1.Check that all wiring connections are properly termi- nated to the starter.
2.Verify that the ground wire to the starter is installed prop- erly and is of sufficient size.
3.Verify that the motors are properly grounded to the starter.
4.Check that all the relays are properly seated in their sockets.
5.Verify that the proper AC input voltage is brought into the starter per the certi®ed drawings.
6.Verify that the initial factory settings (i.e., starting torque, ramp potentiometers, etc.) are set per the manufacturer's instructions.
Compressor Oil Charge Ð If oil is added, it must meet Carrier's speci®cation for centrifugal compressor use as described in the Scheduled Maintenance, Oil Speci®ca- tions section (page 77).
Oil may be added through the compressor oil drain and charging valve (Fig. 2, Item 22) using a pump. The pump must be able to lift from 0 to 150 psig (0 to 1034 kPa), or above chiller pressure. However, an oil charging elbow on the seal-oil return chamber (Fig. 4, Item 3) allows oil to be added without pumping. The seal oil return pump automati- cally transfers the oil to the main oil reservoir.
Oil should only be charged or removed when the chiller is shut down. Maximum oil level is the middle of the upper sight glass.
Power Up the Controls and Check the Com- pressor Oil Heater Ð Be sure that an oil level is vis- ible in the compressor before energizing the controls. A separate disconnect energizes the oil heater and the control circuit. When ®rst powered, the LID should display the default screen within a short period of time.
The oil heater is energized by powering the control cir- cuit. This should be done several hours before start-up to minimize oil-refrigerant dilution. The oil heater is con- trolled by the PIC and is powered through a contactor in the power panel. Starters contain a separate circuit breaker to power the heater and the control circuit. This arrangement allows the heater to energize when the main motor circuit breaker is off for service work or extended shutdowns. The oil heater relay status can be viewed on the STATUS02 screen on the LID. Oil sump temperature can be viewed on the LID default screen.
SOFTWARE VERSION Ð The software version is always labeled on the PSIO module and on the back side of the LID module. The software number also appears on both the CONTROLLER IDENTIFICATION and LID CON- FIGURATION tables. See Fig. 15.
Set Up Chiller Control Con®guration
Do not operate the chiller before the control con®gu- rations have been checked and a Control Test has been satisfactorily completed. Protection by safety controls cannot be assumed until all control con®gurations have been con®rmed.
As you con®gure the 17EX chiller, write down all con- ®guration settings. A log, such as the one shown on pages CL-1 to CL-12, is a convenient way to list con®guration values.
Input the Design Set Points Ð To modify the set
points, access the SETPOINT menu. (Press the MENU and
SETPOINT softkeys.) From this menu, you can modify the base demand limit and the leaving chilled water, entering chilled water, and ice build set points. See Fig. 15 for the SETPOINT menu structure.
The PIC can control a set point according to ether the leav- ing or entering chilled water temperature. To change the type of control, access the CONFIG screen. Scroll down to high- light ECW CONTROL OPTION. To control the set point ac-
cording to the leaving chilled water, press the DISABLE
softkey; to control the set point according to the entering
chilled water, press the ENABLE softkey.
Input the Local Occupied Schedule (OCCPC01S)
ÐTo set up the occupied time schedule according to the site requirements, access the SCHEDULE screen on the LID.
(Press the MENU and SCHEDULE softkeys.) The de-
fault, factory-set schedule is 24 hours, occupied 7 days per week including holidays. For more information about how to set up a time schedule, see the Controls section, page 11.
If the ice build option is being used, con®gure the ice build schedule (OCCPC02S).
If a CCN system is being installed or if a secondary time schedule is required, con®gure the CCN occupancy sched- ule (OCCPC03S to OCCPC99S). This task is normally done using a CCN Building Supervisor terminal, but it can also be done at the LID. For more information on CCN func- tions, see 17EX CCN supplement. Also, in this manual, see the section on Occupancy Schedule, page 32.
Input Service Con®gurations Ð The following con- ®gurations are done from the SERVICE menu:
·password
·input time and date
·LID con®guration
·controller identi®cation
·service parameters
·equipment con®guration
·automated control test
PASSWORD Ð You must enter a password whenever you access the SERVICE screens. The default, factory-set pass- word is 1 - 1 - 1 - 1. The password may be changed from the LID CONFIGURATION screen. To change the password:
1.Press the MENU and SERVICE softkeys. Enter your password and highlight LID CONFIGURATION. Press the SELECT softkey. Only the last 5 entries on the LID
CONFIGURATION screen can be changed: BUS #, ADDRESS #, BAUD RATE, US IMP/METRIC, and
PASSWORD.
2.Use the ENTER softkey to scroll to PASSWORD. The ®rst digit of the password is highlighted on the LID screen.
3.To change the digit, press the INCREASE or DECREASE softkey. When you see the digit you want,
press the ENTER softkey.
4.The next digit is highlighted. Change it and the third and fourth digits in the same way you changed the ®rst.
