Stuart Turner FLOMATE MBF 12 Manual de servicio

Cont ...

INSTALLATION INSTRUCTIONS

SERVICE KIT - FLOMATE, MBF 12 (Pre-November 2017) Part No. 28457

Note: 1) Items 16, 23, 24 are pre-assemble parts, see relevant section for detailed instructions.

2) See relevant section for detailed instructions.

Fig. 1

20 (Section 3)

Capacitor (not shown)

17 (Section 5)

PCB

(not shown)

19 (Section 3 & 5)

Adhesive foam pad

(not shown)

1 (Section 1)

Woodruff key

7 (Section 1)

‘O’-ring (ID 66.4)

5 (Section 1)

Washer (OD ¾)

8 (Section 1)

Screws M6 x 35 mm

6 (Section 1)

Circlip

4 (Section 1)

Rotary seal

3 (Section 1)

Seal

counterface

18 (Section 4)

Strainer relief bush

(not shown)

21 (Section 4)

Reed switch

12 (Section 2)

Screws (M4 x 16 mm)

16 (Section 2)

Non return

valve assembly

13 (Section 2 & 4)

Reed switch tie wrap

10 (Section 2)

Clip

11 (Section 2)

Magnetic float

14 (Section 2)

Flow regulator

15 (Section 2)

‘O’-ring (ID 24.6)

23 (Section 2)

Inlet assembly

2 (Section 1)

Thrower

22 (Sections 3, 4 & 5)

Screws (K40 x 16 mm)

24 (Section 2)

Outlet assembly

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• COMPLETE KIT CONTENTS

This kit contains parts for a range of different pump types - please ensure you correctly identify

the relevant parts for the pump being serviced before commencing. Also refer to the relevant

section for detailed instructions for the correct installation of the parts.

Fitting of incorrectly identified parts could lead to pump failure. If in doubt

contact PumpAssist on +44 (0) 800 31 969 80.

ITEM QTY ITEM QTY

1 Woodruff Key 1 13 Reed Switch Tie Wrap 1

2 Thrower 1 14 Flow Regulator 1

3 Seal Counterface 1 15 ‘O’-ring (ID 24.6 mm) 2

4 Rotary Seal 1 16 Non-Return Valve Assembly 1

5 Washer (ID 3/8 “x OD ¾ “) 1 17 PCB (not shown) 1

6 Circlip 1 18 Strainer Relief Bush (not shown) 1

7 ‘O’-ring (ID 66.40, c/sec 1.78) 1 19 Adhesive Foam Pad (not shown) 1

8 Screws (M6 x 35 mm) 4 20 Capacitor (not shown) 1

9 Seal Applicator Tool (not shown) 1 21 Reed Switch 1

10 Clip 1 22 Screws (K40 x 16 mm) 4

11 Magnetic Float 1 23 Inlet Assembly 1

12 Screws (M4 x 16) 4 24 Outlet Assembly 1

Check to see that you have all the above items and that they are not damaged. If any damage is

found contact Stuart Turner Ltd within 24 hours of receipt.

• PUMP PREPARATION

To prepare the pump to accept the service kit parts, each pump part must be removed noting

its exact position and sequence (Fig. 1).

Now clean all the individual parts. Before fitting the new service kit parts, the pump and seal

type must be identified.

• CONTENTS PAGE

Section 1 Mechanical seal replacement .................................. 3

Section 2 Valve replacement ........................................... 5

Section 3 Capacitor replacement........................................ 8

Section 4 Reed switch replacement ..................................... 10

Section 5 Printed circuit board replacement ............................... 13

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SECTION 1 - MECHANICAL SEAL REPLACEMENT

The parts required to replace the seal are:

ITEM QTY ITEM QTY

1 Woodruff Key 1 6 Circlip 1

2 Thrower 1 7 ‘O’-ring (ID 66.40, c/sec 1.78) 1

3 Seal Counterface 1 8 Screws (M6 x 35 mm) 4

4 Rotary Seal 1 9 Seal Applicator Tool (not shown) 1

5 Washer (ID 3/8 "x OD ¾ ") 1

• PUMP PREPARATION

1. Turn off and isolate power supply.

2. Isolate and drain down pump of liquid.

3. To prepare the pump to accept the service kit parts, each pump part must be removed

noting its exact position and sequence.

Difficulties may be experienced in the removal of the impeller. To overcome this, 2

screwdrivers can be used to prize the impeller from the shaft as shown; ensuring equal

pressure is applied to each side of the impeller to avoid shaft bending.

4. Clean all the components not replaced by the service kit.

• SEAL IDENTIFICATION

The seal as supplied is shown in order of assembly in Fig. 3.

A Seal seat complete with rubber cup washer.

B Rotary seal assembly.

C Stainless steel washer.

D Seal retaining clip.

Fig. 2

NOTE: DO NOT USE EXCESSIVE

FORCE, AS THIS MAY DAMAGE THE

COMPONENTS

Fig. 3

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Cont ...

• MAINTENANCE AND CARE UPON ASSEMBLY

To allow ease of assembly along with correct functioning of

the pump, the following points on assembly are necessary.

• All pump parts must be free from debris and

assembled correctly.

• The seal must always be replaced as a complete unit

using the seal applicator tool as provided.

• The seal faces must not be handled or damaged.

• The impeller must be a slide fit on the shaft.

Side 2

Applicator Tool (Item 9)

Side 1

Fig. 4

To assemble the seal correctly, the shaft must be clean and the following steps carried out.

1 Use Side 1 of the Applicator Tool to push the seal seat (item A) firmly into the housing

ensuring it is located flat against back of housing.

2 Now use Side 2 of the Applicator Tool to push the rotary section of the seal assembly

(item B) onto the motor shaft until it is flat against the seal seat (Fig. 5). The shaft may be

lubricated with clean water to assist assembly.

Assemble the spring and location plate onto the shaft so as to complete the rotary seal

assembly (Fig. 6).

3 The washer (item C) can then be placed on the shaft and the whole assembly held into

position by locating the E clip (item D) in the groove and pushing it into position (Fig. 7).

WARNING:- Do not install E Clip onto full shaft diameter.

• INITIAL OPERATING INSTRUCTIONS

• Insert screwdriver into motor shaft slot located at fan cowl end of motor, rotate shaft by

hand to ensure free rotation of pump.

• Do not run pump dry. Allow the liquid to be pumped to enter the pump body thus ensuring

the seal is lubricated before switching the pump on. Failure to do this will damage the seal.

• Carefully check pump and pipework for leaks whilst pump running and stationary before

leaving the installation unattended.

Fig. 5 Fig. 6 Fig. 7

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Cont ...

SECTION 2 - VALVE REPLACEMENT

The parts required to replace the valve are:

ITEM QTY ITEM QTY

10 Clip 1 16* Non Return Valve 1

11 Magnetic Float 1 16* Crossflow Pipe 1

12 Screw, M4 x 16 mm 4 23* Inlet Assembly 1

13 Reed Clamp Tie 1 24* Oulet Assembly 1

14 Flow Regulator - 12 l/min 1 23,24* ‘O’-ring, ID 13, c/sec 3 mm 2

15 ‘O’-ring, ID 24.60, c/sec 2.40 2

*Parts pre-assembled

• DISASSEMBLY (Reference Fig.1)

• Remove the existing reed switch by cutting the securing tie wrap (Item 13).

• Remove four screws (Item 12) and carefully remove manifold assembly from pump.

• Carefully dismantle the outlet assembly (Item 24), inlet assembly (Item 23), NRV assembly

(Item 16) and manifold clamps (Item A) – see Fig. 8.

Fig. 8

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Cont ...

• REASSEMBLY

• Fit the flow regulator (Item 14) into new outlet assembly, fit the magnetic float (Item 11) into

outlet assembly (see Fig. 10) and assemble circlip (Item 10) using fine point pliers as shown in

Fig. 9.

• Reverse the disassembly instructions with the new replacement parts fitted as required.

• Parts can be lubricated with clean water to aid assembly.

• Secure manifold clamp screws, to a torque of 1.5 Nm. (Item 12).

Note – it is imperative that the new flow regulator (item 14) is fitted during this operation as

NOT to do so will infringe Regulation 5 of the Water Supply Regulations that states any pump

fitted to the mains supply pipe can only draw 12 l/min or less.

Note – Ensure the manifold clamps (item A) are placed over the outlet assembly (Item 24) and

inlet port (Item 23) BEFORE assembling them onto the NRV assembly (item 16), see Fig. 10.

Note - For the correct operation of the NRV assembly (Item 16), the ‘O’-rings must be sat into the

inlet assembly and the outlet assembly grooves before fitting the NRV assembly as shown in

Fig. 11.

Fig. 10

Fig. 9

Fig. 11

Outlet assembly

Inlet assembly

‘O’-rings

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Cont ...

Note – For correct operation the NRV assembly (item 16) must be fitted with the orientation

groove to the left (inlet port side) as shown in Fig. 12.

For correct operation of the flow switch, the reed must be secured to the body as detailed

below.

Firstly feed the tie warp through the retainer on the reed switch, ensuring that the tie wrap

serrations are facing outwards (see Fig. 13).

Now locate the reed switch within the body groove as highlighted X-X in Fig. 14 below, and

feed the tie wrap through the second catch.

The tie wrap can now be pulled tight to secure the reed and the excess cut to length as shown

in Fig. 15.

• INITIAL OPERATING INSTRUCTIONS

• Do not run pump dry. Allow the liquid to be pumped to enter the pump body thus ensuring

the seal is lubricated before switching the pump on. Failure to do this will damage the seal.

• Carefully check pump and pipework for leaks whilst pump running and stationary before

leaving the installation unattended.

Fig. 12

Inlet Port

Orientation groove

to the left

Outlet Port

Fig. 13

Serrations

Catch

Fig. 14 Fig. 15

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Cont ...

SECTION 3 - CAPACITOR REPLACEMENT

The parts required to replace the capacitor are:

ITEM QTY ITEM QTY

19 Adhesive Foam Pad 1 22 Screws (K40 x 16 mm) 4

20 Capacitor 1

• DISASSEMBLY

• Isolate electrical supply before fitting replacement part.

• Replacing the capacitor, should only be carried out by a competent

person.

• The supply cord and internal wiring within the terminal box are routed

and secured to ensure compliance with the electrical standard

EN 60335-1. It is essential that prior to any disturbance of this internal

wiring, all cable routing and securing details are carefully noted to

ensure reassembly to the same factory pattern is always maintained.

Reference Fig 16:

• Remove 4 screws (item 22), and carefully remove terminal box lid.

• IMPORTANT: Take note of capacitor wiring connection and colours before removal.

Disconnect and remove capacitor (item 20) and foam securing pad (item 19), make note of

pad fitted position.

Damaged components must be replaced. Contact Stuart Turner for

advice on replacements not supplied with kit.

Terminal box lid

Fig. 16

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Cont ...

• REASSEMBLY

Reassembly is the reverse of the disassembly instructions, with new replacement parts fitted

as required.

Note: For correct installation the capacitor must be connected, secured and positioned as

detailed (Figs. 17 & 18).

Secure terminal box lid screws to a torque of 0.8 Nm (item 22).

IMPORTANT NOTE: For correct pump rotation, ensure both blue wires are connected to the

linked capacitor terminals as shown.

• INITIAL OPERATING INSTRUCTIONS

• Consult instruction manual for commissiong instructions.

• Do not run pump dry. Allow the water to be pumped to enter the pump body thus ensuring

the seal is lubricated before switching the pump on. Failure to do this will damage the

seal.

• Carefully check pump and pipework for leaks whilst pump running and stationary before

leaving the installation unattended.

Receptacle at 45o

(approximately)

Fig. 17 Fig. 18

20 Receptacle at 45o

(approximately)

Receptacle at 45o

(approximately)

Blue wires

Black

wire

Red wire

- 10 -

Cont ...

SECTION 4 - REED SWITCH REPLACEMENT

The parts required to replace the reed switch are:

ITEM QTY ITEM QTY

13 Reed Switch Tie Wrap 1 21 Reed Switch 1

18 Strain Relief Bush 1 22 Screws (K40 x 16 mm) 4

• WIRING DIAGRAMS

Fig. Pump UK Eire

19 Flomate, MBF 12 üü

• DISASSEMBLY

• Isolate electrical supply before fitting replacement part.

• Replacing the reed switch components should only be carried out by a

competent person.

• The supply cord and internal wiring within the terminal box are routed

and secured to ensure compliance with the electrical standard

EN 60335-1. It is essential that prior to any disturbance of this internal

wiring, all cable routing and securing details are carefully noted to

ensure reassembly to the same factory pattern is always maintained.

• Remove four screws and carefully remove terminal box lid (item 22).

• Note the cable routing within the terminal box (Fig. 19).

• Slacken the two screws retaining the reed switch wires on the PCB.

• Remove the strain relief bush and reed switch cable by gripping with pliers (Fig. 20) and

pulling downwards from the terminal box.

• Remove the existing reed switch by cutting the securing tie wrap and pulling away from

the flow switch body (Fig. 20)

Fig. 19

MAIN WINDING

THERMOTRIP CAPACITOR

START WINDING

FLOWSWITCH

REED (S3)

(BLUE)

BROWN

BLACK

GREEN/YELLOW

BLUE

BROWN L

S3 S3

BLUE

LINK WIRE

MAIN WINDING

THERMOTRIP CAPACITOR

START WINDING

BLUE

BROWN

BLACK RED

GREEN/YELLOW

BLUE

BROWN L

FLOWSWITCH

REED (S3)

230 VAC/1PH/50Hz

SUPPLY 230 VAC/1PH/50Hz

SUPPLY

S3 S3

Wiring Diagram Pre-June 2016

Wiring Diagram After June 2016

Reed Switch

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