B737 cl PTU

[lunav]

Sorry but it's more difficult than I tought.
For todders:
It came to me that You can't clean the a/c using the PTU for the fact that Its operation is between flaps less than 15 and not up!!means 1 to 10!And at Flaps 1 we have a lot of things out the Leading edge!
For CaptainsandL:
Autoslats operation is between flaps 1 and 5 .From AOM:

At flap positions 1, 2 and 5 an autoslat function is available that moves the LE slats to FULL EXTEND if the airplane approaches a stall condition.
Becouse:

When the FLAP lever is moved from the UP position to the 1, 2, or 5 position, the TE flaps extend to the commanded position and the LE:
• flaps extend to the extended position, and
• slats extend to the extended (intermediate) position.
When the FLAP lever is moved beyond the 5 position the TE flaps extend to the commanded position and the LE:
• flaps remain at the extended position, and
• slats extend to the full extended position.

The LE devices sequence is reversed upon retraction.
So for sure the PTU will drive LE slats to full extended pos when moving flaps beyond 5 when conditions are met, but when will it move the LE flaps as they are already in the extended position from flap 1?
Isn't it written on AOM?:

The purpose of the PTU is to supply the additional volume of hydraulic fluid needed to operate the autoslats and leading edge flaps and slats at the normal rate when system B engine–driven hydraulic pump volume is lost.

• airborne
• system B engine–driven pump hydraulic pressure drops below limits

• flaps are less than 15 but not up.

Getting cofused here!Thanks for any help!