Thermo King 098203, Maintenance Manual

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92
EVAP FAN HIGH
SPEED TEST
SUP RET EVA
5.1C 5.0C 5.1C
2.4A 2.3A 2.4A
With evaporator fan on high
speed, amp draw is measured
and compared to the expected
amp draw, in respect to voltage
and frequency. If the minimum
phase amp draw is less than
70% of the maximal amp draw
both alarm is set.
• MAGNUM / MAGNUM 40’SL:
2.1 Amps approx. at 50 Hz,
2.5 Amps approx. at 60 Hz
• MAGNUM 20’SL:
2.7 Amps approx. at 50 Hz,
3.2 Amps approx. at 60 Hz
Amperes are recorded in PTI log.
12, 13 5 seconds X X X
COND FAN TEST
SUP RET EVA
5.2C 5.0C 5.1C
1.3A 1.2A 1.3A
With condenser fan on, amp
draw is measured and compared
to the expected amp draw, in
respect to voltage and frequency.
If the phase amp draw differs
more than 1,0 Amp both alarm is
set
.
•
Expected Power Con-
sumption:
1.2 Amps approx. at 50 Hz,
1.5 Amps approx. at 60 Hz
Amperes are recorded in PTI log.
16, 17 5 seconds X X X
PROBE TEST
SUP RET EVA
5.1C 5.0C 5.1C
2.4A 2.3A 2.4A
Evaporator fans operate on high
speed for maximum 3 minutes.
Then probe test runs until
temperature difference between
sensors stops increasing.
Maximum temperature
difference allowed:
•
Return/Evaporator: 1.5C (34.7F);
return air sensor temperature must
be 0.5C (32.9F) above evaporator
sensor temperature.
•
Return/Supply: 0.8C (33.0F);
return air sensor temperature must
be 0.5C (32.9F) above supply air
temperature.
•
LH Supply/RH Supply (if
equipped): 0.5C (32.9F).
115, 116,
117
1 minute
minimum
to
13 minutes
maximum
X X X
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 X X X
Display* Description Possible
Alarms
Duration
(Time)
PTI Brief
PTI
Function
Test