Pfannenberg DTS 3000 Series - Manual (Page 10)

DTS Series Cooling Units
7
WARNING!
HOT SURFACE
Even if there is no condensate in the condensate
tray the PTC-heater will be on at a low output.
In the case of excessive condensate
drainage the condensate tray located at
the bottom of the cooling unit may fill with
condensate which is then drained away by
means of a hose connection.
WARNING!
If there is excessive condensate formation
during normal operation, check the electrical
panel enclosure seals.
We recommend that a door contact switch be
installed to turn off the cooling unit when the door
to the electrical panel enclosure is opened in order
to prevent excessive condensate formation.
SECTION 6: UNIT START-UP
6.1 General
The cooling unit is equipped with an electronic
control system. The temperature of the air pulled in
from the electrical panel enclosure into the cooling
unit is measured by a temperature sensor.
WARNING!
Ambient conditions and temperatures
in the electrical panel must be in accordance
with the values indicated in the cooling unit
information sheet.
WARNING!
Unit must be operated with the cover installed.
Unit can not cool properly when cover
is not in place.
Immediately after the main power is turned on for
the cooling unit, the unit goes into its start-up / test
mode.
6.2 Fault indicator / LED Display
The cooling unit has an operational display in
the form of an LED located either on the rear of
the cooling unit or on the external hood of the
cooling unit.
If the indicator light remains on when the power
supply is turned on, it means that the cooling unit is
in its normal operating mode. If a fault is detected
or if the cooling unit is in its start-up / test mode, the
LED will flash in a fault code that can be used to help
diagnose the problem.