IM-P358-26 CH Issue 1
26
Table 3
Actuator model number Spindle nut material Thread (RH or LH)
AEL51_ Plastic Right Hand
AEL52_ Plastic Right Hand
AEL53_ Plastic Right Hand
AEL54_ Brass Right Hand
AEL55_ Brass Right Hand
AEL56_ Brass Right Hand
Always make sure that the electrical supply is switched off when carrying
out maintenance on the actuator or valve.
The actuators have a design life of approximately 200 000 full strokes or alternatively 1.5 million
starts (1 start is 1 movement of the spindle). The maintenance required for the AEL5 actuator
range is to inspect the condition inside of the spindle nut and to lubricate it. If the actuator has
been operating beyond its design limits the spindle nut may require replacing.
Spare parts
Maintenance spare kits are available for the actuators. The kits contain replacement spindle
nuts, 'O' rings, the correct lubricating grease, plus full instructions to carry out the inspection,
lubrication / spindle nut replacement. For more information contact your local Spirax Sarco
branch or distributor.
5. Maintenance
Fig. 30 Spindle nut maintenance
Spindle nut
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