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15 Inspection and maintenance
WARNING
The equipment is subject to pressure!
▶ Risk of severe injury or death.
● Depressurize the plant.
● Completely drain the plant.
WARNING
The actuator cover is under spring pres-
sure!
▶ Risk of severe injury or death!
● Do not open the actuator.
CAUTION
Use of incorrect spare parts!
▶ Damage to the GEMÜ product.
▶ Manufacturer liability and guarantee will be void.
● Use only genuine parts from GEMÜ.
CAUTION
Hot plant components!
▶ Risk of burns.
● Only work on plant that has cooled
down.
NOTICE
Exceptional maintenance work!
▶ Damage to the GEMÜ product.
● Any maintenance work and repairs not described in these
operating instructions must not be performed without
consulting the manufacturer first.
The operator must carry out regular visual examination of the
GEMÜ products depending on the operating conditions and
the potential danger in order to prevent leakage and damage.
The product also must be disassembled and checked for
wear in the corresponding intervals.
1. Have servicing and maintenance work performed by
trained personnel.
2. Wear appropriate protective gear as specified in plant op-
erator's guidelines.
3. Shut off plant or plant component.
4. Secure plant or plant component against recommission-
ing.
5. Depressurize the plant or plant component.
6. Actuate GEMÜ products which are always in the same po-
sition four times a year.
7. After removing / installing the GEMÜ product check that
the union nut a is mechanically secured and re-tighten if
necessary.
ð Seals degrade in the course of time.
15.1 Components
1
6
8
7
5
9
4
10
3
Leak detection hole
Vent hole
Fig.11: GEMÜ 550 components
Item Parts list item Name
1 A Actuator
3 a Union nut
4 b Spindle
5 d Nut
6 1 Valve body
7 e Washer
8 14 Seat seal
9 c Valve plug
10 4 Gasket
15.2 Spare parts
Parts list item Name Order designation
A Actuator 9550
1 Valve body K 500…
4 Gasket 550…SVS…
14 Seat seal
15 Inspection and maintenance
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