DTS 3041, 3061, and 3081
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 mainte-
nance work and installation. In case of a warranty claim, exact de-
tails on the fault (photograph, if possible); the unit part number and
serial number of the cooling unit are required.
885408000a
Pfannenberg Inc.
Subsidiary of the Pfannenberg Group
68 Ward Road—Lancaster, NY 14086
Phone: (716) 685-6866—Fax: (716) 681-1521
www.pfannenbergusa.com
Fault
Possible
Cause
Remedy
Unit fails to
cool. Internal
fan is running.
Temperature setting to
high.
Check temperature setting.
Unit fails to
cool suffi-
ciently.
Required cooling capacity
exceeds capacity of unit.
Dirty filter or condenser.
Lack of refrigerant.
Internal and external fans
not working.
Air not circulating properly
inside the switch cabinet.
Check ambient temperature and internal
load.
Clean condenser. Clean or replace filter.
Call authorized technician. Check unit
for leaks.
Call authorized technician. Check fan
capacitors. Replace fans.
Check enclosure and air circulation
inside enclosure. Air intake and exhaust
must be unimpeded by components.
Fault contacts
are opened.
Power has been interrupted
from unit. High pressure
switch has cycled due to
dirty condenser circuit.
Establish power to unit. Check condition
of filter and condenser and clean if
necessary. Check ambient conditions.
Condensate
accumulates in
switch cabinet.
Exiting temperature is too
low. Enclosure is not
sufficiently sealed.
Set cooling unit to a higher temperature
setting. Close enclosure door and
improve the seal in the enclosure.
Condensate
fails to drain.
Condensate drain is
clogged.
Clean condensate drainage. Conden-
sate drainage hose must be inclined
downward without showing a bend.
Changing of Filter:
Lift gently on upper right corner of filter housing. Remove filter and
follow recommendations for cleaning.
Maintenance:
The cleaning intervals depend upon the relevant operating conditions. 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 regu-
larly.
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
cleaning it or blowing it out.
If the filter mat is oily or greasy, please replace.
Warranty Conditions:
(WARRANTY IS VALID FOR 1 YEAR)
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.
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 cables 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 regulations is mandatory.
