Installation
4990671000 February 2008
16
4.5
Protection against intake of dirt
and residue
4.5.1
Suction line
The pipe must be corrosion-resistant inside. Clean the
pipe inside before installing it. Remove all welding
beads, scale and rust.
The suction line should be sufficiently large.
The pipe diameter must at least meet the diam-
eter specifications in chapter 4.4. Otherwise
the machine will be overloaded!
Wrong design of the suction line causes forfei-
ture of all guarantee claims on Gardner Denver
4.5.2
Vacuum filter
Install the vacuum filter directly upstream the machine.
The filter protects the machine from the ingress of im-
purities and attenuates the suction noise.
Observe the flow direction when installing the filter.
The filter insert shall be removable from the filter for
maintenance.
4.5.3
Safety dome
In addition to the float valve, a splash guard must be in-
stalled in the safety dome of the vehicle tank. The
splash guard prevents liquid splash into the system.
4.5.4
Safety bowl
The safety bowl (at the lowest point of the suction line)
must be so designed that
•
entering air does not hit the liquid level directly,
•
sufficient calming space is available,
•
the filter element does not dip into the liquid (also
filters with non-absorbing texture become satu-
rated due to the capillary action of the liquid).
•
A filter element in the safety bowl is not required if
a vacuum filter type SFA-F is used.
To inspect the function of the optimized gravity sepa-
rator illustrated in figure 4.6 proceed as follows:
•
When the amount of water to be separated is
sucked in, that amount must remain in the bowl.
We will be glad to assist you in designing and inspect-
ing your safety bowl.
4.6
Safety and monitoring instruments
The safe operation of the machine (i.e., the operation
of the machine without risk) requires the following
safety and monitoring equipment (also see figure 4.1
and figure 4.2).
All items of safety equipment must be
inspected for proper function at regular inter-
vals (see manufacturer’s technical instruc-
tions).
It is forbidden to change, block or render safety
guards ineffective in any way.
The operating safety of the system (i. e., the safe op-
eration of the machine requires the following safety
and monitoring instruments:
At the suction side:
•
Vacuum gauge
•
Vacuum filter
•
Non-return valve
•
Bellows
At the pressure side:
•
Safety valve
Fig. 4.6
Safety bowl
1
2
3
4
5
6
1
Intake bend
2
Baffle plate
3
Double perforated plate
4
Drain cock
5
Two floating balls
6
Four guide rods
