Check Starter; Mechanical-Type Starters; Solid-State Starters - Carrier 19EF Series Start Up & Operation Manual

To attach the CCN communication bus wiring, refer to
the certified drawings and wiring diagrams. The wire is in-
serted into the CCN communications plug (COMM1) on the
PSIO module. This plug also is referred to as J5.
NOTE: Conductors and drain wire must be 20 AWG
(American Wire Gage) minimum stranded, tinned copper. In-
dividual conductors must be insulated with PVC, PVC/
nylon, vinyl, Teflon, or polyethylene. An aluminum/polyester
100% foil shield and an outer jacket of PVC, PVC/nylon,
chrome vinyl or Teflon with a minimum operating tempera-
ture range of –20 C to 60 C is required. See table below for
cables that meet the requirements.
MANUFACTURER
Alpha
American
Belden
Columbia
When connecting the CCN communication bus to a sys-
tem element, a color code system for the entire network is
recommended to simplify installation and checkout. The fol-
lowing color code is recommended:
CCN BUS
SIGNAL
CONDUCTOR
TYPE
INSULATION COLOR
+ RED
Ground WHITE
− BLACK

Check Starter

BE AWARE that certain automatic start arrangements
can engage the starter. Open the disconnect ahead of
the starter in addition to shutting off the machine or pump.
Use the instruction and service manual supplied by the
starter manufacturer to verify that the starter has been in-
stalled correctly.
The main disconnect on the starter front panel may not
deenergize all internal circuits. Open all internal and re-
mote disconnects before servicing the starter.
Whenever a starter safety trip device activates, wait at least
30 seconds before resetting the safety. The microprocessor
maintains its output to the 1CR relay for 10 seconds after
starter safety shutdown to determine the fault mode of
failure.
CABLE NO.
2413 or 5463
A22503
8772
02525
PSIO MODULE
COMM 1 PLUG
(J5) PIN NO.
1
2
3
41

MECHANICAL-TYPE STARTERS

1. Check all field wiring connections for tightness, clear-
ance from moving parts, and correct connection.
2. Check the contactor(s) to be sure they move freely. Check
the mechanical interlock between contactors to ensure that
1S and 2M contactors cannot be closed at the same time.
Check all other electro-mechanical devices, e.g., relays,
timers, for free movement. If the devices do not move
freely, contact the starter manufacturer for replacement
components.
3. Some dashpot-type magnetic overload relays must be filled
with oil on the job site. If the starter is equipped with
devices of this type, remove the fluid cups from these mag-
netic overload relays. Add dashpot oil to cups per in-
structions supplied with the starter. The oil is usually shipped
in a small container attached to the starter frame near the
relays. Use only dashpot oil supplied with the starter. Do
not substitute.
Factory-filled dashpot overload relays need no oil at start-up
and solid-state overload relays do not have oil.
4. Reapply starter control power (not main chiller power) to
check electrical functions. When using a reduced-voltage
starter (such as a wye-delta type) check the transition timer
for proper setting. The factory setting is 30 seconds
(±5 seconds), timed closing. The timer is adjustable in a
range between 0 and 60 seconds and settings other than
the nominal 30 seconds may be chosen as needed (typi-
cally 20 to 30 seconds are used).
When the timer has been set, check that the starter (with
relay 1CR closed) goes through a complete and proper
start cycle.
SOLID-STATE STARTER
This equipment is at line voltage when AC power is con-
nected. Pressing the Stop button does not remove volt-
age. Use caution when adjusting the potentiometers on
the equipment.
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 of the relays are properly seated in their
sockets.
5. Verify that the proper ac input voltage is brought into the
starter per the certified drawings.
6. Verify the initial factory settings (i.e., starting torque, ramp
potentiometers, etc. are set per the manufacturer's in-
structions.