BA-PM400-500-english-D08853.pdf - 第6页

and insert screws  with disk springs  , and tighten them until the screw heads are just fully seated (do not completely tighten them!).  The concave side of the first three disc springs must point away from the screw …

disposed of.

 Use only original KNF replacement

parts.

Parts and tools required:

 1 Service Set (see section 7)

 Screwdriver blade width 2 mm

 Phillips screwdriver No. 2

 Felt-tip pen.

Change the diaphragms and valve pla-

tes/sealings in the following sequence:

a) Preparatory steps

b) Removing pump head

c) Changing diaphragm

d) Changing valve plates/ sealings

e) Refitting pump head

f) Final steps.

 The position numbers in the

following text refer to fig. 2.

a.) Preparatory Steps

 Shut down system (see section 4.2)

including disconnecting the pump

from the power source (pull out

plug of pump).

 Remove tubing from the inlet and

outlet connectors of the pump.

 On the pneumatic head connec-

tions, loosen one of the union nuts

by hand. Then slightly loosen the

angle-fitting in the pump head by

turning it anticlockwise

, so that the

connecting tube can be pulled out

 Undo the screws that hold the

fan cover (see fig. 1) and remove

the fan cover from the motor.

b) Removing pump head

(for each head separately)

 Mark the position of top plate ,

head plate , intermediate plate

, and housing  relative to each

other with a felt-tip pen. This is to

ensure that the parts will be re-

assembled cor rectly at a later

stage.

 Undo the eight screws  and lift

the pump head off the housing .

 The solenoid valve of the

drying system remains fitted

in this situation.

c) Changing diaphragm

 Position the pump so that the dia-

phragm surface is upwards.

 Turn the fan to bring the structured

diaphragm  to top dead centre.

 Using a small screwdriver, bet-

ween the housing and the outer

edge of the structured diaphragm,

carefully lift the edge of the dia-

phragm lightly upwards at one

point (making sure not to damage

the housing). Now grip the edge of

the diaphragm on opposite sides,

unscrew it by turning anti-clock-

wise.

 Take the diaphragm spacer(s)  off

the connecting rod  and retain

them.

 Check that all parts are free from

dirt and clean them if necessary.

 Put the diaphragm spacer(s)



on the thread of the new dia-

phragm.

 Fit the new structured diaphragm

: hold the connecting rod  with

one finger, and gently screw in

(clockwise) the structured dia-

phragm with diaphragm spacers.

 Turn the fan until the structured

diaphragm is at the top dead cent-

re. Using a small screwdriver, bet-

ween the housing and the outer

edge of the structured diaphragm,

carefully lift the edge of the dia-

phragm lightly upwards at one

point. Now grip the edge of the dia-

phragm on opposite sides (do not

overstretch the diaphragm!) and

tighten the structured diaphragm

clock-wise.

d) Changing valve plates/sealings

 Undo the two screws .

 Separate the head plate  with

top plate  from intermediate

plate .

 Remove the valve plates/sealings

 from the intermediate plate.

 Check that the valve seats, the

head plate and intermediate plate

are clean. If scratches, distortion,

or corrosion are evident on these

parts they should be replaced.

 Lay the new valve plates/sealings

 in the recesses in the interme-

diate plate. The valve plates/sea-

lings for suction and pressure sides

are identical, as are upper and

lower sides of the plates/sealings.

e) Refitting pump head

 Turn the fan to bring the structured

diaphragm  to medium position.

 Place the intermediate plate ,

with valve plates/sealings  on

the housing, in the position indica-

ted by the felt-tip pen marking.

 Place the head plate  on the

intermediate plate  in the posi-

tion indicated by the felt-tip pen

marking.

 Place top plate  in position

PM 16527-860.3-2.00 e 11/05

  

 

   

 

Fig. 2: Cross section of pump heads (symbolic)

Specification

Pos Description

 Top plate

 Head plate

 Intermediate plate

 Housing

 Cross recessed raised counter-

sunk head screw

 Structured diaphragm

 Diaphragm spacers(s)

 Connecting rod

 Cross recessed raised cheese

head screw

 Disk spring

 Valve plate/Sealing

and insert screws  with disk

springs , and tighten them until

the screw heads are just fully

seated (do not completely tighten

them!).

The concave side of the

first three disc springs must point

away from the screw head, the

next three towards it (see fig. 2,

detail X).

 Gently tighten the screws ,

evenly and diagonally.

 Turn the fan to check that the

pump rotates freely.

 Now tighten screws  hand-tight.

 Tighten each of the screws  a

half-turn more.

Repeat operations b), c), d), and e) for

the second pump head.

f) Final steps

 Refit the the pneumatic head

connection:

Place tube onto the connecting

part of the angle fitting, turn angle

fitting to a straight position and

tighten the nut.

 Refit the fan cover.

 Reconnect the pump to the electri-

city supply.

 If you have any questions about

servicing call our technical adviser

(see last page for contact tele-

phone number).

6. Troubleshooting

 Sufficient vacuum is not reached

Possible reasons:

 Tube connections are not tight

 Condensate in the pump head

 Switch the drying system on

or reduce the interval bet-

ween pump head ventilation

operations.

 Diaphragms and/or valve plates/

sealings are worn out

 Changing diaphragms and

valve plates/sealings:

see section 5.

 If this problem occurs after chan-

ging of diaphragms and valve pla-

tes/ sealings:

 See information in section 5.

 Pump is switched on, but does not

run, the on/off-switch on the pump

is not lit

Possible reasons:

 Pump is not connected with the

power source.

 No voltage in the power source.

 Fuse in the pump is defective (only

authorized/qualified personnel

should investigate this problem):

 Disconnect the pump from

the power source by pulling

out plug.

Placement of fuse:

 Fuse accessible after opening

the connecting box of the

pump (see fig. 1 for the posi-

tion of the connecting box).

Dimension of the fuse:

see section 8.

 Pump is switched on, but does not

run, the on/off-switch on the pump

is lit

Possible reason:

 The thermal switch has opened

due to overheating

 Disconnect the pump from

the power source, let the

pump cool down, investigate

the reason for the overhea-

ting and irradicate it.

7. Ordering Information

Service Set

A Service Set contains all

replacement parts needed for one

complete service of the pump.

Service Set contains

2 diaphragms, 4 valve plates/sea-

lings

Order No.

047499

8. Specifications

Capacity: max. 60 l/min

Ultimate vacuum: 4 mbar abs.

Permissible operating pressure:

max. 1 bar

Permissible ambient

temperature: + 5... + 40 °C

Hose connection for tube ID 10 mm

Voltage pump: 230 V

Frequency: 50 Hz

Power consum-

ption pump: 220 W

Fuse pump

(2 x): 3.15 T [A]

IP 54

Voltage solenoid

valve 24 V DC

 CE - Safety Demands

 The pumps correspond to the

safety regulations of the EU low

voltage directive 73/23 EWG and of

the EU directive concerning elec-

tromagnetical compatibility 89/336

EWG. The requirements of the fol-

lowing harmonised standards are

fulfilled:

EN 55014

EN 61000-6-1

EN 61000-6-3

EN 61000-3-2/3

EN 61010-1

 The pumps correspond to IEC 664:

 the overvoltage category II

 the pollution degree 2.

PM 16527-860.3-2.00 e 11/05

Appendix:

Customer statement for

repair order (sample

statement for copying)

 In order for KNF to repair the

pump, the customer must provide

a statement on the media which

were pumped and on pump

cleaning. Please fill out the cor-

responding KNF form, and submit

it together with the pump.

Statement/Certificate

We confirm that the pump

model listed below

(please specify)

.............................................

Serial-No. (please specify)

.............................................

was used to pump the fol-

lowing media:

.............................................

and that the pump listed

above was cleaned. There

are no poisonous, aggres-

sive, biological, radioac-

tive or other dangerous

media in the pump.

................ ......................

Company Date/

Signature

PM 16527-860.3-2.00 e 11/05

KNF Neuberger GmbH

Alter Weg 3

D-79112 Freiburg

Tel. ++49/7664/5909-0

Fax ++49/7664/5909-99

E-Mail: info@knf.de