Hydac FPU Serie Instrucciones De Servicio página 39

NOTICE
Key to fold‑out pages:
2 I = Table "Adjustment of the nitrogen
pre‑charge pressure as a function of
the accumulator temperature"
Our tool can be used to determine
additional values:
3 I = FPU‑1 (with sectional view)
3 II = Adapter A3 for bladder accumulators
3 III = Gas charging connection for bladder
accumulators
3 IV = Gas charging connection for piston,
diaphragm and metal bellows
accumulators
4 I = FPU‑2 (with sectional view)
4 II = Adapter A3H for bladder
accumulators
4 III = Gas charging connection for bladder
accumulators
4 IV = Gas charging connection for piston,
diaphragm and metal bellows
accumulators
5 I = G adapters (part number)
FPU‑1 for nitrogen bottles up to
200 bar
5 II = Charging hoses F, FM, FW for FPU‑1
5 III = Charging hose FH for FPU‑2
2. Design
The HYDAC FPU is a connection unit for
bladder, piston, diaphragm and metal bellows
accumulators The following parts are built on
as standard:
– Valve body
– Spindle
– Non-return valve (only FPU‑1)
– Release valve
– Pressure gauge
– Charging hose
– Adapter A3 (FPU‑1) / adapter A3H (FPU‑2)
only for bladder accumulators
2.1 FPU‑1 diagram


G1
N
2

Adapter G

Pressure reducer

FPU‑1

Charging hose

Adapter A

Nitrogen bottle

Hydraulic accumulator

Fluid connection


M


N
2


EN
39