Idiomas disponibles
Idiomas disponibles
Initial Operation (picture
)
1. Initially switch the compressor on and off for a few seconds
to check the direction of rotation against the direction arrow
(see motor data plate (P)).
Note: The pressure pipework should not be connected.
If the compressor runs backwards this could result in
damaged rotor blades.
2. Connect the pressure pipe at (B).
3. Pressure regulating valve (optional extra):
The requested pressure ranges can be adjusted by turning
the pressure regulating valve (D) according to the symbols
on the top of the regulating valve.
Potential risks for operating personnel
Noise Emission: The worst noise levels considering direc-
tion 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 compressor 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 compressor 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 compressor that is at its normal operating temperature as there is a danger from
hot parts.
1. Lubrication
The DTE compressors have bearings that are greased for life. They need not be serviced.
2. Air filtration (picture
)
The capacity of the pump could be reduced if the air inlet filters are not maintained correctly.
The filter cartridge (f) has to be cleaned monthly 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 once a year depending on operating conditions.
Changing the filter: Screw off housing cover (d). Remove filter cartridge (f) with gaskets from filter space (g). Clean or exchange filter and check
gaskets. Reassemble in reverse order.
3. Blades (picture
)
Checking blades: The models DTE have 4 blades which have a low but permanent wear factor.
First check after 6,000 operating hours, thereafter every 1,000 operating hours. Screw off housing cover (d) from housing. Remove blades (e)
for inspection. All blades must have a minimum height (X) of larger than 10 mm (DTE 3 and DTE 6) and 12 mm (DTE 8 and DTE 10).
Blades must be changed completely.
Changing blades: if the minimum height is reached, then the whole set of rotor 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
) and corresponds with the radius of the housing (Z). Replace housing cover (d) and slightly tighten the screws (s).
1
Start pump and check for free and smooth running blades. Then firmly tighten end cover screws (s).
Trouble Shooting:
1.
Motor starter cuts out compressor:
1.1 Check that incoming voltage and frequency corresponds with the motor data plate.
1.2 Check the connections on the motor terminal block.
1.3 Incorrect setting on the motor starter.
1.4 Motor starter trips too fast. Solution: Use a motor starter with a time delay trip (version as per IEC 947-4).
1.5 The limiting valve or regulating valve is dirty causing excess pressure.
2.
Insufficient pressure capacity:
2.1 Inlet filters are obscured.
2.3 Leak on the compressor or on the system.
3.
Compressor does not reach overpressure:
3.1 Leak on the compressor or on the system.
4.
Compressor operates at an abnormally high temperature:
4.1 Ambient or suction temperature too high.
4.2 Cooling air flow is restricted.
4.3 Problem as per 1.5.
5.
Unit emits abnormal noise:
5.1 The compressor cylinder is worn. Solution: send your complete unit off for repair to the supplier or approved service agent.
5.2 The regulating valve is noisy. Solution: replace valve.
5.3 Blades are damaged.
Appendix:
Repair on Site: For all repairs on site an electrician must disconnect the motor so that an accidental start of the unit cannot happen.
All engineers are recommended to consult the original manufacturer or one of the subsidiaries, agents or service agents. The address of the nearest
repair workshop can be obtained from the manufacturer on application.
After a repair or before re-installation follow the instructions as shown
under the headings "Installation and Initial Operation".
Storage: DTE units must be stored in dry ambient conditions with
normal humidity. We recommend for a relative humidity of over 80%
that the compressor units should be stored in a closed container with
the appropriate drying agents.
Disposal: The wearing parts (as listed in the spare parts lists) should
be disposed of with due regard to health and safety regulations.
E 387 ➝ DTE 3 - DTE 10
Spare parts list:
g
f
2.2 Pressure pipe work is too long or too small.
2.4 Blades are damaged.
3.2 Blades are damaged.
DTE
Noise level (max.)
dB(A)
Weight
Length
Width
Height
Y
Z
X
O
1
e
d
3
6
8
50 Hz
60
63
65
60 Hz
61
64
66
kg
6,5
7,5
8,0
mm
209
224
249
mm
153,5
mm
151
157
157
s
10
65
66
10,2
264
157
10.06
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