62-11637
7–4
00011
LOW ENGINE OIL PRESSURE
NOTE
This alarm may be activated if too high a viscosity oil is used in cold ambient.
• ACTIVATION: The ENCU circuit is energized (3MM
−
9) and engine oil pressure is below 12 psig (0.82 bar)
for longer than 5 seconds while the engine is running.
• UNIT CONTROL: Shutdown and alarm.
• RESET CONDITION: Auto reset or alarm may be manually reset using the display mounted keys or by turn-
ing 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 active
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.
CORRECTIVE ACTIONS:
1.
Check
Engine Oil Level
Check engine oil dipstick. Add engine oil as needed to fill.
2.
Check
Engine Oil Pressure Switch (ENOPS) Power & Wiring
a. Inspect switch, connector pins & terminals. Verify that there is no physical damage to the switch.
Check the connections for damage and corrosion.
b. Using Component Test Mode, energize the ENCU Power Circuit. Check for power at the switch con-
nector. Must have minimum 11 VDC. If not, check the connectors and wiring between terminals for
damage, moisture or corrosion.
c. Check for continuity from switch connector terminal A to ENCU
−
15. If good continuity is not present,
check connectors and wiring between terminals for damage, moisture or corrosion.
d. Check for continuity from switch connector terminal B to ENCU
−
18. If good continuity is not present,
check connectors and wiring between terminals for damage, moisture or corrosion.
3.
Check
ENOPS Switch
Remove switch, connect to an external pressure source and test. Contacts close on a pressure rise at
15 psig (1.02 bar). Contacts open on a pressure fall at 12 psig (0.82 bar).
4.
Check
Engine Oil Pressure
Connect mechanical oil gauge. Oil pressure must be greater than 15 psig (1.02 bar.).
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: ......