Pfannenberg DTT 6401 Serie Instrucciones De Servicio página 79

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3.5.4 Mains supply connection
WARNING
Potential danger due to incorrect cables
An incorrect cable cross-section will cause the cable to overheat. Scorched insulation can cause fires.
 The cable cross-section (4) matches the output required for the power consumption and is
0.5 – 2.5mm² or AWG 20 to AWG 14.
DANGER
Electric arcing can cause electric shock and burns
When disconnecting and connecting the plug connector for mains connection under load or voltage,
electric arcing, dangerous voltage and electric shock can occur.
 The plug connector for mains connection must never be plugged in or disconnected under
load/voltage.
 Work on plug connectors must only be carried out with adequate lighting.
 Always switch off the circuit breaker and secure against reconnection.
DANGER
Life-threatening danger due to electric shock
Circuit breaker systems that are not connected or attached incorrectly can generate hazardous voltages
and electric shock and cause severe accidents.
 Work on electrical connections must be carried out exclusively by trained, qualified electricians.
 Circuit breakers systems must be provided in accordance with DIN EN 60204-1, chapter 8.2.
 Each element of electrical equipment must be connected to the circuit breaker system.
 Never interrupt the circuit breaker system if electrical equipment is attached to covers, doors or cover
panels.
 If parts are removed, e.g. for maintenance work, ensure that the circuit breaker system is not
interrupted for the remaining parts.
The following general requirements must be assured for safe and reliable operation of the cooling units:
•
Upstream installation of a supply-side temperature regulator is prohibited.
•
Connect the fuse specified on the type plate as a power contactor; see
fuse.
•
Ensure that the type plate specifications for rated values match the present values for mains voltage and mains
frequency; seeType plate.
•
Always connect the cooling unit to the mains by means of a separating device (switch/contactor).
 The separating device must have a contact opening of 3 mm. The separating device is installed by the
customer.
Operating Manual DTT 6401 Multicontroller (MC) 086100035a © Pfannenberg GmbH
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Type plate and Adapting the upstream
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