Clayton Steam Generator model EO-100-1
PAGE 44 / 70
Instruction Manual, doc.nr.: MAN18206 Rev A PSC
9.1.3
WATERPUMP DIAPHRAGM REPLACEMENT
9.1.3.1
Removal ( fig 8.1 )
•
Remove drain cock and drain water from pump.
•
Drain oil from cranckcase
•
Disconnect piping from pump. Unscrew hex nuts which secure pump heads to crankcase and remove
check valve housings, pump heads and stand pipes as a unit, from each side of crankcase.
•
Remove diaphragm return springs, diaphragm washers and diaphragms.
•
Replace worn or deteriorated diaphragms. Replace broken or distorted springs. Free length of springs
should be 132 mm. If not within 1 mm replace spring.
9.1.3.2
Reassembly ( fig 8.1 )
•
Position diaphragms, washers and springs to pump case and install pump heads. Tighten stud nuts as
described below. Be sure springs and diaphragm washers remain in correct position during assembly.
fig 8.3 : Torqueing sequence pump
* = starting position. Apply torque as indicated in the table, through 6cycles, using the above
sequence for tightening.
•
Fill pump crankcase with hydraulic oil to proper level
1
3
2
4
1
2
3
4
ft.lbs
N.m
ft.lbs
N.m
ft.lbs
N.m
ft.lbs
N.m
20
28
20
28
20
28
20
28
40
55
40
55
40
55
40
55
60
83
60
83
60
83
60
83
100
138
100
138
100
138
100
138
150
207
150
207
150
207
150
207
200
277
200
277
200
277
200
277
-
IMPORTANT
:
After installation, operate plant normally for at least 24 hours. Then shut down plant and
allow to completely cool. Retighten all pump head nuts while pump is cold to take up set
in diaphragms and prevent leakage.
