4-8 Key points in disassembly
4-8-1 Points of attention in maintenance
1)General attention
2)
Points of attention in usage of electric components
The part of control panel seat
Be sure to pull off the power plug in disassembly or maintenance
Use stipulated crimp terminals in connecting the wires between the
conducting wires as far as possible, and fix with suitable tools, and
insulate with insulation tape completely.
In inserting the conducting wires, be sure to plug the pins to the root
and make it hard to be pulled out.
If welding is needed, be careful not to touch the plastic or other
insulation parts with the iron.
When connecting the wires, be sure not to make the wire touch the
mobile parts like the belt, radiating pulley and jib etc., and the sharp
protruding parts and the parts with high temperature (motor). Connect
and fix the wires as per their original mode.
If there's metal object at the wire fixing point, be sure to insulate with
insulation materials.
Retain the dismantled screws for future usage in installation.
In case that the power is on, the earthing circuit of the computer
sequencer can have 120V voltage to earth. Take care not to get
electric shock.
Store the computer sequencer and driver under 4
-30
. Avoid direct
sunlight.
In trouble-shooting, it may require hot-line work. Please be extremely
1)Method of opening the control panel
A.Open the back cover. Loosen the three locking belt fixed on the
cabinet (used
in inner wiring), to loosen the inner wiring.
B.Loosen the four screws used to install the control panel seat (rear and
side).
Lift the rear upwards. Loosen the control panel seat from the inlay of
Do not lift the control panel seat by force, otherwise the safety switch
control rod may get transformed, and the jointer part of the connecting
pipe of the water level sensor may be loosened, therefore influence
the normal operation of the microswitch and water level sensor.
After opening the control panel seat, hold it with one hand or lean it on
supporter like the wall. Do not put it down.
Attention:
Service Manual
Model No: HLP21N
Issue
Rev.
-14-
