Electro-Pneumatic Positioner
YT-1000R
13. CAUTION AND HANDLING
c
Do not apply large vibration or impact to the positioner.
It causes trouble.
The positioner must be handled very carefully during transportation and operation.
d
If the positioner is used under temperature outside of the specification, the sealing
materials deteriorate quickly and also the positioner may not operate normally.
e
Do not remove the terminal cover at a dangerous position during power conduction.
f
Be sure that the terminal cover and body cover are put on during the operation.
g
If you leave the positioner at the operation site for a long time without using it, put the
cover on it so that the rain water does not enter the positioner.
If the atmosphere is of high temperature or high humidity, take measures to avoid
condensation inside. The condensation control measures must be taken thoroughly for
export shipment.
14. TROUBLE SHOOTING
Replace Cam Shaft
Cam shaft is worn out
Tighten connection
Loose connection of actuator and
poisitioner
Readjust Seat adjuster
Wrong setting of Seat Adjuster
Hysteresis is not good
Replace regulator
Supply pressure is unstable
Readjustment of Zero, Span
Adjustment
Wrong Zero, Span adjustment
Readjust setting of feedback lever
Wrong setting of feedback lever
Linearity is not good
Correct position of tube
Wrong connection of OUT1 and
OUT2 tube
Actuator is operated by
On/Off only
Clean or replace fixed orifice
Clogged fixed orifice
Insert orifice
Too low of actuator volume
Insert stabilizer spring
Off-positioned stabilizer spring
Hunting is occured
Clean nozzle or repalce Motor
Unit
Clogged nozzle
Output pressure is operated
by A/M Switch only
Clean or replace fixed orifice
Clogged fixed orifice
Replace Motor Unit
Wrong contact or search of Flapper
Tighten or replace A/M switch
Leakage of A/M switch
OUT1 pressure raised
And stay, does not
Come down
Correct setting and tighten
Loose or wrong setting of Feedback
Lever
Replace Motor Unit
Clogged Nozzle
Replace Motor Unit
Short or open circuit of terminal
Motor
Connect wiring (+) and (-)
Wrong wiring for (+) and (-)
Tighten set screw of Terminal
Loose connection
Input supply air
Too low or none supply air
Not operated with Input
Signal applied
What to do
Cause
Condition
ЧП
Мельникова
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