Sagola TB 270 Manual De Instrucciones página 17

In order to reduce the risk or serious injury, the following procedure must be observed when stopping the
system, dur ing assembly, cleaning or when produc t transfer is stopped.
Operate the air inlet pressure regulator to the pump until it is in the minimum position (turning to the left).
Close the air inlet stop cock to the pump.
Open the product outlet stop cock of the pump with a container near in order to collect the product.
If you have reason to believe the cap or the hose is completely clogged, or that the pressure has not been
totally eliminated after having followed the preocedure described above, loosen the hose connector VERY
GENTLY in order to reduce the pressure gradually, and finally remove it altogether. Clean the pump or the hose
immediately.
Do not clean or disassemble anything while the pump or accessories are pressurised.
Before disassembly, place the pump upside down to empty
out material. In this way all the material which might be
found in the manifolds will be emptied.
Replacing suction valve.
Depressurise the pump following the decompression
1
procedure.
2
Disassemble the suction tube (28) or pump from its
support.
3 Disassemble the lower suction valve assembly (No.
26 figure-1). Place the new lower valve.
4
Mount the suction hose or pump on the support.
Replacing the piston valve.
Depressurise the pump following the decompression
1
procedure.
2
Disassemble the gravity cup or the suction hose.
3 Disassemble the hydraulic cylinder (No. 23 figure-1).
ATTENTION
Do not strike the ends of the cylinders
during disassembly.
REPAIR GUIDE
WARNING
Unthread the valve (No. 22 figure-1).
4
Place the new valve (No. 22 figure-1), holding with a
5
wrench.
6 Replace the hydraulic cylinder (No. 23 figure-1).
Check the status of the cylinder
Replacing the seals on the stuffing box and piston seal.
1 Depressurise the pump following the decompression
procedure.
2
Disassemble the suction hose if any or the pump
from its support.
Disassemble the hydraulic cylinder (No. 23 figure-1).
3
Do not strike the ends of the cylinders during
4
Unthread the valve (No. 22 figure-1).
1 7
ATTENTION
before assembly.
ATTENTION
disassembly.