Thermo King 098916, Maintenance Manual

Page: 81 / 196

Operating Instructions
80
MAGNUM Function Test
LCD Display* Description Possible
Alarms Duration
(Time)
PTI START
Activated
0.1A 0.0A 0.1A
Event Log for PTI begins.
All alarms are turned off. Alarm list is cleared.
All relays are turned off and air vent are closed. None 2 seconds
SENSOR TEST
Activated
0.1A 0.0A 0.1A
All sensors must have values within their measuring
range. 00, 01, 02,
03, 04, 05,
32, 33, 34,
35, 97, 98,
99 5 seconds
EVAP FAN LOW TEST
SUP RET EVA
5.1C 5.0C 5.1C
1.1A 1.0A 1.1A
Condenser fan and compressor are turned off. With
evaporator fan on low speed, amp draw is measured
and compared to voltage and frequency:
•
MAGNUM and MAGNUM SL:
1.0 Amps approx. at 50 Hz,
1.0 Amps approx. at 60 Hz
•
MAGNUM 20:
1.5 Amps approx. at 50 Hz,
1.5 Amps approx. at 60 Hz
Amperes are recorded in the PTI log.
14, 15 10 seconds
EVAP FAN HIGH TEST
SUP RET EVA
5.1C 5.0C 5.1C
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:
•
MAGNUM:
2.1 Amps approx. at 50 Hz,
2.5 Amps approx. at 60 Hz
•
MAGNUM SL and MAGNUM 20:
2.7 Amps approx. at 50 Hz,
3.2 Amps approx. at 60 Hz
Amperes are recorded in PTI log.
12, 13 10 seconds
AFAM+ TEST
SUP RET EVA
5.1C 5.0C 5.1C
2.4A 2.3A 2.4A
Air vent is opened and verified that the motor is
operating. Evaporator fan is started and operating until
CO2 value is below 0.5 percent or 20 minutes. 57, 68, 69 10 seconds
minimum
to
20 minutes
maximum
COND FAN TEST
SUP RET EVA
5.2C 5.0C 5.1C
1.3A 1.2A 1.3A
Condenser fan is turned on.
Amp draw is measured and compared to voltage and
frequency: 1.5 Amps at 60 Hz, 1.2 Amps at 50 Hz.
Condenser fan amperes are recorded in PTI log.
16, 17 10 seconds
REVERSE PHASE
TEST
SUP RET EVA
1.3C 1.0C 1.3C
1.3A 1.2A 1.3A
With condenser fan on, reverse phase selector relay is
energized. Condenser fan and compressor reverse
current is measured. 58 30 seconds
* Readings may vary depending on voltage and temperature