Page 4
1 Hints on the manual ............................27 2 Handling ................................27 2.1 Transport ..............................27 2.2 Storage ................................. 27 2.3 Unpacking ..............................28 3 Scope of delivery and options ..........................28 4 General Information ............................28 5 Name plate ................................. 28 6 Safety ..................................
Page 5
11.2 Operation display ............................45 11.3 Start-up / Test mode ..........................46 11.4 Door contact .............................. 46 11.5 Equipment fault ............................46 12 Parameters View and Settings .......................... 47 13 Cleaning and Maintenance ..........................48 13.1 Cleaning ..............................48 13.2 Maintenance .............................. 48 14 When not in used .............................
1 Hints on the manual This handbook contains instructions for the installation and operation of door or side-mounted, bolt-on Cooling Units provided by Pfannenberg. In this manual, safety recommendations and other information are structured as follows. If the measures described in the following are not strictly observed there is danger to life and health.
Any damage must be reported immediately to the forwarding agent ). Moreover, the latest edition of the "Pfannenberg After Sales Service Declaration" shall apply. •Before disposing of packing material ensure that it does not contain any loose components. Burr caused by production may be present on the metal edges of the unit. Always wear protective gloves when carrying out maintenance work and installation.
6 Safety Cooling units produced by Pfannenberg are designed for use in dissipating heat from switch cabinets (IP 54). The cooling unit is only suitable for installing on the stationary operation. Only the authorized specialist can work on the cooling system and electrical components.
7.2 Operating principles The compressor (1) compresses the refrigerant until high pressure is achieved. During this process temperature increases. In the condenser (2) heat is dissipated to ambient air, the coolant becoming liquid. The condenser fan (5) takes ambient air in through the condenser, and then it releases the air.In the expansion valve (3) the pressure of the coolant drops.
8.2 Spare parts Please order your spare parts only with the Pfannenberg-parts-number. Spare parts 8021E 8031E 8241E 8341E 8441E 8541E Internal fan 18861100025 18861100017 18861100019 18861100020 18861100020 18861100022 External fan 18861100026 18861100018 18861100020 18861100020 18861100021 18861100022 Cover(RAL7035) 18860200022 18860200014 18860200015...
8.4 Airflow principle Read this manual completely and carefully before installing the unit. Prior to mounting, ensure that the clearance of the units to each other and to the wall is at least 200mm; air inlet and outlet are not obstructed on the inside of the enclosure. 8.5 Technical Data 685408017V0.5...
Page 38
Cooling data DTS 8021E Cooling capacity at A35/A35 * 300 W Cooling capacity at A50/A35 * 150 W Refrigerant type * R 134a Refrigerant amount * 120 g Thermostat setting, (factory set) +35° C (+95° F) failure indication: Enclosure internal temp. (factory set) >...
Page 39
Cooling data DTS 8031E Cooling capacity at A35/A35 * ** Q 500 W Cooling capacity at A50/A35 * ** Q 330 W Refrigerant type* R 134a Refrigerant amount* 190 g Thermostat setting, (factory set) +35°C (+95°F) Failure indication: Enclosure internal temp. (factory set) >...
Page 40
Cooling Data DTS 8241E Cooling capacity at A35/A35 * 1000 W Cooling capacity at A50/A35 * 840 W Refrigerant type * R 134a Refrigerant amount * 430 g Thermostat setting, (factory set) +35°C (+95°F) Failure indication: Enclosure internal temp. (factory set) >...
Page 41
Cooling data DTS 8341E Cooling capacity at A35/A35 * 1500 W Cooling capacity at A50/A35 * 900 W Refrigerant type * R 134a Refrigerant amount * 430 g Thermostat setting, (factory set) +35°C (+95°F) Failure indication: Enclosure internal temp. (factory set) >...
Page 42
Cooling data DTS 8441E Cooling capacity at A35/A35 * 2000 W Cooling capacity at A50/A35 * 1400 W Refrigerant type * R 134a Refrigerant amount * 850 g Thermostat setting, (factory set) +35°C (+95°F) Failure indication: Enclosure internal temp. (factory set) >...
Page 43
Cooling data DTS 8541E Cooling capacity at A35/A35 * ** Q 2500 W Cooling capacity at A50/A35 * ** Q 1800 W Refrigerant type * R 134a Refrigerant amount * 760 g Thermostat setting, (factory set) +35°C (+95°F) Failure indication: Enclosure internal temp. (factory set) >...
9 Installations 9.1 General •For effective cooling & ventilation , correct installation & ventilation of the cooling unit is very important. •The distance must be kept at least 200mm between units or the unit to the wall. •The cooling unit’s electrical connection terminal requires at least 40mm space and the electrical components shall not impede air circulation in the internal cabinet.
1 Cooling unit DTS 5 springs shim 2 switch cabinet wall or door 6 nuts 3 thread rod 7 bolts 4 flat gasket 8,9,10,11,12 sealing strip 5) If M8 bolts on the top of unit being removed during insatallation, rescew them back to the unit tightly after installation.
The cooling unit may be damaged if the voltage is too high. It’s nominal voltage is 230V or 400V. 10 Operating condition •The voltage must be within ± 10% of the value indicated. •The frequency must be within ±3Hz of the value indicated. •Ambient temperature must be below 55℃.
11.3 Start-up / Test mode The cooling unit does not work if the door switch is open. Each time the unit is power-on (when the door switch is closed), the unit performs a start-up process lasting around 3 seconds which is followed by a test mode lasting around 110 seconds.
will open the failure contact and the alarm code will be shown on the display. (See Section 15 for trouble shooting). The installation of the fault signal line is not subject to any special requirement. The contact may be loaded with max230V, 1A 12 Parameters View and Settings Parameters of cooling unit can be monitored and set via operation display.
13 Cleaning and Maintenance Please cut off the cooling unit’s power before carrying out any cleaning or maintenance operation. 13.1 Cleaning The operation efficiency and reliability of the equipment will be improved by periodic cleaning and maitenance, call our service team for further service cooperation. Pay special attention to the following instructions: •Use a soft brush or compressed air (Medium pressure to avoid damage to the fins).
persons cannot start the cooling unit. When the cooling unit is no longer needed, it must be disposed of by authorized personnel in accordance with all applicable environmental protection regulations. (See section 4) 15 Trouble shooting In spite of careful maintenance, the equipment may still have a failure sometime in the future. The real-time self-check function can diagnose the failure.
Page 51
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.
Need help?
Do you have a question about the DTS 8000E Series and is the answer not in the manual?
Questions and answers