Repair; Disposal - Brinkmann Suction Pumps Series Operating Instructions Manual

11 Repair

Brinkmann Suction Pumps
series SB20...SB60
Exchange the rotary mechanical seal:
1) Disconnect the pump from the power supply.
Check up the marks on the pump unit.
2) Loosen hexagon head cap screws (20).
3) Free intake cover (5) from canal cover (4) with a
light blow of a plastic hammer and remove it.
Remove the O-ring (25).
4) Push impeller (6) with help of two screwdrives
from the shaft (9). Set the screwdrivers between
the impeller (6) and the canal cover (4).
5) Remove woodruff key (18) from the shaft (9)
and remove the canal cover (4). Remove the
gasket (24).
6) Take off the fan cover (11) and draw off retain-
ing ring (12) at SB60 and fan (10) from the shaft
(9), remove parallel pin (19) at SB60.
7) Release stud bolt with bond (13) at SB60 or
slotted cheese head cap screws (15) at SB20
and SB40 and draw off the end shield (7) at
SB60 with stator casing (1).
8) Remove the mech. seal stop ring (14), the
locking ring (17) and the rotating mechanical
seal assembly (23a-23d).
9) Press out the shaft (9) with ball bearing (21,22)
from the motor flange (3) at SB60 or from pump
body (2) at SB20 and SB40. Remove the sta-
tionary mechanical seal part (23e-23f) and the
shaft seal (29) from the pump body (2).
Clean pump parts and seat surfaces of all seals!
The rotary mechanical seal (23) should be re-
placed completely. If required, renew gasket
(24) or O-ring (25).
10)The running surfaces of the rotary mechanical
seal must be free from dirt and grease.
Wet the packing (23f) with water containing
washing-up liquid and press the stationary rotary
mechanical seal part (23e-23f) with the help of a
mandrel flush into the hole of the pump body (2).
Lubricate lightly the rotary shaft seal (29) and
push it into the pump body (2).
11)Press the shaft (9) with ball bearing (21,22) into
the motor flange (3) at SB60 or into the pump
body at SB20 and SB40. Press on stator (1), in-
cluding end shield (7) at SB60, and fix onto mo-
tor flange (3) at SB60 or pump body (2) at SB20
and SB40 with the stud bolt with bond screws
(13) at SB60 or slotted cheese head cap screws
(15) at SB20 and SB40. Release tension in mo-
tor with light blows with a plastic hammer to the
shaft (9) and end shield (7).
Press parallel pin (19) at SB60 in the shaft (9)
and shove fan (10) and retaining ring (12) at
SB60 onto the shaft (9).
Press on the fan cover (11) onto the stator (1).
BE7700
12)Push the rotary mechanical seal part (23a-23d)
(single part) onto the pump shaft (9) and se-
cure with mech. seal stop ring (14) and locking
ring (17).
13)The remaining assembly occurs in reverse order
of item 2) to 5).
Observe assembly markings on the construction
parts!
14)Screw the hexagon head cap screws (20).
Check up the tightening torque!
15)Reconnect pump to the electrical supply.
Fill up the pump!
Check direction of rotation!

12 Disposal

When disposing of the pump or the packaging
materials the local and national regulation for
proper disposal must be complied with.
Prior to its disposal, the pump must be completely
drained and decontaminated if necessary.
06/2019
Edition
Page 8 of 9