Thermo King 098203, Maintenance Manual

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96
MAINTAINING 0C TEST
With the unit running chilled –
Non-Optimized, maintaining 0 deg C
/ 32F.
After 30 minutes the probe readings
and time are recorded in
the pti log.
Maintaining 0C/32F
None 30 Minutes X X -
DEFROST TEST
Test is skipped and Fail if either of
alarm 4,5,130 is present.
Test is skipped if evaporator tem-
perature is at 5degC or above.
With electric heaters turned on, the
test will pass when
evaporator temperature reach
18degC or above.
Defrosting until Eva. > 18C/64F
4, 5, 20,
130
0 to 90 min-
utes at volt-
age above
440V
0 to 120
minutes at
voltages
below 440V.
X X X
PULLDOWN TO -18 C
TEST
With the unit running frozen,
approaching -18 deg C / 0F.
Probe readings and time are
recorded in the pti log when
started and when ended. When
return air temperature is at -18
deg C / 0F the test is ended. If
the test is not ended within the
time limit the alarm is set.
Approaching -18C/0F
22 Max. 3
hours
X X -
PTI END
“PTI End” are recorded in PTI log
and a Trip Start is
automatically activated.
All alarms are cleared and must
be acknowledged by the user.
Unit awaits an
ACCEPT of the
just ended test before returning
to normal operation.
PASSED - PASSED - PASSED
FAILED - FAILED - FAILED
26 Max 90
seconds
X X X
Display* Description Possible
Alarms
Duration
(Time)
PTI Brief
PTI
Function
Test