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MDE-4334C Atlas Start-up and Service Manual · April 2008
Electronic and Electrical Components
Atlas 8800 Parts
The ATC PCA T20569 records the temperature-related input from the T-meter Module
Hydraulic Interface PCA, which then modifies the pulser-count to regulate the temperature
change. The adjusted pulser-count is supplied to the Pump Controller PCA. Components for
the firmware are located near the center of the board at U5 and U11, which also contains the
battery-backed RAM. The PCA re5 VDC from the Pump Controller PCA and 14.5
VDC from the pump interface PCA. The ATC T20569 PCA also receives data from the
Manager Keypad before the Pump Controller PCA, which allows information to be entered
through the keypad for programming and testing purposes when the ATC is used.
T20569 ATC PCA Connections and Cables
Connector #
via Cable
to Assembly
at Connector #
P204A
T17768-G1
T17701-G1
P801 (34) (Side A)
(2 places) and
(Side B) (2 places)
P301
M02739A001
T20092-G1
P205 (16)
P207 (10)
T18994-G1
P307 (10)
P305 (16)
P303
R20146-G1
T20092-G1
P203 (10)
P303A
R19951-G1
T17549-G1
P901A (10)
P304
R19667-G1
T20092-G1
P204 (34)
P305
M02739A001
T20092-G1
P205 (16)
P207 (10)
T18994-G1
P307 (10)
P305 (16)
P307
R20128-G1
Main Junction Box (24 AWG WHT)
WT-4 and WT-3
P405
M02739A001
T20092-G1
P205 (16)
P207 (10)
T18994-G1
P307 (10)
P305 (16)
P415
N/A
N/A
N/A
Switch
P308
Position
S1
On
Off
T19405-G3 ATC T-meter Module PCA (Atlas 8800 only)
shows the hydraulic interface that contains assemblies and
components related to customer information on PCA T20092-G1. The ATC T-meter Module
PCA T19405-G3 (optional) interface PCA modifies the pulser-count to account for the
ambient temperature change. The adjusted pulser-count is supplied to the Pump Controller
PCA.