MP-3000a Controller
79
CRR Full Pretrip (PTI Test Procedure)
LED
Display
(Test No.)
LCD Display
(Shows Approx.
Amps for 460V,
60 Hz Unit)
Test Description
Possible
Alarms
Duration
(Time)
P1.00
Display Test
Activated
0.1A 0.0A 0.1A
Event Log for PTI begins. All alarms are turned OFF.
Alarm list is cleared. All lights and bars in display turn
ON.
None
10 Seconds
P1.01
Sensor Test
Activated
0.1A 0.0A 0.1A
All sensors must have values within their measuring
range. When CONTAINER ID begins with MAE, MSF
or MWC prefix, at least 1 USDA sensor must be
installed or USDA No. 1 OPEN alarm will be logged.
00, 01, 02,
03, 04, 05,
32, 33, 34,
35, 97, 98,
99, 109,
110, 112
10 Seconds
P1.02
Heat Test
Activated 5.2A
5.1A 5.2A
Electric heaters are turned ON. Amp draw is measured
and compared to voltage:
• 4.4 Amps approx. at 400V;
• 5.1 Amps approx. at 460V.
Heater amperes are recorded in PTI log.
10, 11
10 Seconds
P1.03
Defrost Activated
5.2A 5.1A 5.2A
If evaporator sensor is below +10 C (50 F), heat
remains on until evaporator sensor r18 C (65
F)
20
1 Hour
Maximum
P1.04
Evaporator Fan
High Activated
2.4A 2.3A 2.4A
Condenser fan and compressor are turned Off. With
evaporator fan on high speed, Amp draw is measured
and compared to voltage and frequency:
• CRR40
2.2 Amps approx. at 50 Hz,
2.6 Amps approx. at 60 Hz
Evaporator fan high speed amperes are recorded in
PTI log
12, 13
10 Seconds
P1.05
Probe Test
Activated
Evaporator fans operate on high speed for 3 minutes.
Then probe test runs until temperature difference
between sensor stops increasing. Maximum
temperature difference allowed:
• Return/Evaporator: 1.5 C (2.7 F); return air sensor
temperature must be 0.5 C (1.0 F) above
evaporator sensor temperature
• Return/Supply: 0.8 C (1.4 F); return air sensor
temperature must be 0.5 C (1.0 F) above supply
air temperature
• LH Supply/RH Supply (if equipped): 0.5C (0.9F)
52
3 Minutes
Minimum to
13 Minutes
Maximum
P1.06
Condenser Fan
Activated
0.8A 0.7A 0.8A
Condenser fan is turned ON. Amp draw is measured
and compared to voltage and frequency: 0.8 Amps
Maximum. Condenser fan amperes are recorded in PTI
log.
16, 17
10 Seconds
Summary of Contents for CRR-40 119
Page 4: ......
Page 16: ...Safety Precautions 16...
Page 18: ...Service Guide 18...
Page 20: ...Model Features 20...
Page 32: ...Specifications 32...
Page 120: ...MP 3000a Controller 120...
Page 160: ...Wiring and Schematic Diagrams Index 160...
Page 161: ...161 MPC2000 Wiring Schematic...
Page 162: ...162 MPC2000 High Voltage Wiring Diagram...
Page 163: ...163 MPC2000 Low Voltage Wiring Diagram...
Page 164: ...164 MPC2000 WCC Wiring Schematic...