Frequently asked questions (FAQ)
Q1: If JF-400 can’t startup and alert at the beginning of self-test.
Ans: It means that the friction factor is not properly used. Pease check:
(1) Whether the cleaning cloth is too dirty.
(2) Glass stickers, window film on the glass will also affect the friction factor.
(3) If clean window many times, the glass surface will become very slippery.
(4) The glass surface will become slippery if clean several times in low humidity
environment such as in air-conditioned room.
Q2: JF-400 slips and cannot detect the upper frame of window in “Auto Up then
Down”(
) mode.
Ans: Press
key and switch to
or
auto mode.
Q3: JF-400 cannot finish whole window and stop at middle area.
Ans: Press
or
auto mode to continue cleaning.
Q4: JF-400 slips and cannot get higher to the window frame.
Ans: (1) Friction factor is too low that might be caused by glass stickers, window film
on the glass.
(2) Cleaning cloth might be too wet.
(3) If clean window many times, the glass surface will become very slippery.
(4) The glass surface will become slippery if clean several times in low humidity
environment such as in air-conditioned room.
Q5: JF-400 does not move smoothly or move irregularly.
Ans: (1) Cleaning cloth is too dirty. Please change a clean-cleaning cloth.
(2) Glass surface has different friction factor areas due to stickers, window film,
and so on. Please use JF-400 in single area.
(3) The screw of cleaning wheel might be get loose, just tighten it.
Q6: After cleaning, remained circle mark on the glass surface.
Ans: Cleaning cloth is too dirty. Please change a clean-cleaning cloth and clean
again.
Summary of Contents for JF-400
Page 1: ...JF 400 Glastv tt...
