corgi 2 port valve

[londonpuma]

hi guys,i have had a corgi 2 port zone valve fitted on my CH system about 2 years ago,bought new,link below.
my question is can i remove the acquator? on it like the honewell valves with the dimple on the cover to save me flushing the whole system.
many thanks.

http://corgicontrols.com/valves-accessories/val222mv-c/

 

[Gasguru]

http://corgicontrols.com/?ddownload=649

 

[londonpuma]

i missed that bit,cheers gasguru,but can u clarify,i turn the CH of at the boiler,then put the lever into MAN position before removing the aqucator?.
or does it not matter where the lever is when removing,ie valve open/closed.
the link only gives instructions for putting one back on,eek