Carrier 19EF Series, Руководство по запуску и эксплуатации

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Oil Charge —
If oil is added, it must meet Carrier’s speci-
fication for centrifugal compressor usage as described in the
Oil Specification section on page 51. Charge the oil through
the oil charging valve, located near the bottom of the trans-
mission housing (Fig. 2). The oil must be pumped from the
oil container through the charging valve due to higher re-
frigerant pressure. The pumping device must be able to lift
from 0 to 150 psig (0 to 1034 kPa) or above unit pressure.
Oil should only be charged or removed when the machine is
shut down.
Power Up the Controls and Check the Oil Heater
—
Ensure that an oil level is visible in the compressor be-
fore energizing controls. A circuit breaker in the starter en-
ergizes the oil heater and the control circuit. When first pow-
ered, 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 migration. 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 set up 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 table on the LID.
Oil sump temperature can be viewed on the LID default screen.
SOFTWARE VERSION — The software version will al-
ways be labeled on the PSIO module, and on the back side
of the LID module. On both the Controller ID and LID ID
display screens, the software version number will also
appear.
Set Up Machine Control Configuration
Do not operate the machine before the control configu-
rations have been checked and a Control Test has been
satisfactorily completed. Protection by safety controls
cannot be assumed until all control configurations have
been confirmed.
As configuration of the 19EF unit is performed, write down
all configuration settings. A log, such as the one shown on
pages CL-1 to CL-12, provides a convenient list for con-
figuration values.
Input the Design Set Points —
Access the LID set
point screen and view/modify the base demand limit set point,
and either the LCW set point or the ECW set point. The PIC
can control a set point to either the leaving or entering chilled
water. This control method is set in the Equipment Configu-
ration table, Config table.
Input the Local Occupied Schedule (OCCPC01S)
—
Access the schedule OCCPC01S screen on the LID to
set up the occupied time schedule. If no schedule is avail-
able, the default is factory set for 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 8.
The CCN Occupied Schedule (OCCPC03S) should be con-
figured if a CCN system is being installed or if a secondary
time schedule is required. It is normally input through the
CCN Building Supervisor, but it can be configured at the
LID.
The Ice Build Schedule (OCCPC02S) should be config-
ured for ice build applications.
Input Service Configurations —
The following con-
figurations require the LID screen to be in the Service por-
tion of the menu.
• password
• input time and date
• LID configuration
• controller identification
• service parameters
• equipment configuration
• automated control test
PASSWORD — When accessing the Service tables, a pass-
word must be entered. All LIDs are initially set for a pass-
word of 1-1-1-1. This password may be changed in the LID
configuration screen, if desired.
INPUT TIME AND DATE — Access the Time and Date
table on the Service menu. Input the present time of day,
date, and day of the week. ‘‘Holiday Today’’ should only be
configured to ‘‘Yes’’ if the present day is a holiday.
CHANGE LID CONFIGURATION IF NECESSARY — The
LID Configuration screen is used to view or modify the LID
address, change to English or SI units, and to change the
password. If there is more than one machine at the jobsite,
change the LID address on each machine so that each ma-
chine has its own address. Note and record the new address.
Change the screen to SI units as required, and change the
password if desired. A copy of the password should be ob-
tained for future reference.
MODIFY CONTROLLER IDENTIFICATION IF NECES-
SARY — The controller identification screen is used to change
the PSIO module address. Change this address for each ma-
chine if there is more than one machine at the job-
site. Write the new address on the PSIO module for future
reference.
INPUT EQUIPMENT SERVICE PARAMETERS IF NEC-
ESSARY — The Equipment Service table has three service
tables: Service1, Service2, and Service3.
Configure SERVICE1 Table — Access Service1 table to
modify/view the following to jobsite parameters:
Chilled Medium Water or Brine?
Brine Refrigerant Trippoint Usually 3° F (1.7° C) below design
refrigerant temperature
Surge Limiting or
Hot Gas Bypass Option Is HGBP installed?
Minimum Load Points
(T1/P1)
Per job data — See Modify Min/Max
Load Points section
(shown below)
Maximum Load Points
(T2/P2)
Per job data — See Modify Min/Max
Load Points section
(shown below)
Motor Rated Load Amps Per job data
Motor Rated Line Voltage Per job data
Motor Rated Line kW Per job data (if kW meter installed)
Line Frequency 50 or 60 Hz
Compressor Starter Type Reduced voltage or full?
NOTE: Other values are left at the default values. These may be changed
by the operator as required. Service2 and Service3 tables can be modi-
fied by the owner/operator as required.
Modify Minimum and Maximum Load Points (
D
T1/P1;
D
T2/P2) If Necessary — These pairs of machine load points,
located on the Service1 table, determine when to limit guide
vane travel or to open the hot gas bypass valve when surge
prevention is needed. These points should be set based on
individual machine operating conditions.
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