Adjustment - WERTHER INTERNATIONAL NORGREN 5 μm Betriebsanweisung

INSTALLATION
Before installation the operating conditions of temperature, pressure, etc; must be checked for-
conformity with the Technical Data.
The unit should be mounted securely in an accessible and visible location upstream from lubri-
cators and near components being served. Strain on pipe work and fittings should be avoided
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and directional f\ow arrows observed.
With cyclic demand systems the filterregulator should be installed upstream of directional con-
trol valves. Airline piping should be the same size as unit ports with airflow in the direction of the
arrow.
A pressure gauge may be connected to the appropriate R1/8 port after removing the plug and
should have a range exceeding the maximum proposed outlet setting.

ADJUSTMENT

With the regulator adjustment completely backed-off the air supply can be tumed on. The adju-
sting knob can be rotated clockwise to increase the spring load and the pressure increase ob-
served on the gauge.
Minor adjustments after setting changes can be avoided by always approaching the desired set-
ting from a lower level.
When a lower setting is required, firstly reduce to a lower level and secondly increase to the de-
sired setting.
Decreasing the pressure setting on a relieving type regulator will cause air to exhaust through
the bonnet vent hole.
The non rising adjusting knob includes a locking feature; push knob in after setting to lock and
prevent adjustment. To release pull knob out.
Auto-drain units should have a 4 mm bore f\exible tube pushed in the M5 quick-coupler on the
bottom of the bowl to pipe away expelled condensate.
Avoid restricting the drain pipe. Manual drain units must be drained before the contaminant le-
vel reaches the element.
Should this occur then liquid contaminant wi\l be carried downstream.
MAINTENANCE
Air service equipment should be initia\ly maintained annually. Use, quality of air and condition at
examination mày indicate adjustment of the maintenance interval.
Before attempting to service any unit, shut-offthe air supply and exhaust the system completely.
Unscrew the filter bowl (25) counter-clockwise and remove with O-ring (26).Unscrew the ele-
ment (lla) and remove complete with louvre (11) and gasket (10).
The bowl should be cleaned using soapy water ONLY. (Solvents, etc. can damage or destroy
seals, etc.) Bowls should be inspected for signs of mechanical damage corrosion.
Partial cleaning of the filter element is possible by washing the element in soapy water and blo-
wing out thoroughly with compressed air. Replacement by a clean element is recommended.
To disassemble the regulator section tum the adjusting knob (Ib) counter-clockwise1o relieve
compression on the adjusting spring (2). The bonnet assembly (la) can be removed by unscre-
wing and enables removal of the adjusting spring (2), slip ring (3) and diaphragm (4). Unscrew
the valve seat (5b) and remove with O-ring (5c). Valve (6) and spring (7) may then be removed.
Inspect a\l components for damage, foreign matter and cleanliness and reassemble using servi-
ce replacement parts where necessary. During reassembly all O-rings, gaskets and where ap-
plicable, the lip ofthe auto drain valve, should be lightly smeared with BPLS2 Energrease (or si-
milar) and the diaphragm valve pin checked forfree movement in thevalve seat.
The manual drain should be drained weekly and the filter element changed annually.
The regulator should be assembled in the vertical position. Tighten the valve seat (5b) to 0.4 to
0.7 Nm,the element(Ila) and bowl (25) to 0.5 to 1.0 Nm and the bonnet (la) to 7to 8 Nm.
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