Blowers for pressure
and Vacuum

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Fan coil electric motors

The range of fan coil electric motors at Sjerp & Jongeneel is normally used for the repair of fan coil units. The fan coil electric motors have a long service life but due to the prolonged operating hours the slide bearing runs more roughly overloading the motor. This can also occur when the impellers in the unit become dirty. Sjerp & Jongeneel can completely recondition the plate with the fan housings and the electric motor for you. In addition, we can supply the fan coil electric motors separately, optionally with foot and clips.

A number of criteria are important when selecting the fan coil electric motor.

  1. Power: We distinguish between the power produced at the shaft [Wr] and the power drawn from the power supply [Wa] Because the single-phase electric motor uses a relatively large amount of reactive current and the output from these small electric motors is lower, the difference between [Wr] and [Wa] is large. For this reason, always check that the nominal motor current of the fan coil motors being exchanged does not differ too much.
  2. Rotational speed (RPM): Most fan coil electric motors have three or more speeds. In practice not all speeds are always used and you can experimentally determine which speeds result in the best control. The maximum speed is the starting point for selecting the fan coil electric motor. After installation, always check that the nominal current for the various speeds and the least resistance for the blower are not exceeded.
  3. Voltage: Most of the times, fan coil electric motors are single-phase 230V 50Hz. Please check your power supply. When connecting make sure that only one speed is powered at the same time. With several speeds powered at the same time the fan coil motor will burn out.
  4. Diameter of the shaft: In most cases 1/2" / 1/2 Inch / or 12,7 mm in one case 3/8" = 9,52 mm occurs.
  5. Length of the shaft: Fan coil units are usually fitted with one, two or three fan housings. Sjerp & Jongeneel have exclusively fan coil electric motors with a shaft on both sides in stock. If the fan coil unit has one fan housing then the shaft on one side can be sawn off without any problems. With three fan housings one or two additional bearings are applied. These are also replaced during reconditioning. In one case the shafts of the new fan coil motor are shorter. If the impeller cannot be put in the correct position in the fan housing the shafts can be lengthened with an extension bush. Ask our sales team about this.
  6. Height and width of the foot: The seating measurement is the distance between the centre of the mountings for the motor. If the seating measurement of the existing foot and the new fan coil motor differ slightly the foot can be bent. Make sure here that the seating of the foot always stay perpendicular to the fan plate. In the case of bigger differences the fan foot can be replaced. The height must correspond to achieve the correct position for the impeller in the fan housing. In some cases the fan foot will have to be raised for this. Some fan coil motors are supplied with the foot as standard.
  7. Balancing: New fan coil motors run vibration-free. New impellers are balanced. Impellers can easily get bent or unbalanced during transport or fitting. Another cause of excessive vibration is an incorrect alignment when lengthening the shaft. Often a slight vibration is unavoidable due to the overall structure. The replacement of one or more impellers can provide the solution. Ask our sales team about this.
Fan Coil SISME K48

The following fan coil motors are generally available from stock:

EURO MOTORS ITALIA

Euro Motors Italia 4983B4040

Thin axis, 1 phase 230 V 50 Hz
Article no. Wr Wa A rpm nr. n Ø T Z L BD H μF Quotation
4983B4040 40 135 0,50 1100 6 9,52 480 131 175 82 - 3,15

 

SISME K35 3-toeren

Fan Coil SISME K35

1 phase 230 V 50 Hz
Article no. Wr Wa A rpm nr. n Ø T Z L BD H μF Quotation
49K35410 32 90 0,4 1100 3 12,7 570 113 228 115 - 2,5
49K35610 18 47 0,21 850 3 12,7 570 113 228 115 - 2

 

SISME K35 7-toeren

Fan Coil SISME K35

1 phase 230 V 50 Hz
Article no. Wr Wa A rpm nr. n Ø T Z L BD H μF Quotation
49K35414 43 110 0,50 1200 7 12,7 500 124 188 105 - 2,5
49K35417 60 180 0,83 1200 7 12,7 570 127 221 105 - 3

 

SISME K48

Fan Coil SISME K48

1 phase 230 V 50 Hz
Article no. Wr Wa A rpm nr. n Ø T Z L BD H μF Quotation
49K48415 120 250 1,1 1100 7 12,7 550 125 212 125 - 5

 

EURO MOTORS ITALIA

EURO MOTORS ITALIA

1 phase 230 V 50 Hz
Article Wr Wa A rpm nr. n Ø T Z L BD H μF Quotation
49103B501106Q 113 300 1,29 1100 3 12,7 600 131 235 103 - 4
49103B50185 185 378 1,8 1200 3 12,7 545 131 205 103 - 6,3

 

RPM

RPM

1 phase 230 V 50 Hz
Article no. Wr Wa A rpm nr. n Ø T Z L BD H* μF Quotation
4911020013 250 625 2,72 1200 3 12,7 580 149 215 129 78 8
4911021403 420 832 3,62 1200 3 12,7 520 165 177 153 81 12,5
4911034501 600 1100 4,8 1310 3 12,7 550 197 176 153 123 16

* Height of shaft when fitted to standard supplied foot.

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