Flowserve V901 VariCool Desuperheater Manual do Utilizador descarregar pdf (Página 8)

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Defect

No.

Possible cause

Remedy

Excessive valve seat leakage

4.1

4.2

4.3

• damaged sealing edges at

valve seat or plug

• foreign particles in seat area

• plug does not close fully

• contact customer services

department or contract partner

• contact customer services

department or contract partner

• refer to 3.1 to 3.5

Leaking stuffing box system

5.1

5.2

5.3

5.4

• compression force on packing

too low

• worn packing

• dirty spindle

• damaged spindle

• slightly re-tighten stuffing box packing

Caution: make sure the valve spindles

can still move !

• slightly re-tighten stuffing box packing

Caution: make sure the valve spindles

can still move !

• if the packing does not stop leaking,

contact customer service department

or contract partner

• clean spindle with suitable cleaning

agent

• contact customer services

department or contract partner

Leaking top or lid seal

6.1

6.2

• pressing force on seal(s) too

low

• seal(s) defective

• properly re-tighten top or lid nuts

crosswise

• contact customer services

department or contract partner

Leaking housing

7.1

• medium or flow related damage

• contact customer service department

or contract partner

No limit switch signal

8.1

8.2

• power supply to limit switch

interrupted

• limit switch misadjusted

•

check power supply

( voltage, circuit

breakers, connections )

• readjust limit switch; operating

distance see limit switch data sheet

Vibrating positioner

9.1

• defective positioner

• see maintenance and operating in

structions of positioner manufacturer

If the problem is not solved by taking the above measures, contact the customer services

department or contract partner.

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