Installation Of New Psio Module; 17/19Ex Physical Data And Wiring Schematics - Carrier 17 Start Up & Operation Manual

SWITCH SETTING OPTIONS MODULE 1
S1
S2
Fig. 53 — Options Module
Electrical shock can cause personal injury. Disconnect
all electrical power before servicing.

INSTALLATION OF NEW PSIO MODULE

1. Verify if the existing PSIO module is defective, by us-
ing the procedure described in the Notes on Module Op-
eration section, page 95, and Control Modules section,
page 95. Do not select the Attach to Network Device
table if the LID displays communication failure.
2. Data regarding the PSIO configuration should have been
recorded and saved. This data will have to be reconfig-
ured into the LID. If this data is not available, follow
the procedures described in the Set Up Machine Control
Configuration section. Record the TOTAL COMPRES-
SOR STARTS and the COMPRESSOR ONTIME from
the STATUS01 table on the LID.
If a CCN Building Supervisor or Service Tool is present,
the module configuration should have already been up-
loaded into memory; then, when the new module is in-
stalled, the configuration can be downloaded from the
computer (if the software version is the same).
Any communication wires from other machines or CCN
modules must be disconnected.
3. Check that all power to the unit is off. Carefully dis-
connect all wires from the defective module by unplug-
ging the 6 connectors. It is not necessary to remove any
of the individual wires from the connectors.
OPTIONS MODULE 2
6 7
4 2
4. Remove defective PSIO by removing its mounting screw
with a long-shaft Phillips screwdriver, and removing the
module from the control box. Save the screw for later
use. The green ground wire is held in place with the mod-
ule mounting screw.
5. Package the defective module in the carton of the new
module for return to Carrier.
6. Restore control system power (LID will show ''COM-
MUNICATION FAILURE'' at bottom of screen).
7. Access the SERVICE menu. Highlight and select
''ATTACH TO NETWORK DEVICE.'' Push the
''ATTACH'' softkey. (The LID will show ''UPLOAD-
ING TABLES. PLEASE WAIT,'' then show ''COM-
MUNICATION FAILURE.'') Press the EXIT softkey.
8. Turn off control power.
9. Mount the new module in the unit control box using a
long-shaft Phillips screwdriver and the screw saved in
Step 4 above. Make sure that the green grounding wire
is reinstalled along with the mounting screw.
10. Connect the LID communication wires (CCN bus) and
the power wires. If CCN wiring has been attached to the
CCN bus, disconnect the wires. Attach the sensor bus
plug and the input and output plugs.
11. Carefully check all wiring connections before restoring
power.
12. Restore control power and verify that the red and green
LEDs on the PSIO are functioning properly.
13. The LID should indicate ''AVAILABLE MEMORY'' and
a value. This value should start to decrease. (If not, check
LID wiring to PSIO, ensure connection to the proper
plug.) The bottom of the screen will indicate ''UP-
LOADING TABLES, PLEASE WAIT.''
14. After the PSIO tables have been uploaded into the LID,
access the STATUS01 screen. Move the highlight bar to
the ''TOTAL COMPRESSOR STARTS'' value. Select
this value and increase the value until it is the same as
the value from the old module. Press ENTER to save
this value.
15. Move the highlight bar to the ''COMPRESSOR
ONTIME'' value. Select this point and increase the value
until it matches the old module run hours. Press SE-
LECT to save this value.
16. Change the address of the PSIO in the Controller Iden-
tification table back to the previous value. Write the ad-
dress on the PSIO.
17. Use the configuration sheets to input setpoint, configu-
ration, and schedule information into the PSIO. The Time
and Date table also must be set. A Building Supervisor
can be used to download, the old configuration into the
PSIO.
18. Perform a Control Test and verify all tests.
If the software version has been updated, a CCN down-
load of the configuration will not be allowed. Configure
the PSIO by hand, and upload the PSIO into the net-
work by using the Attach to Network Device table.
19. Restore chiller to normal operation, calibrate motor amps.
17/19EX PHYSICAL DATA AND WIRING
SCHEMATICS
Tables 10-18 and Fig. 54-62 provide additional informa-
tion regarding compressor fits and clearances, physical and
electrical data, and wiring schematics for operator conve-
nience during troubleshooting.
97