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62-11637
7–62
P00196
HIGH DISCHARGE PRESSURE
• ACTIVATION: This alarm is generated during Test 4 of Cool Pretrip. Discharge pressure is higher than nor-
mal. (
“Normal” discharge pressure for systems operating in the Cool Mode can be estimated by taking the
temperature of the air entering the condenser coil (Ambient Air Temperature AAT) and adding 30 F (16.6
C) to it, then looking at a pressure temperature chart-see
for the corresponding pressure.
)
• UNIT CONTROL: Alarm Only
• RESET CONDITION: Auto reset if Pretrip is started again, or Alarm may be manually reset using the dis-
play mounted keys or by turning the unit off, then back on again.
NOTE: Follow the steps below until a problem is found. Once a repair or correction has been made, clear the
alarm(s). (Refer to Note 1 in
Section, page 7-2.) Operate the unit through the appropriate modes to see if
any active alarm occurs. Continue with the steps below as necessary.
CORRECTIVE ACTIONS:
1.
Check Wiring to CDP & CSP
a. Verify that correct wires are connected to each transducer Plugs to transducers are the same. The cor-
rect wire plug must be connected to the proper transducer. The CDP connector is identified with a red
tape band while the CSP connector is identified with a blue band.
b. Verify that correct transducer is installed in each position. Mechanical connections are the same. The
CDT should have a red dot on it while the CST has a blue dot.
2.
Check System Pressures
Install manifold gauge set and check and compare compressor discharge & suction pressures with
those shown in Unit Data. Refer to
for instruction on comparison.
3.
Check High Side Operating Conditions
Refer to procedure for alarm
. Alarm condition must be cor-
rected and the alarm cleared to continue.
Summary of Contents for Transicold X4 7300
Page 21: ...62 11637 1 6 1 3 SAFETY DECALS ...
Page 22: ...1 7 62 11637 62 03958 ...
Page 23: ...62 11637 1 8 ...
Page 24: ...1 9 62 11637 ...
Page 119: ...62 11637 SECTION 6 MESSAGECENTER PARAGRAPH NUMBER Page 6 1 MESSAGECENTER MESSAGES 6 1 ...
Page 278: ......