Parr Instrument CAL 9500P User Manual

Parr Instrument Sensors

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NO. 569M

Installation Instructions for a CAL 9500P Temperature

Controller into an Existing 4840 Controller

1. Unplug the power cord from the controller.

Remove the two screws from the back side of

the controller (at the top corners). (See Figure 1)

2. Lift the top cover which is hinged at the

bottom front of the case; the assembly will open

like a book. (See Figure 2)

3. Disconnect all wire connections from the

existing Watlow Temperature Control module.

Remove the green wire from this set of wires,

and discard the black jumper wire.

4. Cut off the spade connectors from the

remaining wires and strip each one to expose

0.25” of wire.

5. Locate the black wire which is currently not

connected to anything, and trace it to terminal

block location 10. Disconnect it from terminal

block location 10, and attach it to terminal block

location 4. (See Figure 3)

6. Locate the white wire which is currently not

connected to anything, and trace it to terminal

block location 9. Disconnect it from terminal

block location 9, and attach it to terminal block

location 3. (See Figure 3)

7. Remove the Watlow temperature controller

from the front panel of the 4840 Controller.

8. Install the adapter plate to the front panel of

the 4840 temperature controller using the screws

provided.

9. Install the Cal 9500P temperature controller

into the adapter plate in the front panel of the

4840 Controller using the plastic retaining cage.

From the front side, the three buttons on the

colored backing should be at the bottom, not the

top. Check the orientation!

Top screw at corner

Figure 1

4840 with cover open

Figure 2

Tip: The wire will come out easily after inserting a small

flathead screwdriver into the release port.

If there is more than one black wire on terminal block 10,

locate the one which is currently not attached to anything.

Figure 3

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