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s
s
f
s
G
b
m
C
h
m
D
k
o
e
Initial Operation (pictures
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to
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1. Initially switch the pump on and off for a few seconds to check the direction of rotation against the direction arrow (O).
Note: On this initial start the suction pipework should not be connected. If the pump runs backwards with the pipework connected
a pressure could build up within the cylinder which could result in damaged rotor blades.
2. Connect the suction pipe at (A) and pressure pipe at (B).
For pipework longer than 3 m we recommend using non-return valves (ZRK), to avoid reverse rotation when the units are switched
off.
3. The requested pressure and vacuum ranges can be adjusted by turning the pressure regulating valve (D) and the vacuum regulating valve (C)
according to the symbols on the top of the regulating valves.
Potential risks for operating personnel
Noise Emission: The worst noise levels taking into consideration direction and intensity 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 pump, 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 pump 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 pump that is at its normal operating temperature as there is a danger from hot parts.
1. Lubrication
The KLT pressure vacuum units have bearings that are greased for life. They need not be serviced.
2. Air filtration (pictures
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)
The capacity of the pressure/vacuum pump can be reduced if the air inlet filters are not maintained correctly.
The filter cartridges (e) for vacuum and (f) for compressed air and (h) for air charging have to be cleaned depending on the amount of contamination.
This is achieved by blowing compressed air from the inside of the cartridge outwards. Even if the cartridges are cleaned their separating efficiency
deteriorates. We would therefore recommend exchanging the cartridges every six months.
Changing filters:
KLT (01
➝
06) and (08
➝
10): remove exhaust grid (G).
Take off screw cap (s) and milled knob (m). Remove milled nut (o) and take off filter cover (k). Pull filter cartridges (e), (f) and (h) off and clean
or exchange. Re-assemble in reverse order.
3. Blades (pictures
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Checking blades: KLT 10 - 25 have 6 blades whilst the KLT 40 has 7 blades. The blades have a low but permanent wear factor.
KLT 10 and KLT 15: first check after 7,000 operating hours, thereafter every 1,000 operating hours.
KLT 25 and KLT 40: first check after 5,000 operating hours, thereafter every 1,000 operating hours.
KLT (01) - (09)
➝
remove exhaust grid (G). Take off housing cover (b) from housing. Remove blades (d) for inspection. All blades must have a
minimum height (X):
Model
X (minimum height)
KLT 10
20 mm
KLT 15
24 mm
KLT 25
24 mm
KLT 40
35 mm
Blades must be changed completely.
Changing blades: If the minimum height is reached, then the whole set of blades should be changed.
Before fitting new blades clean the housing and rotor slots with compressed air. Place the blades with the radius outwards (Y) so that the bevel
is in the direction of rotation (O
1
) and corresponds with the radius of the housing (Z).
Fix end cover (b) and exhaust grid (G). Before restarting the pump check free movement of the blades by turning the motor cooling fan before
refitting the cooling grid (G
1
) or fan cover (G
2
).
