Stuffing Box; Replenishing Of Air In Air Chamber And Pressure Tank; Frost Protection; V-Belts - Steffens WL Bedienungsanweisung

8.2 Stuffing box

The integrated stuffing box consists of a seal ring, a piston rod
guide ring and high-pressure packing rings. The stuffing box
should be allowed to drip slightly in order to protect the piston rod
and the packing. If the box drips excessively, the stuffing box
element should be carefully tightened. If this is not sufficient
remedy, replace the stuffing box (see repair instructions).
2
Fig. 14 Stuffing box
Pos. Description
1 Guide ring
2 Stuffing box element
3 Packing rings
4 Stuffing box
5 Seal ring
8.3 Replenishing of air in air chamber and pressure
tank
If an air controller is built into the pressure tank - standard on
FILIA, FILIUS units - it is maintenance-free, as the air cushion will
automatically be replenished. If no air controller is fitted, the air
must be replenished by hand by opening the snifter valve. This
means that the intervals and the duration of the air-replenishment
process relates to the operating time of the pump.

8.4 Frost protection

Pumps which are not installed in a frost-free position should be
fully drained if they are not being used during periods of frost.
Drain the pump by unscrewing the drain plug in the rear cylinder
compartment and by removing the cylinder over in the front
compartment. Furthermore, loosen the filling plug of the suction
chamber and start the pump for a short period.
Before restarting, seal and prime the pump.
Caution

8.5 V-belts

Adjust the V-belts so that after tightening they will deflect approx.
1 cm. If the value is not achieved, the V-belts should be re-
tightened. The V-belts and the pulleys must be kept free from
lubricant and grease, otherwise the belts will slip and be
destroyed.
Remember to fit the belt guard after tightening
the V-belt.
10
1
5
4
3
cm
cm
a.
ro
c1
App
x.1
Fig. 15 V-belt

8.6 Automatic pressure relief unit, K

The automatic pressure relief unit K is incorporated in the pump
air chamber to protect the pump and pressure tank against
overpressure.
The parts have been examined and are in accordance with the
regulations for pressure tools RL 97/23/EG. The result is
documented by the examination No. CE0045 on the pressure
stop cap of the named authority of the TÜV-Nord.
If the automatic pressure relief unit, K breaks down it must be
completely exchanged. Single parts must not be exchanged.
Piston pumps with an output of Q>3000 l. per hour are equipped
with the pressure safety valve. As the casing is a constructional
part of the middle plate of the air chamber if a break down occurs
here then the complete air chamber including the pressure safety
valve must be exchanged.
3
2
1
12
Fig. 16 Automatic pressure relief unit, K
Pos. Description
1 Suction pipe
2 Discharge chamber
3 Suction chamber
4 Air chamber
5 Liquid circulation in case of overpressure after cut-out
6 Discharge pipe
automatic pressure relief unit K,
7
type approved
8 Handle
9 Cap with type symbol
10 Pressure valve
11 Cylinder compartment
12 Suction valve
Pressure relief setting: 4.0 bar:
Red cap, maximum cut-out pressure 3.5 bar.
Pressure relief setting: 6.0 bar:
Blue cap, maximum cut-out pressure 5.5 bar.
4
5
6
7
8
9
10
11