D39489-BA-PM-EN.pdf - 第27页

27 D39489 | Date 12/2019 Operation Diaphr agm pum p PJ25481 - 950.50.18 16 Trans lation of orig inal Instal lation Instructi ons , englis h , KNF 1255 30 - 316634 0 6/18 W ARN I NG Hazard of the pump hea d bursting due t…

D39489 | Date 12/2019

Diaphragm pump PJ25481-950.50.18 Operation

Translation of original Installation Instructions, english, KNF 125530-316634 06/18 15

7. Operation

7.1. Initial start-up

Operational requirements

Pump

 All hoses attached properly.

 Fan openings not blocked.

 Specifications of the power supply corre-

spond with the data on the pump’s type plate.

 Ensure that the pump outlet is not closed or

constricted.

Tab. 8

7.2. Start up

WARNING

Danger of burns from hot pump parts or hot medium

During or after operation of the pump, some pump

parts may be hot.



Allow the pump to cool after operation.



Take safety precautions against the contact of

hot parts/media.

WARNING

Injury of the eyes

During excessive approach to the inlet or outlet of

the pump, the eyes could be injured by the upcoming

vacuum or overpressure.



Don’t look into the pump’s inlet or outlet during

the operation.

 Only operate the pumps under the operating parameters and

conditions described in Chapter 4. Technical Data.

 Make sure the pumps are used properly (see Chapter 2.1).

 Make sure the pumps are not used improperly (see Chapter

2.2).

 Observe the safety precautions (see Chapter 3).

D39489 | Date 12/2019

Operation Diaphragm pump PJ25481-950.50.18

16 Translation of original Installation Instructions, english, KNF 125530-316634 06/18

WARNING

Hazard of the pump head bursting due to excessive

pressure increase



Do not exceed max. permissible operating pres-

sure (see Chapter 4. Technical Data.



Monitor pressure during operation.



If the pressure exceeds the maximum permissi-

ble operating pressure, immediately switch off

pump and eliminate fault (see Chapter

9. Trou-

bleshooting).

 Only throttle or regulate the air or gas quantity in

the suction line to prevent the maximum permis-

sible operating pressure from being exceeded.



If the air or gas quantity in the pressure line is

throttled or regulated, make sure that the maxi-

mum permissible operating pressure is not ex-

ceeded.



Ensure that the pump outlet is not closed or con-

stricted.

Excessive pressure (with all of the related hazards) can be pre-

vented by placing a bypass line with a pressure

-relief valve be-

tween the pressure and suctions sides of the pump. For further

information, contact our technical adviser (contact data: see

www.k

nf.com).

With the pump at a standstill, open pressure and suction lines to

normal atmospheric pressure.

WARNING

Automatic starting can cause personal injury and

pump damage

When the operation of the pump is interrupted by the

thermal

switch or the trigging device for PTC sen-

sors, the pump will restart automatically after cooling

down.



Take all necessary care to prevent this leading

to a dangerous situation.

7.3. Switching Pump on/off

Switching pump on

The pump may not start up against pressure during switch-on.

This also applies in operating following a brief power failure.

pump starts against pressure, it may block.

This activates the

overload switch and the pump switches off.

 Make sure that normal atmospheric pressure is present in the

lines during switch-on.

 Pumpe am Netzschalter einschalten (siehe Fig. 1/3 in Kapitel

5).

Depending on the applied electrical voltage, initialization of the

electronics may take up to one second before the pump starts.

Pump standstill

D39489 | Date 12/2019

Diaphragm pump PJ25481-950.50.18 Operation

Translation of original Installation Instructions, english, KNF 125530-316634 06/18 17

External actuation

Elektrische Anschlüsse / Electrical connection

Litzenbelegung / lead assignment

Pin Nr. Funktion / function

Signalname

signal name

5V Ausgangsspannung

5V power supply

Masse

Ground

GND

Masse

Ground

GND

Ausgangssignal Drehzahl

Output signal speed

Spd

Versorgung Gasballastventil

Supply gas ballast valve

+GB

Eingangssignal Drehzahlregelung

Input signal speed control

Ctrl

Ausgangssignal Fehler

Output signal fault

Flt

Eingangssignal Remote EIN/AUS

Input signal Remote ON/OFF

Rmt

Masse Gasballastventil

Ground gas ballast valve

-GB

5V Ausgangsspannung U

/ 5V Power supply U

Ausgangsspannung DC

Output voltage range DC

[V] 5 ± 0.2

Max. Ausgangsstrom

Max. current output

[mA] 170

Tab. 9 (part 1): Connection plan motor electronics