OPERATION AND MAINTENANCE MANUAL
MAC-HS MOTORS
PAGE: 31
CODE: CTT32 EDITION: 04 RELEASE: SEPTEMBER 2020
Subject to technical changes without prior notice
3.7.6
Anti-condensation heaters
As an option (on request), one or two heating elements can be installed on the winding heads to prevent condensation on the
motor windings when the motor is to be installed at a site with high relative humidity (> 85%).
The standard VASCAT type is 50 W 230 VAC.
3.7.7
Fan and pressure gauge
MAC-HS series motors are air-cooled using a forced ventilation system that includes one or two electric fan powered
independently from the motor.
The fan on the MAC-HS series motors can be installed in the following positions:
Motor
Shaft height
Circulation
direction
No. fan units
Standard
position
Optional
positions
MAC-HS4
100
132
160 S, M
Blowing
1
Top
Side
MAC-HS4
MAC-HS2
160 L, P
200
250
225
250
Blowing
2
Top
Top/Side
Table 21: Fan position
Other mounting options are possible on request.
The standard versions of these units are powered with single-phase or three-phase alternating current (see motor technical data
sheet for more information). Other ventilation methods can be studied on request.
Radial electric fans incorporate a washable filter to prevent incoming particles from damaging the motor. This filter requires
regular maintenance (see subsequent sections). This type of fan can include, (on request) an anemostatic relay (pressure gauge)
with a set of NC/NA contacts that open/close when the airflow is insufficient.
Summary of Contents for MAC-HS 100
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