PEDRO GIL RN - FILTER CLEANING AND CHECKING; PRESSURE RELIEF VALVE

To check the blower, the suction and thrust pipes must be disconnected.
The oil level gauges must always be clean. Check them and clean them when visibility is reduced.
After cleaning, the grease must be changed.
In very difficult cases our technical service should be consulted and an occasional visit from one of technical
specialists should be requested.
9.3 CLEANING THE FILTERS
The filter cartridges can be used several times.
The cartridge can be easily cleaned when removed.
Cleaning method:
1. With gentle taps.
2. Blowing with compressed air.
3. Washing with cold water.
4. In difficult cases, such as encrusted dirt, or depending on the type of dust, it can be cleaned with a liquid
mixture of water and a suitable detergent available on the market.
NOTE: never heat the filter cartridges.
9.4 CHECKING THE FILTER
In difficult working conditions, the filter resistance due to dirt can be controlled with the following instruments:
•Water-column pressure gauge.
• Differential pressure gauges
• Pressure switches.
10.0 PRESSURE RELIEF VALVE
This valve is designed to protect the blower from overloads, and it must be located such that between the
blower and the valve there is no closing mechanism.
When assembling the pipe clamp, there must not
be any tension in the base clamp.
The material used in the hood, piston and jig
bushing is bronze (in special cases, aluminium,
stainless steel).
The valve setting is recommended when the blower
is installed and commissioned. See section 6.0.
The adjustment is restricted by the limits of the
valve spring. If the adjustment is necessary beyond
these limits, the spring should be changed.
To make the adjustment or modify the differential
pressure, remove the hood and loosen or tighten
the adjustment nuts.
The jig bushing does not require any lubrication,
but it should be checked for correct operation from
time to time. To carry out this check, the differential
pressure the valve is set at, which is shown on the
specifications plate, has to be produced.
If jammed, disassemble and clean.
15