Idiomas disponibles
Idiomas disponibles
Installation instructions for replacing the hydro-multi-layer diaphragm on HP4
WARNING
Warning of dangerous or unknown feed chemical
Should a dangerous or unknown feed chemical be used: It may escape from the hydraulic components when
working on the pump.
- Take appropriate protective measures before working on the pump (e.g. safety glasses, safety gloves, ...).
Observe the safety data sheet for the feed chemical.
- Drain and fl ush the liquid end before working on the pump.
WARNING
Risk of fi ngers being crushed
Under unfavourable conditions, the stroke axle or displacement body can cause crushing of the fi ngers.
- Disconnect the pump from the mains power supply and ensure that it cannot be switched on again by unau thor-
ised persons.
WARNING
Risk of injury from the fan impeller
The fan impeller beneath motor's fan cowling can cause severe injuries while it is turning.
- The pump must only be connected to the mains voltage with the fan cowling closed.
WARNING
Hot oil and hot components
The hydraulic oil and the hydraulic end may become very hot when the pump is exposed to heavy loading.
- Allow the pump to cool before starting work.
WARNING
Warning of feed chemical spraying around
Feed chemical can spray out of the hydraulic components if they are manipulated or opened due to pressure in the
liquid end and adjacent parts of the system.
- Disconnect the pump from the mains power supply and ensure that it cannot be switched on again by unau thor-
ised persons.
- Depressurise the system before commencing any work on hydraulic parts.
For the double-head versions, perform the following work simultaneously on both dosing heads.
Drain the hydraulic oil from the hydraulic end
Turn the stroke adjustment dial by more than "100%" to the stop.
Remove the vent screw.
Place an oil trough under the hydraulic end.
Unscrew the oil drainage stopper out of the hydraulic end.
Allow the hydraulic oil to run out of the hydraulic end.
Screw in the oil drainage stopper with a new seal.
Replacing the diaphragm
Depressurise the suction and discharge lines.
Unscrew the suction and discharge lines from the liquid end.
Is the hydraulic oil drained - see above?
Remove the liquid end with the dosing head screws from the hydraulic end.
Release the diaphragm mounting plate (2) with diaphragm (1) from the dosing head.
Place the mounting plate (8) with the depressed side down against the spring collar (5).
WARNING of injury to eyes
The very strong spring (3) and the spring collar (5) on the diaphragm anchor (6) may spring away when loosening
the safety collar (4).
- To remove use the mounting aid (8)!
- Wear safety glasses.
