Prokit's Industries SS-820B - Manual (Page 4)

SAFETY PRECAUTIONS
To prevent fire hazards, please observe the following:
Never block the vents on the device. Keep the vents free from lint, hair and other
materials.
Do not place the device on a soft surface, such as a bed or a couch, where the vents
could be blocked.
Observe the other warnings in the previous section.
Other observations:
Do not operate the product without filling the tank with water. Running dry will damage
the unit.
Do not plug in the power cord before adding water to the tank. Do not fill the tank above
the Max line to avoid overspill.
Do not use solution containing abrasive substances or strong corrosive chemical solution
not recommended by the manufacturer or the supplier.
Place the device on a dry and flat surface for operation.
When the device is subjected to severe electromagnetic interference, it may malfunction,
stop operating or lose control functions. If this happens, unplug the power cord then
reinsert it to restart the device.
Items Not Suitable For Ultrasonic Cleaning
2
Soft Jewelry:
Pearls, emerald, ivory, coral, agate,
sea turtle shells, etc
Welded, Plated and Glued Items:
Welded or plated metal items, glued
items
Watches:
Except diver's watches with depth
rating over 50 m (150 ft) .
Others:
Glass, ceramic, camera filters with
preexisting cracks.
These items are not hard, so scratches may occur
during cleaning.
Ultrasonic cleaning may increase the gaps inside
the welded joints, plated coating or glued items
and may cause separation.
Because the strong penetration capability of the
ultrasonic waves, water may get into the watches
if they are not truly waterproof. Use the watch
stand we supply as a precaution.
Ultrasonic cleaning may increase the cracks
pre-existed in the coating on the glasses, ceramic,
and glass. If the items have no pre-existing cracks,
then it is okay.