7-8
62-11039
Alarm
NO.
Steps
ALARM / CAUSE
CORRECTIVE ACTION
13
HIGH DISCHARGE PRESSURE (ALARM 75 WILL ACTIVATE)
•
TRIGGER–ON: Compressor discharge pressure is over 465 PSIG (31.6 Bars)
•
UNIT CONTROL: Engine operation: engine and unit shutdown and alarm. Standby operation:
refrigeration system shutdown and alarm with PSCON still energized
refrigeration system shutdown and alarm with PSCON still energized.
•
RESET CONDITION: Auto Reset after 15 minutes if the compressor discharge pressure falls below 350
PSIG (23.8 Bars), or alarm may be manually reset via keypad 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, the active alarm
should clear itself (see reset condition above). Operate the unit through the appropriate modes to see if any active
alarm occurs. Continue with the steps below as necessary.
1.
Check System Pressures
a. Install Manifold Test Set and check and
compare compressor discharge &
suction pressures with those shown on
the microprocessor controller.
Suction & Discharge Pressures must have the same
reading on gauges & on micro display.
Pressures must be in the normal range for ambient & box
temperature conditions.
NOTE: Microprocessor suction pressure reading has
a maximum value of 100 psig (7.5 bar)
2.
Check For Refrigerant Overcharge
a. Check refrigerant level in the receiver
tank.
Level must be between upper & lower sight glasses with a
box temperature of 35
°
F (1.0C) or lower
3.
Check Airflow Through Condenser Coil
a. Inspect condenser / radiator fins
Fins must be straight. 90% or more of the coil surface
must be undamaged. No “dead” air spaces. Condenser /
Radiator coil must be clean.
b. Check airflow (with unit running).
Even airflow through the entire coil
No “dead” spots
c. Check condenser fan rotation/operation
Both fans should operate correctly. Air should be directed
c. Check condenser fan rotation/operation
Both fans should operate correctly. Air should be directed
in through the grill, and into the engine compartment.
4.
Check HP1 Switch
a. Inspect switch & connector pins &
terminals
No physical damage to switch.
No damaged or corroded pins in plug.
b. Check switch operation
(Refer to Section 2.12 for pressure
settings)
Contacts open when compressor discharge pressure is
above cut-out point
±
10 PSIG (
±
0.68 Bar)
Contacts closed when compressor discharge pressure is
below cut-in point
±
10 PSIG (
±
0.68 Bar)
5.
Check HP1 Switch Harness
a. Inspect harness & control box
connector pins & terminals (See wiring
schematic)
No physical damage to harness.
No damaged or corroded pins
b. Check for shorted circuit in harness,
and continuity through the harness
Energize Circuit. (See Note 2). Battery voltage reading
(12--13 VDC) between wire HP1A--SPKS and between
HP1B to Ground.
6.
Perform Pretrip Check
a. Run Pretrip & check for alarms
Any active alarms must be corrected and cleared before
proceeding.
7.
See Refrigeration Trouble Shooting
Section 9
Discharge Pressure must be in normal range for the
current ambient and box temperature conditions.
Содержание VECTOR 1800 MT
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Страница 2: ...OPERATION SERVICE MANUAL for VECTOR 1800 MT Trailer Multi Temp Refrigeration Units ...
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Страница 20: ...1 6 62 11039 62 03958 00 Heat Warning 62 03957 01 High Voltage 62 60280 00 Standby Safety ...
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Страница 310: ...10 8 62 11039 BASED ON ENGINEERING SCHEMATIC 62 60926 REV G NEXT SHT ...
Страница 311: ...10 9 62 11039 FROM PREVIOUS SHT ...