Pfannenberg DTS 3241 Quick Manual

Fault Possible Cause
Unit fails to
cool. Internal Temperature setting to high. Check temperature setting.
fan is running.
Required cooling Check ambient temperature and
capacity exceeds capacity of internal load.
unit.
Dirty filter or condenser. Clean condenser. Clean or replace
filter.
Unit fails
to cool Lack of refrigerant. Call authorized technician. Check
sufficiently. unit for leaks.
Internal and external fans not Call authorized technician. Check
working. fan capacitors. Replace fans.
Air not circulating properly Check enclosure and air circula-
inside the switch cabinet. tion inside enclosure. Air intake
and exhaust must be unimpeded
by components.
Condensate Exiting temperature is too Set cooling unit to a higher tem-
accumulates low. Enclosure is not suffi- perature setting. Close enclosure
in switch ciently sealed. door and improve the seal in the
cabinet. enclosure.
Condensate Condensate drain is clogged. Clean condensate drainage.
fails to drain. Condensate drainage hose must
be inclined downward without
showing a bend.
Indication
Faults LED:
Door Contact *C = Off, CF = Off, EF = Off **Sequence: 1, (Contacts Closed)
High Pressure *C = Off, CF = Off, EF = On ***Sequence: 2, (Contacts Open)
Start Up *C = On, CF = On, EF = On ****Sequence: 3, (Contacts Open)
*C = Compressor; CF = Condenser Fan; EF = Evaporator Fan
Sequence 1: (User Error)
Sequence 2: (Unit Fault)
Sequence 3: (Test/start-up mode)
Cleaning and Maintenance:
The cleaning intervals depend upon the relevant operating condi-
tions. In particular, observe the following instructions:
Clean the heat exchanger regularly.
Clean the heat exchanger using a soft brush or pressurized air.
It is recommended that the condensate run off opening be checked
regularly.
If the cooling units are provided with a filter, clean the filter mat regularly.
The cleaning intervals or the intervals for replacement of the filter mat
mainly depends upon ambient conditions (air quality.)
You can rinse the filter mat using water heated to 40 C and commercially
available mild detergent.
It is possible to remove any dirt by knocking the mat slightly, vacuum clean-
ing it or blowing it out.
If the filter mat is oily or greasy, please replace.
Caution!
Protect the electric components against leakage.
Do not use any pointed of sharp-edged objects. The ribs should not be
compressed or damaged during the cleaning process.
If the covering hood is removed, the electric plug-in connections on the
inside must be removed by hand. During fitting do not forget to plug-in
Remedy
Safety:
Cooling units produced by Pfannenberg are designed for dissipating heat from
switch cabinets. During each cooling process condensate can be produced.
The cooling unit may only be used under the ambient conditions specified on
the enclosed sheet.
The cooling unit is to a large measure maintenance-free, (See Maintenance
Section)
Every other use is considered as non-authorized use making any warranty null
and void.
The electrical equipment must be regularly checked. Any faults such as loose
connections or scorched cable must be removed immediately.
Work on the cooling system and on electrical components may only be carried
out by authorized specialist personnel.
Compliance with applicable safety and environmental regulation is mandatory.
Warranty Conditions:
Warranty becomes null and void:
In case of improper usage of the unit, noncompliance with operating conditions
or nonobservance of instructions.
If operated in rooms in which corrosives or acids are present in the atmosphere.
In case of damage caused by contaminated or jammed air filters.
If a non-authorized person interrupts the cooling circulation, modifies the unit or
changes the serial number.
In case of damage caused by transport or by accidents.
For the exchange of parts by non-authorized companies.
In order to maintain your warranty rights please observe the following when
returning the unit.
Enclose an exact description of the fault in the shipping package.
Enclose proof of delivery (delivery note or copy of invoice).
Return the unit together with all accessories; use the original packaging or
packaging of equivalent quality, send the unit freight prepaid and covered by an
adequate transport insurance.
Subsidiary of the Pfannenberg Group
68 Ward Road—Lancaster, NY 14086
Phone: (716) 685-6866—Fax: (716) 681-1521
!
(WARRANTY IS VALID FOR 1 YEAR)
Pfannenberg Inc.
www.pfannenbergusa.com
885408002
DTS 3241, 3261, and 3281
Indoor and Outdoor Cooling Units
Unpacking:
Prior to and during unpacking make a visual inspection of the cooling unit
to see whether any damage has occurred during transportation.
Pay special attention to loose parts, dents, scratches, visible loss of oil etc.
Any damage must be reported immediately to the delivering carrier.
Save the carton and packaging material and request an inspection.
Then file a claim with the delivering carrier.
Before disposing of packaging material ensure that it does not contain any
loose components.
Danger!
Burrs caused by production may be present on the metal edges of the
unit. Always wear protective gloves when carrying out maintenance
work and installation. In case of a warranty claim, exact details on the
fault (photograph, if possible); the unit part number and serial number
of the cooling unit are required.