Operation - Preparation
116 DR4500A Classic Series Circular Chart Recorder With or Without Control Product Manual Release M
April 2017
5.2 Preparation
Introduction
After the DR4500A recorder is installed and configured, there are a few preparation tasks to perform prior
to start-up. These tasks include:
ï‚· installing the chart,
ï‚· setting the time line, and
ï‚· changing the chart hub, if necessary.
Refer to 48HTable 5-1 for these procedures.
In some instances, it may be necessary to:
ï‚· tune the controller portion - see Subsection 49H5.3 50HStart-up,
ï‚· align the pens electrically - see Section 9 Troubleshooting/Service,
ï‚· recalibrate the input - see Section 7 Input Calibration.
Install/replace chart
51HTable 5-1 lists the steps required to install/replace the chart. Refer to 52HFigure 5-1 and follow the procedure.
Table 5-1 Install/replace chart
Open the recorder door. Remove power if it is applied.
Pull the pen lifter up in order to raise the pen(s) from the chart.
If there is a chart already installed, remove the chart from the hub and retaining clips.
Install the new chart so that its edges are under the four retaining clips and its small alignment
hole is over the alignment pin on the hub.
ï‚· If your chart hub looks like one of these and requires a smaller hub size:
a)
Latch
Set screw
Latch
Set screw
b)
For a) unscrew the hex head set screw and open the latch. For a) and b): pull the hub off the
motor shaft. Replace with the smaller hub shown below. (Use hub from Honeywell hub kit
30756150-001.)