MSP4 / MSP5 / MSP6
P. / 7
EM-4854 Rev.8
B) Sensitivity (Deadband)
When the motor repeats small inverting movements with-
out stopping still for small input changes, widen the dead-
band by turning the DZ adjustment clockwise.
C) Limit Switches (optional)
Loosen the screws and adjust positions of the dogs. See Fig-
ure 9.
This adjustment cannot be done in an intermediate position
of the valve. Set it at the fully open or closed position.
Limit Switches
Dog (full-opened position)
Screws
Dog (full-closed position)
Potentiometer
MAINTENANCE
For effective use and longer life of the MSP, regular checking appropriate for its operating conditions are recommended. Refer
to the following table.
ITEM
CHECKING POINT
HOW TO PROCEED
Functioning
Apply input 0%, 50%, 100%, then back to 50%, 0%.
Check the actuator operations and positions at
each input value.
Repair or calibration
Abnormal sound
No abnormal sound is heard during operation.
Repair or calibration
Connector
Leadwire
The connector is firmly connected.
No breakdown of leadwires.
The insulation covers are not torn, not bruised.
Repair or calibration
Inside humidity, rust No condensation. No rust.
If there is water inside, check the packing.
Remove water, dry the case and inside parts.
Replace rusted parts. Calibration.
If the packing is damaged, replace it.
Screws
Check that screws and bolts are securely fastened. Re-tighten them.
Nut
Check that the nut at the valve stem is not loose.
Re-tighten it and calibrate.
For repair or parts replacement, contact M-System or representatives.
■
LUBRICATION
There is no need of oiling the MSP in normal operating conditions.
■
REGULAR TEST RUNNING
If the valve is not frequently operated, run a test operation regularly (once a week, for example) to check proper functions.
Figure 9. Limit Switches
Rugghölzli 2
CH - 5453 Busslingen
Tel. +41 (0)56 222 38 18
Fax +41 (0)56 222 10 12
www.sentronic.com
Produkte, Support und Service
SENTRONIC
AG
