Exchanging The Operating Diaphragm - Samson 44-7 Mounting And Operating Instructions

Servicing
Assembly of Type 44-7
1. Screw in the seat using a seat wrench.
Observe the tightening torques specified
in section 7.4.
2. Renew the seal (1.3) and insert it into the
body.
3. DN 15 to 25: insert and screw in the
guide nipple (3.6). Observe the tighten-
ing torques specified in section 7.4.
DN 32 to 50: insert the the guide nipple
(3.6) and screw in the plug nipple (3.5).
Observe the tightening torques specified
in section 7.4.
4. Place the plug (3) onto the plug stem and
screw on the plug nut (3.2). Observe the
tightening torques specified in sec-
tion 7.4.
5. Renew the seal (1.2) and insert it into the
body.
6. Screw in the body stopper (1.1). Ob-
serve the tightening torques specified in
section 7.4.
7. Check the facings of the actuator hous-
ing (6) for dirt and clean them, if neces-
sary.
8. Place the actuator housing (6) on the
valve body (1) and screw tight the body
screws (13). Observe the tightening
torques specified in section 7.4.
9. Screw on the control line (11). Observe
the tightening torques specified in sec-
tion 7.4.
10. Put the regulator into operation (see sec-
tion 5.3).
26
7.2 Exchanging the operating
diaphragm
DANGER
!
Risk of personal injury due to preloaded
springs.
Regulators in combination with preloaded
set point springs are under tension. These
regulators can be identified by the red warn-
ing label on the actuator's set point springs.
− Before starting any work on the springs,
relieve the compression from the preloaded
springs.
− Only use the SAMSON disassembly tool
(1280-4052).
NOTICE
!
Risk of regulator damage due to excessively
high or low tightening torques.
Observe the specified torques on tightening
regulator components. Excessively tightened
torques lead to parts wearing out quicker.
Parts that are too loose may cause leakage.
Observe the specified tightening torques.
NOTICE
!
Risk of TÜV approval (based on AGFW
worksheet FW 506) for Types 44-4 and
44-8 becoming void.
Consult SAMSON's After-sales Service
department before you change parts or
perform service or repair work on TÜV-
tested Type 44-4 and Type 44-8 Regulators.
EB 2723 EN