User manual

Bedienungsanleitung Drehstrom-Schneckengetriebemotor

User manual three-phase worm gearbox motor

MSF-Vathauer Antriebstechnik GmbH & Co KG Am Hessentuch 6-8 32758 Detmold

Tel: ++49 (0)5231 – 66193 + 63030 Fax: ++49 (0)5231 – 66856

Email: info@msf-technik.de www.msf-technik.de

47. Electrical connection

The motor is connected in accordance with the data shown on the nameplate and per

the accompanying circuit diagram. Ensure that the terminal links are correctly placed

and all connections, including the protective earth conductor, are screwed tightly. To

protect the motor from being overloaded, appropriate protective devices must be

provided. Fuses do not give this protection. For motors with high starting frequencies

the conventional motor protection is insufficient; and it is advisable to purchase these

motors with thermistors imbedded in the windings and to monitor them with an

external tripping relay. In this manner the motors are fully protected against practical

all possible overloads.

Delta connection Star connection

48. Maintenance Plan

For motors up to and including size 160 it is sufficient to keep the cooling passages

cleaned and to check the bearings. These motors have bearings with service life

lubrication. If the motor is being overhauled the bearings are to be replaced. Motors

larger than size 160 are provided with a lubricator. In addition to keeping the cooling

passages clean, the bearing should be checked regularly and re-lubricated with a

grease pump according to the schedule below.

As soon as the maximum number of re-lubrications is exceeded, the old grease must

be removed from the grease chambers and bearings, after which these must be

cleaned thoroughly. Next the inner chambers and the bearings must be provided with

new grease. The outer chambers may not be filled with grease. For the lubrication of

the bearings a grease lubricant must be used that consists of mineral base oils and a

thickening agent with a base of lithium soap or a lithium soap complex, having a

consistency class of 3 according to NLGI.