Technical user manual SLC
E-control
www.cargofloor.com
www.cargofloor.com
Page 34
Version 01 / July 10
th
, 2017
CHOKE
If the E-controlled Cargo Floor system will be operated by different types of pumps or a pump with a low
oil flow, it could be that you have to pay attention to mount another type of choke.
Choke
There is a standard 6,5 mm [0.26”] choke mounted as standard in the PB channel of the E control valve.
This allows the E control valve to function correctly. This standard choke is suitable for an oil flow level of
60 to 110 litres per minute [16 to 29 gpm]. The function of the control valve can be affected by a
deviation from this oil flow level. The oil flow diagram shows which level of oil flow is required by which
opening. Adjustment of this is possible by simply changing the diameter of the choke.
Known consequences of a wrong choke diameter are:
-
Oil flow too low: load/unload operational plunger is not switching, system gets pressure less;
-
Oil flow too high: noise in system, high heat dissipation and capacity loss.
Flow independent choke
As an option a flow independent choke can be supplied (variable choke article number 7370106). The
standard mounted choke can simply be changed with these. You remove the socket plug out of channel
PB (Allen key 12 mm). After this you screw the choke out of the channel with Allen key 12 mm. Screw
the new variable choke in the channel and fasten these by hand (about 15 Nm [11 lbf/ft.]). Screw the
socket plug back into channel PB (Allen key 12 mm) and fasten these by hand (about 15 Nm [11 lbf.ft]).
Let the floor run (loading and unloading) in order to check if everything is functioning well and no leakage
occur. The variable choke has a flow range of 20-120 ltr./min [5-31 gpm] ±10% using a VG32 and is
suitable for a maximal work pressure of 225 bar [3300 psi].
Important
Connecting pressure and return wrongly will cause a malfunction, and damage to, the system
.
B-control
Another possibility to be independent from a variable oil flow is using a B-control. With this the
loading/unloading direction is determined by a handle.
PB
PB
Standard choke
DIN 906-5.8-
3/4”
Variabele
choke Art. nr.
The shading points out the reach of the standard choke.
