Spirax Sarco ABV21i, Инструкция по установке и обслуживанию

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IM-P405-46 EMM Issue 5 23
8.2 Actuator without a solenoid valve.
For actuators without a solenoid valve, (or those where the solenoid
valve and mounting block are working correctly), remove the actuator
from the valve, disassemble and check the following:
1.
Make sure all porting is clear of obstructions.
2.
Make certain the actuator is lubricated and that there is no solidified grease between
the pinion and piston racks. If solidified grease is present, clean, dry, regrease and
reassemble.
3. Verify that the actuator pinion shaft and / or pistons are not seized. If seized, reassemble
as per the reassembly instructions in Section 6.4.3.
4. If the unit exhibits excessive backlash, check the teeth on the piston racks for wear.
5. With spring return actuators, check for misplaced or broken springs. If springs are
broken, check the body for scoring.
6. If the actuator and valve are free, reassemble the actuator and retest. If the unit still
fails to operate, consult Spirax Sarco.