Thermo King T-1080S, Maintenance Manual

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Operating Instructions for Standard HMI Control Panel
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amber LED indictor will glow. If the unit is
running in CYCLE-SENTRY Mode, pressing this
key will switch operation to Continuous Mode
and the amber LED will turn off.
The unit shown in Figure 26 is running in
CYCLE-SENTRY Mode.
Figure 26: CYCLE-SENTRY/Continuous Key
CAUTION: The engine may start automatically
any time the unit is turned on.
CAUTION: If the unit is in CYCLE-SENTRY
null and the mode is switched to Continuous
Mode, the unit will start automatically.
Selecting the High Speed
Lock-Out Feature
If the High Speed Lock-Out feature is enabled and
turned on, the unit will run only in low speed until
the High Speed Lock-Out feature is turned off or
the High Speed Lockout Timer is exceeded. This
feature is typically used in noise sensitive areas to
reduce unit engine noise.
High Speed Lock-Out is turned on or off by
pressing the HIGH SPEED LOCKOUT Key when
the unit is turned on. Pressing this key will turn
High Speed Lock-Out on, pressing it again will
turn High Speed Lockout off. If High Speed
Lockout is turned on, unit will switch to low
speed operation and the amber LED indictor will
glow. No further high speed operation is allowed
until this feature is turned off or the High Speed
Lockout Timer is exceeded.
IMPORTANT: HIGH SPEED LOCKOUT
TIMER: If High Speed Lockout Mode is
selected, the High Speed Inhibit Timeout feature
may be enabled to return the unit to normal
operation after a set time period has expired.
This prevents unintended extended operation
with high speed operation locked out. The time
period may be set from 15 minutes to 2 hours. If
a time period is set and exceeded, the unit will
return to normal operation with high speed
operation allowed and the amber LED indicator
will turn off. If necessary to return to High
Speed Lockout Mode, press the HIGH SPEED
LOCKOUT Key again.
The unit shown in Figure 27 has High Speed
Lockout turned on.
.
Figure 27: HIGH SPEED LOCKOUT Key
Initiating a Manual Defrost
Cycle
Defrost cycles are usually initiated automatically
based on time or demand. Manual defrost may
also be available. Defrost is only available if the
unit is running and the evaporator coil
temperature is less than 45 F (7 C). Other features
such as door switch settings may not allow
manual defrost under some conditions.
To initiate a manual defrost cycle, press the
DEFROST Key as shown in Figure 28. If
conditions allow, the unit will enter a defrost cycle
and the amber LED next to the DEFROST Key
will glow.
Figure 28: DEFROST Key