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ZRS
Installation
instructions
200515
5
Systemair
AB
GB
Operating Conditions
Do not operate the fan in an explosive atmosphere.
Switching frequency:
-
The fan is rated for S1 continuous operation.
-
Controls must not allow extreme switching operation!
When using speed control with a frequency inverter, note that the voltage peaks at the motor terminals
must be less than 1000V and the voltage rise rate less than 500V/µs (IEC 34-17). If the operational
leakage current exceeds 3,5mA, earthed in compliance with DIN VDE 0160/5.88, Art 6.5.2.1 must be
provided.
When using a long motor lead wire, install an output filter between the frequency inverter and the
motor!
Noise problems can be eliminated by using a silencer.
Operation
Before initial operation, check the following:
Electrical connection has been properly completed.
Protective conductor has been connected.
Motor protection assembled.
Safety devices in place (protection grid)
Leftover installation materials and foreign materials have been removed from the
casing.
When putting into operation, check the following:
Connection data corresponds to the specifications on the nameplate:
Maximum v6%, -10%, according to IEC 38. Rated current must not be exceeded with more
than 5% at rated voltage.
Note!
When speed regulating by reducing the voltage the motor current may exceed the rated
current at a lower voltage. In this case the motor windings are protected by the thermal contact. The
minimum static fall of pressure must observed.
Make sure that the air supply is adequate for a proper combustion.
Smoothness of motor operation, (no abnormal noises).
Speed control of the fan is recommended
Maintenance, service and repair
Before maintenance, service or repair, make sure that:
Power supply is interrupted (all-pole circuit breaker).
Fan impeller has come to a complete standstill!
Observe personnel safety regulations!
The fan should be cleaned when necessary, at least 1/year to avoid imbalance an unnecessary damage
to the bearings.
If a surplus of tar is built up during combustion it may be necessary to clean the fan more often.
The fan bearings are maintenance free and should only be replaced if damaged.
Do not use a high-pressure cleaner (steam jet) when cleaning the fan. Make sure the fan impeller's
balance weights are not moved or the fan impeller distorted.
Take note of abnormal operating noise!
Check that the impeller is not hindered or the motor protection triggered.
If the fan does not start after it has been checked, and/or the thermal contact is reset, contact your local
supplier.
