Minster IOI, Руководство по обслуживанию

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AIR PRESSURE SWITCHES
Regulations require automatic deactivation of the
clutch control in the event of counterbalance or
clutch/brake air supply failure. Pressure switches
installed downstream from these components (con-
nected so as to deactivate the main drive motor when
insufficient air pressure is detected) is a method of
meeting that requirement.
The pressure switches for the clutch/brake and coun-
terbalance cylinder (if provided) are grouped on a elec-
trical box in the rear cavity of the press so that air
pressure used to actuate the controlled device can be
monitored. The purpose of these pressure switches is
to prevent starting of the main drive motor if the pres-
sure applied to the pressure switch does not meet or
exceed a preset minimum. The counterbalance pres-
sure switch is factory preset at 20 psi (1.4 Bar). The
clutch pressure switch is preset at 35 psi (2.4 Bar). The
preset values for these switches should NOT be
changed.
A pressure switch is included in the flywheel brake
assembly. It is located on the flywheel brake base plate
which is mounted on the rear of the press. The purpose
of this pressure switch is to prevent starting of the main
drive motor if the flywheel brake is engaged. The fly-
wheel brake pressure switch is factory preset at 20 psi
(1.4 Bar) and should NOT be changed.
Include a check of the pressure switches once a month.
Replace a worn or improperly operating pressure
switch with a new unit.
AIR LINE LUBRICATORS
An air line lubricator is used to supply a fine spray of
lubricant to the clutch solenoid air valve. An additional
lubricator is supplied if the press is equipped with
motorized slide adjustment. A mist of rust-inhibited,
light turbine oil should be carried by the flow of air into
the solenoid valve (and slide adjust motor, if provided)
to help keep it working freely and to prevent corrosive
action of moisture that was not trapped by the air filter.
On Model 101 OBI/OBS Series presses, the air line
lubricator for the clutch solenoid air valve is normally
mounted on the clutch cover. (See Figure 4E.) The
lubricator for the slide adjust motor is normally mount-
ed on the right-hand side of the press. (See Figure 5E.)
An arrow is included on the body of the lubricator to
show the direction that air must flow through it. If the
unit is removed from the press, for any reason, make
certain that it is reinstalled with the arrow pointing in the
direction of air flow.
To Fill The Air Line Lubricators:
1. Turn OFF the air supply to the press by closing the
air lockout valve.
2. Exhaust air pressure in the line connected to the air
line lubricator.
3. Unused oil may be drained from the unit, if neces-
sary, by opening the drain cock at the bottom of the
lubricator bowl. Collect oil in a suitable container and
dispose of it in accordance with local government
waste disposal guidelines.
4. Remove the fill plug from the lubricator.
5. Make certain that the drain cock is fully closed.
Then fill the lubricator to the line on the bowl with an
approved lubricant meeting the specifications of
Minster Lubricant No. 3. (Refer to “General Lubri-
cation Specifications For MINSTER Presses,” Man-
ual No. 507, for recommended lubricants and
suppliers.) Do not over fill.
E - 5
Air Line Lubricator
Solenoid Air Valve
Figure 4E. Clutch/brake air components.
Slide Adjust
Motor
Air Line Lubricator
Figure 5E. Slide adjust components.