Customer Service - HYDAC International FPU-1 Notice D'utilisation

7.4 Pressure reduction
(downward adjustment)
– The release valve (B) is opened slowly.
The nitrogen is released into the
atmosphere.
7.5 Finishing
– On bladder accumulators, close the gas
valve insert (E) in the hydraulic accumulator
by rotating the spindle (A) anti-clockwise.
– On piston, diaphragm or metal bellows
accumulators, close the allen screw (P) in
the hydraulic accumulator by rotating the
spindle (A) clockwise.
– Switch off the pressure‑increase system.
– Reduce pressure in the, charging hose and
FPU‑2 via the pressure relief valve (B) of the
FPU‑2.
– Remove the charging hose from the FPU‑2.
Loosen the cap nut (D) and remove the
FPU‑2 from the accumulator.
– On bladder accumulators, unscrew adapter
A3H and insert the O‑ring (O) again. Check
the tightness of the gas valve using leak
detection spray.
Screw and firmly tighten the seal cap (H)
onto the accumulator gas valve (30 Nm).
Manually screw on protective cap (S).
– On piston, diaphragm or metal bellows
accumulators, firmly tighten (20 Nm) the
screw plug (P) with an allen key AF width 6,
DIN ISO 2936. Check the screw plug (P) for
leaks using leak detector spray.
Screw and firmly tighten (20 Nm) the seal
cap (S) onto the screw plug (P).
8. Disposal
Disassemble the FPU into its constituent parts
and dispose of them according to material type.
9. General
Further technical details can be found under
the following brochure section :
"Charging and testing unit FPU"
No. 3.501

10. Customer service

Customer service and repairs can be can be
carried out at the HYDAC Headquarters or in
all national and international HYDAC sales and
service centres.
Contact at Headquarters:
HYDAC Systems & Services GmbH
Werk 13
Postfach 1251
D-66273 Sulzbach/Saar
Friedrichsthalerstr. 15
D-66540 Neunkirchen/Heinitz
Tel.: +49 (0) 6897 / 509‑01
Fax: +49 (0) 6897 / 509‑324
Internet: www.hydac.com
EN
45