Section 1 - Mechanical Seal Replacement - Stuart Turner MONSOON EXTRA S1.4 bar SINGLE Installation Instructions Manual

SECTION 1 - MECHANICAL SEAL REPLACEMENT

The parts required to replace the seal are:
ITEM
1 Thrower Washer
2 'O'-Ring
(ID 6.07 mm)
3 'O'-Ring
(ID 101.4 mm)
4 Seal Counterface
5 Rotary Seal Assembly
6 Plastic Spacer
•
SEAL IDENTIFICATION
For certain pump variants your seal arrangements may be different from that supplied within the
service kit.
The seal as supplied is an alternative and is shown in order of assembly in Fig 4.
A
Fig. 4
•
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.
Fig. 5
Fig. 7
•
INITIAL OPERATING 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.
B C D
Fig. 6
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 seal
bellows assembly (Fig. 6).
3 The spacer (item C) and washer (item D) can then be placed on the shaft and whole
assembly located into position by screwing the impeller to its stop. The impeller
locknut should then be secured (Fig. 7).
QTY ITEM
1 7 Stainless Washer
2 8 M8 Locknut
1 9 'O'-Ring
1 12 Applicator Tool
1 27 Screws
1 28 Screws
A Seal seat complete with rubber cup washer.
B Rotary seal assembly.
C Spacer.
D Stainless steel washer.
- 3 -
(ID 8 mm)
(not shown)
(M6 x 35 mm)
(M6 x 16 mm)
Applicator Tool (Item 12)
Side 2
QTY
2
1
1
1
2
4
Side 1
Cont ...