5
Operation and Maintenance
Do not operate the unit with associated
equipment touching any part of the unit.
To start the feeder after all connections have been
made, apply power to the line connected to the
feeder. If a controller is used, operate the switch
on the controller and adjust the output voltage to
maximum by rotating the control knob to the full
clockwise position. Usually (at ordinary room
temperatures) the unit will take about two minutes
to reach full steady-state displacement.
After full steady-state displacement has been
attained, use the controller to adjust the unit to the
desired feed rate.
No routine maintenance or lubrication is required,
except that any accumulation of foreign matter
should be periodically removed from between the
tray-tiebar assembly and the body, and from between
the body and the mounting surface, to prevent
restriction of movement of the vibratory elements.
IMPORTANT NOTE:
Special Trays and Attachments
Eriez engineering service should always be con-
sulted before undertaking the design or construc-
tion of special trays. Do not modify either standard
or special trays as furnished by Eriez, or make at-
tachments to these trays without first consulting us.
Unauthorized modifications will void the warranty.
(See Standard Tray Specifications.)
TUNING GUIDE
General Information
The tuning means is provided solely for the purpose
of mechanically tuning the unit, with its tray, to the
desired vibratory displacement at full voltage. HS-5
drive units supplied without trays are tuned by Eriez
for use with a three-pound (1.36 kg) weight. If
supplied with a tray, they are tuned for that specific
tray and should require no further adjustment.
However, if different trays or other components of a
system are used, or if a striking condition occurs, a
tuning adjustment of the air gap – the space between
the two plungers – should be made using the
following procedures.
In normal operation at full voltage, the total
displacement for standard size trays, measured
at the back of the tray, is .110" to .120" (2.8 mm
to 3.0 mm). For trays substantially larger than
standard this normal displacement range should
be reduced. Refer to the serial number plate on
your feeder for the amplitude that your unit was
tuned for.
How to Measure Displacement
Position an Eriez displacement sticker on the outer
side of the tray, near the rear of the tray and at an
angle of 25
°
from vertical (see Figure 2).
With unit operating observe where the fine gray
lines on the displacement sticker meet. This point
will be higher or lower as the displacement
changes. Opposite the point where they meet,
read amount of displacement
FIGURE 2
DISPLACEMENT STICKER