Table of Contents
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1.
Type identification ........................................................................................................................... 2
1.1
Nameplate ........................................................................................................................................................... 2
1.2
Type key .............................................................................................................................................................. 2
1.3
Key to codes ........................................................................................................................................................ 3
2.
Tightening torques and lubricants................................................................................................. 4
3.
Service tools .................................................................................................................................... 5
3.1
Special tools ........................................................................................................................................................ 5
3.2
Standard tools...................................................................................................................................................... 5
3.3
Torque tools......................................................................................................................................................... 5
4.
Dismantling and assembly ............................................................................................................. 6
4.1
General information ............................................................................................................................................. 6
4.2
Removing the pump head and motor .................................................................................................................. 6
4.3
Removing the impeller ......................................................................................................................................... 6
4.4
Removing the shaft seal and pump head ............................................................................................................ 6
4.5
Removing the pump shaft.................................................................................................................................... 6
4.6
Fitting the pump shaft .......................................................................................................................................... 6
4.7
Fitting the pump head and shaft seal................................................................................................................... 6
4.8
Fitting the impeller ............................................................................................................................................... 7
4.9
Fitting the pump head and motor......................................................................................................................... 7
5.
Maintenance ..................................................................................................................................... 8
5.1
Pump ................................................................................................................................................................... 8
5.2
Motor.................................................................................................................................................................... 8
5.3
Service by Grundfos ............................................................................................................................................ 8
6.
Start-up ............................................................................................................................................. 9
6.1
Priming................................................................................................................................................................. 9
6.2
Checking the direction of rotation ........................................................................................................................ 9
6.3
Start-up ................................................................................................................................................................ 9
6.4
Restarting ............................................................................................................................................................ 9
6.5
Stopping............................................................................................................................................................... 9
7.
Fault finding ................................................................................................................................... 10
8.
Drawings......................................................................................................................................... 12
8.1
MTB 50-200/215, 65-160/158 and 65-160/171 (pump with feet)....................................................................... 12
8.2
MTB 65-200/183 and 65-200/199 (motor with feet)........................................................................................... 13
GB
96649460 1006
13
1 / 13
Service instructions
MTB
50 Hz
3~
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Table of Contents
Related Manuals for Grundfos MTB Series
Summary of Contents for Grundfos MTB Series
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Page 1: Table Of Contents
Fitting the impeller ............................... 7 Fitting the pump head and motor......................... 7 Maintenance ............................. 8 Pump ................................... 8 Motor..................................8 Service by Grundfos ............................8 Start-up ............................. 9 Priming................................. 9 Checking the direction of rotation ........................9 Start-up ................................9 Restarting ................................ -
Page 2: Type Identification
1. Type identification This section shows the type key, nameplate and the codes that can appear in the variant code. 1.1 Nameplate The pump nameplate is fitted on the upper side of the pump head. Type MTB 50 - 200/119 A - F - A - BQQV A 96580752 P2 .... -
Page 3: Key To Codes
1.3 Key to codes Code for pump version Code Description Basic version Code for pipe connection Code Description DIN flange Code for materials, excluding plastic and rubber parts Code Description Cast iron Code for materials, including plastic and rubber parts Code Description Rubber bellows seal... -
Page 4: Tightening Torques And Lubricants
2. Tightening torques and lubricants Pos. Description Quantity Dimensions Torque [Nm] Lubricant Pump head Soapy water Set screw Loctite 243 Air vent screw Priming and drain plug Staybolt 6 or 8 6 or 8 O-ring Soapy water Shaft seal Soapy water 4 / 13... -
Page 5: Service Tools
3. Service tools The following drawings and tables show special, standard and torque tools for pump service. 3.1 Special tools Pos. Designation For pos. Description Part number Pinch bar 2, 6 3.2 Standard tools Pos. Designation For pos. Description Part number Ring/open-end spanner 17, 20, 36, 36a, 67 Bit holder... -
Page 6: Dismantling And Assembly
4. Dismantling and assembly 4.1 General information Follow these instructions if it is necessary to dismantle the pump, either because it is clogged or damaged. Position numbers of parts (digits) refer to Drawings; position numbers of tools (letters) refer to 3. -
Page 7: Fitting The Impeller
4.8 Fitting the impeller 1. Fit the impeller (pos. 49) on the pump shaft. 2. Fit the washer (pos. 66), spring washer (pos. 66a) and nut (pos. 67) on the pump shaft. Tighten the nut to a torque of 80 Nm. 4.9 Fitting the pump head and motor 1. -
Page 8: Maintenance
If a pump has been used for a liquid which is injurious to health or toxic, the pump will be classified as contaminated. If Grundfos is requested to service such a pump, Grundfos must be contacted with details about the pumped liquid, etc. before the pump is returned for service. -
Page 9: Start-Up
6. Start-up Fit the coupling guard before starting the pump. Note: Do not start the pump until it has been filled with liquid and vented. In hot-water installations, special attention should be paid to the risk of personal injury caused by scalding hot water. 6.1 Priming The suction pipe and the pump must be filled with liquid and vented before the pump is started. -
Page 10: Fault Finding
7. Fault finding Before removing the terminal box cover and before any dismantling of the pump, make sure that the electricity supply has been switched off. It must be ensured that it cannot be accidentally switched on. Fault Cause Remedy 1. - Page 11 Fault Cause Remedy 9. Noise a) Cavitation occurs in the pump. Increase the inlet pressure or reduce the liquid temperature. b) Pump does not rotate freely (frictional re- Adjust the shaft and check the shaft seal. sistance) because of incorrect pump shaft position.
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Page 12: Drawings
8. Drawings 8.1 MTB 50-200/215, 65-160/158 and 65-160/171 (pump with feet) 12 / 13... -
Page 13: Mtb 65-200/183 And 65-200/199 (Motor With Feet)
8.2 MTB 65-200/183 and 65-200/199 (motor with feet) 13 / 13...
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