Digi DS-470, Operation Manual

Page: 24 / 34

21
7.0. MAINTENANCE, CALIBRATION, TEST PROCEDURE & SERVICE
This section contains information and instructions concerning maintenance of the
DS-470 check weighing scale.
Preventive maintenance consists of periodically cleaning the external surfaces of
the instrument and should be performed as often as operating conditions warrant.
The calibration procedure is designed to be an aid in maintaining the scale accuracy
within specifications. The calibration procedure may also serve as a performance
test procedure.
CAUTION: DO NOT ATTEMPT ANY SERVICE WHILE THE INSTRUMENT IS
CONNECTED TO THE POWER LINES.
7.1. Maintenance Procedures
7.1.1. Exterior Maintenance
The exterior surfaces of the counting scale can be easily cleaned using
soap and water. However, extreme caution should be used so that there is
no possibility of water penetration into the scale electrical or mechanical
sections. A damp cloth or sponge is suggested. NEVER USE ACETONE,
MEK, OR SIMILAR SOLVENTS ON THE PLASTIC HOUSING AS THEY
WILL ETCH THESE SURFACES.
For grease or other difficult spots, a chlorothane or naptha based cleaner
may be used. Never use any solvents on the front or rear panels.
Accumulations of dust or direct particles between the pins of the
connectors may be removed by using dry forced air or a small dry brush.
7.1.2. Internal Maintenance
Internal maintenance is not normally required and if it is, should not be
attempted except by a qualified, authorized service technician.
7.1.3. Calibration
The following procedure should be followed periodically (every six to
twelve months is suggested) to determine that the scale is functioning in all
modes.
a. Electrical
Follow section 4.0 through all its steps
All manuals and user guides at all-guides.com