 3 In case it is necessary to install an S type pump in a position in which the inlet of the pump remains higher than the liquid surface a suction li...

Page 10: ...pump is lowered 3 For connection use a thick hose which can withstand pump pressure Since the hose on the suction side particularly tends to be crushed by sucking force the use of for example a Teflon...

Page 11: ...starting up should be confirmed Starting up The following items must be checked when starting up the pump No Item Remarks 1 Confirmation of piping wiring and voltage Confirm piping and electrical wiri...

Page 12: ...ormally abnormal noise or vibration tends to be generated Base on which pump is mounted sometimes becomes resonant increasing noise If separation of pump from base decreases noise anti vibration measu...

Page 13: ...is noticeably lowered substitute the gear case unit and the driving gear shaft with new ones Consumable Parts No Part Number Raplacement Time 47 Gear Case Unit 1 set 5 000 hours 9 Driving Gear shaft 1...

Page 14: ...in this order 3 Unscrew the screws 30 and remove the gear unit 47 gasket 10 drive gear shaft 9 and shaft spring 20 in this order 4 Remove the O ring 11 Put the dismantled parts in a clean place Take c...

Page 15: ...g to the gear case unit 47 as illustrated 2 In attaching the gear unit 47 tighten the small screws 30 uniformly Clamping torque 1N m 3 If the O ring is flawed replace it with a new one 4 When the life...

Page 16: ...se in liquid temperature Motor cannot be started Motor start but rpm does not increase and excess current is generated Motor stops while in operation Liquid cannot be pumped up or pumping is insuffi c...

Page 17: ...tor Capacitor Run Type 7 9 MDG M4S6B220 1 220 240 0 70 0 84 MDG M4T6B115L 3 8 4 6 8 00 1 115 1 5 1 7 MDG M4T6B220 1 220 240 0 70 0 84 MDG M4T6B220H 1 4 1 5 150 180 8 2 Note 1 Above is the performance...

Page 18: ...18 Outer Sizes Models MDG M4 Models MDG M4 H OUT IN E 40 107 89 110 130 120 122 242 65 122 5 2 Rc1 4 2 Rc1 4 E OUT IN 89 110 130 40 107 119 120 239 65 132 5...

Page 19: ...ler with whom you placed your order 2 Before requesting repair peruse this instruction manual again and recheck the product 3 When you request repair the following information is needed Model code and...

Page 20: ...Guangzhou TEL 86 2084350603 FAX 2084359181 Spain IWAKI Europe GmbH Spain Branch TEL 34 933770198 FAX 934740991 China GFTZIWAKIEngineering Trading Beijing TEL 86 1064427713 FAX 1064427712 Sweden IWAKI...

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