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C
ZWS
Installation (pictures
,
and
For operating and installation follow any relevant national standards that are in operation.
1. When on vacuum operation connect the suction pipe at (A) and when on pressure operation connect the pressure pipe at (B).
Long and/or small bore pipework should be avoided as this tends to reduce the capacity of the blower.
If alternate vacuum or pressure is required, a change over valve (ZWS) can be fitted (optional extra). In this case there is only one connection (C)
for vacuum or pressure operation. The air exit is at (G 1 ) and the air entry at (G 2 ).
2. The electrical data can be found on the data plate (N) or the motor data plate. The motors correspond to DIN/VDE 0530 and have IP 54
protection and insulation class F. The connection diagram can be found in the motor terminal box (unless a special plug connection is fitted).
Check the electrical data of the motor for compatibility with your available supply (voltage, frequency, permissible current etc.).
3. Connect the motor via a motor starter. It is advisable to use thermal overload motor starters to protect the motor and wiring. All cabling used
on starters should be secured with good quality cable clamps.
We recommend that motor starters should be used that are fitted with a time delayed trip resulting from running beyond the amperage setting.
When the unit is started cold overamperage may occur for a short time.
When using a change over valve (ZWS) also the solenoid (X) must be connected. The voltage of the solenoid valve should also be considered
and checked.
The electrical installation may only be made by a qualified electrician under the observance of EN 60204. The main switch must be
provided by the operator.
Initial Operation (pictures
and
1. Initially switch the pump on and off for a few seconds to check the direction of rotation against the direction arrow (O).
2. When installed on the application and under the highest possible load conditions, the pressure differences of the unit may not be higher than the
max. allowable pressure differences shown on the data plate (N).
Note: If these values are exceeded when the unit is running on normal operating temperature an unloading of the unit is required by
utilising limitation valves ZBS, ZED or ZBD (optional extra).
3. A comparison of the measured current amperage with the max. current amperage on the data plate (N) is not advisable, because the current
amperage depends on the voltage.
Potential risks for operating personnel
Noise Emission: The worst noise levels considering direction and intensity (sound power), measured according to DIN 45635 part 3 (as per 3.
GSGV), are shown in the table at the back. When working permanently in the vicinity of an operating unit we recommend wearing ear protection
to avoid any damage to hearing.
Maintenance and Servicing
When maintaining these units and having such situations where personnel could be hurt by moving parts or by live electrical parts
the blower must be isolated by totally disconnecting the electrical supply. It is imperative that the unit cannot be re-started during
the maintenance operation. Do not maintain a blower that is at its normal operating temperature as there is a danger from hot parts.
These side channel vacuum pumps and compressors need no maintenance apart from filtration.
The capacity of the blower can be reduced if the air inlet filters are not maintained correctly.
1. Mesh on the suction side (A) on the silencer housing:
Cleaning is possible of this through the suction opening (A) after removing the pipework or after unscrewing the silencer box cover.
2. Additional filter (optional extra):
The suction filter (ZAF) should be cleaned every 250 operating hours and changed every 3000 operating hours. Changing the filter: unscrew wing
nut (m
). Remove filter cover (h) and filter cartridge (f
1
Replace the filter cartridge if necessary. Reassemble in reverse order (see picture
The filter cartridge (f
) of the vacuum tight suction filter (ZVF) must be cleaned regularly again depending upon the amount of contamination.
2
Cleaning can be achieved by washing or by blowing out with compressed air. Replace the filter cartridge if necessary. The cartridge (f
removed completely by undoing the relevant retaining clips (m
3. Bearings:
The units have bearings that are greased for life and require no maintenance.
Handling of inflammable or aggressive gases and vapours is only possible with special versions, if the safety instructions XE 1 are
noted.
X
)
)
). The filter cartridge can be cleaned by knocking out by hand or by using compressed air.
1
2
G
1
).
) (see picture
).
C
G
2
G
2
) can be
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