© Zakład Automatyki Przemysłowej B. P.
8
o
Shorting
: Signals the occurring of a short circuit and retracting of the electrode,
in the automatic mode.
o
Dielectric level
: Signals low level of dielectric.
o
Dielectric temperature
: Signals the excessive temperature of dielectric.
o
Fire extinguisher
: Signals activates the fire extinguisher GG-1,
o
Heatsink temperature
: Signals the excessive temperature of current oscillator,
o
Fire extinguisher supply
:
Signals the operation of a power supply unit for the
fire extinguisher GG-1,
o
Power network
: Signals the presence of 230V mains voltage,
o
No phase
: Signals lack of phase.
17) The PP15 controller
8. REMARKS CONCERNIG OPERATION
a) Prior to commencing work, level the foundation with the cast-iron table.
b) All non-varnished metal components must be protected against corrosion (lubricated
with oil).
c) The stepper motors used as drives work in the open feedback loop circuit. If motors
working in that circuit are overloaded, it may result in measuring errors.
d) Make sure that screws are clean and lubricated, and that drives corresponding to
each of the axes work properly in full scale, prior to each operation, and particularly
after downtime. If any irregularities are found, lubricate screws with molybdenum
grease and repeat the action described above.
e) Results displayed in readers must be treated as rough data. If it is necessary to
obtain highly accurate data, use precise measuring equipment, e.g. measurement
strips.
f) Drilling results displayed on a reader are erroneous, which results from gap
enlargement (parameter S
b
) and electrode wear (function f(Z
e
)). Therefore, when
setting the depth of drilling, start with the following calculation, based on
characteristics:
DIMENSION
entered
= DIMENSION
required
- S
b
+ f(Z
e
)
g) Prevent petroleum from soiling and make sure that the filter is not contaminated
excessively. To that end, carry out period cleaning of the tank:
o
pump out the maximum possible quantity of petroleum to a separate container,
o
dry the tank, remove the lid, and disconnect the discharge line,
o
pour out the remaining old petroleum, remove silt, and clean the tank,
o
re-install and push the tank to its original location,
o
when pouring clean or settled petroleum into the tank, make sure that the
drain hole is unplugged.
Attention!!!
It is not allowed to start and operate the machine, if its guards are open, or limiting switches
locked.
9. GENERAL SAFETY PRECAUTIONS
a) Only people that underwent appropriate training in the operation of the EDM machine
are allowed to work with it.
b) The operator should wear loose clothes, without any elements that could be trapped
mechanically in the machine.
c) The workpiece must be fastened to the table
–
it is not allowed to machine the piece,
if it is held in hand.
d) It is absolutely required to:
o
keep the place clean and tidy!
