Doc -030 Hatch comfort C1 User manual
Revised on 15/06/2021
When problems occur, please refer to troubleshooting as shown below.
If problems persist or observe problems other than described herein, stop the operation, close the
AIR / WATER shut-off valves and contact a local distributor.
Problems
Possible reasons
Troubleshooting
Remark
Dental chair
unit
cannot be powered
ON.
1) Circuit breaker is activated
1) Release circuit breaker
2) Fuses are blown out.
2) Replace fuses
Refer to
9.1
Seat or backrest does
not move.
1) Emergency stop function is triggered
1) Remove obstacles and
operate it again
2) Electrical noise provisionally
2) Turn off and turn on main
switch
Switches in panel and
instruments do not
work.
1) Electrical noise provisionally
1) Turn off and turn on main
switch
Micromotor does not
rotate.
1) Main transformer fuses are blown
out
1) Replace fuses
Refer to
9.2
Scaler does not work.
1) Scaler PCB fuse is blown out
1) Replace fuse inside of
dentist table
EMS : 2.5A
LM : 1.0A
HVE or saliva ejector
does not work or work
very weakly
1) Too much particles accumulated in
suction filter
1) Clean suction filter
Refer to
10.1.4
2) Suction filter cap is unseated
2) Put cap in the right
position
3) Gap occurs in the connection part
between suction filter and drainage
line
3) Tighten the connection
part firmly
4) Gap occurs in the connection part
between unit and HVE/ejector
tubings
4) Tighten the connection
part firmly
Drainage from
spittoon bowl is not
good.
1) Too much particles accumulated in
spittoon trap or drain trap filter
1) Clean spittoon trap or
drain trap filters
Refer to
10.1.5, 10.2.1
11. Before claiming service
