X9 Series metering pumps Operating manual
Page 12 Copyright © - OBL Metering pumps - All rights reserved File: UT-4336 – Rev.0
GB
- in potentially explosive areas unless explicitly ordered for this use
NOTE: It is the responsibility of the customer to verify that the pump is suitable for application/use before
installation and start-up. In case of doubt, do not improvise but contact OBL customer service.
5.8 PROHIBITED USE
It is prohibited to use the X9 pumps as follows:
- in mining plants (underground);
- immersed in water (as submersible pumps)
IS PROHIBITED use the pumps without protective covers or with safety devices tampered with or damaged
X9 pumps in STANDARD version are not suitable for use in potentially explosive areas !
ATTENTION: X9 pumps in ATEX execution are not suitable for use in zone 0/20 !
5.9 NOISE
The table below shows the average noise level (lp noise pressure level) emitted by L series spring return pumps, used within the limits
of use and installed in accordance with the instructions contained in the present operating manual.
These average values were detected on the prototype at a distance of 1 metre from the surface of the machine, at a height of 1,5
meters from the working surface and weighted according to curve A.
METALLIC MATERIAL PUMPHEAD PLASTIC MATERIAL PUMPHEAD
Pump max capacity
(Qmax)
Noise pressure level
(lp)
Pump max capacity
(Qmax)
Noise pressure level
(lp)
Qmax < 200 l/h < 65 dB(A) Qmax < 300 l/h < 65 dB(A)
200 l/h < Qmax < 400 l/h < 68 dB(A) 300 l/h < Qmax < 600 l/h < 68 dB(A)
400 l/h < Qmax < 600 l/h < 70 dB(A) 600 l/h < Qmax < 1000 l/h < 70 dB(A)
600 l/h < Qmax < 1000 l/h < 73 dB(A) 1000 l/h < Qmax < 1500 l/h < 73 dB(A)
1000 l/h < Qmax < 1500 l/h < 75 dB(A) 1500 l/h < Qmax < 2000 l/h < 75 dB(A)
Qmax > 1500 l/h < 78 dB(A) Qmax > 2000 l/h < 78 dB(A)
The employer must implement in the workplace, appropriate technical measures to minimise the risks arising from daily noise exposure
and as much as is necessary to ensure and safeguard the health of personnel in the working environment.
5.10 VIBRATIONS
X9 pumps do not fall into the category of direct human contact machines. Vibrations produced are not significant when pumps are
installed in accordance with these instructions. They are therefore less than 2,5 m/s
2
of acceleration and are not such as to cause
danger situations. If these situations should arise, stop the machine immediately and call the maintenance supervisor.
5.11 POWERING THE ELECTRIC MOTOR WITH INVERTER
The pumps must be especially ordered for powering by means of inverter. Otherwise the end user,
before their installation, must contact OBL to define new limits of use (Hz, pressure and flow rate) that will be
guaranteed only after a new nameplates fixed to the pump.
For a correct use of the pump, the user must comply with the power frequency range allowed by OBL, defined and including from 30Hz
to 80Hz. Moreover, IT MUST NOT EXCEED the max operating pressure indicated on the pump nameplate. This value is downgraded and
takes into account the maximum operating regime at maximum allowable power frequency (80Hz).
User must also comply with any additional instructions provided by the inverter manufacturer. Solutions for meeting system
electromagnetic compatibility (EMC) requirements are the responsibility of the installer.
5.12 TECHNICAL DATA
5.12.1
Pumps type LY, LYH
The full range of variables is shown below:
Plunger diameter: 10, 15, 20, 25, 30, 40, 50, 65
Pumphead execution: X9..., in combination with: ...A, ...P, ...S, ...T, ...ALL, ...LOY, ...TI, ...SAF
Plunger strokes per minute: 25, 36, 50, 70, 95, 100, 118
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