Removing The Kriwan Motor Protection Module; Installing The Coresense Communications Module; Coresense Communications Module Troubleshooting - Carrier AquaSnap 30MPA Series Controls, Start-Up, Operation, Service, And Troubleshooting

Removing the Kriwan motor protection module:

1. Disconnect and lock out the high voltage and control
voltage supply to the unit.
2. Using a straight blade screwdriver, carefully depress the
tabs holding the terminal cover to the terminal box to re-
move the terminal cover. Before proceeding, use a volt
meter to verify that the power has been disconnected
from the unit.
3. Using wire markers, label the M1, M2, T1, and T2 wires
that are connected to the Kriwan module. Using needle
nose pliers, remove the M1, M2, T1, T2, S1 and S2 wires
from the Kriwan motor protector module.
4. Gently bend the holding tabs holding the Kriwan module
in the terminal box and remove the Kriwan module from
the terminal box. See Fig. 36.
5. Take note of the S1-S2 plug orientation on the compres-
sor thermistor fusite. Remove the S1-S2 wire harness and
plug from the compressor.
HOLDING
TAB
Fig. 36 — Kriwan Motor Protection Module
Removal

Installing the CoreSense communications module:

1. A new S1-S2 thermistor wiring harness is shipped with
the CoreSense kit and must be used. The wiring harness
connector block should be fully inserted on the three pins
in the orientation shown in Fig. 37 for proper operation.
INSTALL IN THIS
ORIENTATION
Fig. 37 — Compressor Motor Sensor Harness
Installation (under motor protection module)
2. Review the DIP switch settings on the CoreSense mod-
ule. DIP switch no. 1 should be ON (up position) and all
other DIP switches should be OFF (down position). See
Fig. 38.
O
F
F
Fig. 38 — CoreSense Communication DIP
3. Install the CoreSense module in the compressor terminal
box as shown in Fig. 39, with the tabs holding the mod-
ule in place. Route the thermistor wire harness as shown
and plug the harness into the 2x2 socket on the CoreSense
module.
4. Connect the previously labeled M1, M2, T1, and T2
wires to the appropriate terminals on the CoreSense mod-
ule.
5. Connect the L1, L2, and L3 phase sensing wires to the
L1, L2, and L3 compressor terminal block connections.
See the compressor terminal cover diagram for identica-
tion of the L1, L2, and L3 terminal block connections.
6. Double-check the installation and make sure all connec-
tions are secure. Install the compressor terminal cover.
The CoreSense retrofit is complete and the system can be
HOLDING
put back into service.
TAB
a38-7310
HOLDING
BLACK
WHITE
Fig. 39 — CoreSense Communication Module

CoreSense Communications Module Troubleshooting

Copeland models with a "TE" in the electrical code (i.e.,
ZP182KCE-TED) have a motor overload system that consists
of an external CoreSense communication electronic control
module.
Motor thermistors are connected to the CoreSense commu-
nication module via a 2x2 plug (Fig. 40).
A38-7311
FOR FUTURE
56
1 2 3 4 5 6
ON
OFF OFF OFF OFF OFF
ROCKER DOWN
Switch Settings for Kriwan Retrofit
RED
BLACK
WHITE
TAB
BLUE
VIOLET
Mounting
MOTOR
PTC
CIRCUIT
USE
Fig. 40 — CoreSense Communications
Motor Thermistor Plug
7 8 9 10
OFF
OFF OFF OFF
A38-7812
THERMISTOR WIRE
HARNESS PLUGGED
INTO 2X2 SOCKET
A38-7313
HOLDING
TAB
—
SCROLL
NTC CIRCUIT
(NOT USED)
COMMON
CONNECTION
a38-7308