28
Drainingsystem(optioncodeR1,R2,R3,R4,R5,R6)
A pump equipped with the unique ALMATEC draining system can be emptied
alongwithan inclining dischargeline while beinginstalled withinthe plant. The
systemisnotappropriatetoflushthepumpwith
anotherliquid,norfromsuction
nozzle norfrom dischargeconnection.It consists ofa bypass‐systemin theside
housings [1], which can be activated by manual valves (code R 1/R 2/R 5) or
pneumatically(codeR3/R4/R6).Openthemanualvalves(codeR1/R2/R5)by
approx.
10 mm by turning to the left (Attention: As there is no blocking of the
valves,ithastobeensur ednottotakethemoutcompletely).Thepumpshould
bekeptinoperationmeanwhile.Slowdownthepumpslowly andfinallystopit.
Thedrawingontheleftillustrates
theconnectionschedulefortheairsupplyofa
pump with the pneumatic draining system (code R 3/R 4/R 6, minimum air
pressure 3 bar). By attaching a 4 ‐2 ‐way valve (not included in the delivery ), the draining system can be
activatedautomaticallywhencuttingoffthepump.TheO
‐ringssidehousingaremadeofEPDM(codeR1/R
3),FEP(codeR2/R4)orNBR(codeR5/R6).
Spare part list Draining System E 15 E 25 E 40 E 50
Code Item Pc. Description Material Part-No. Part-No. Part-No. Part-No.
R1
1 2
Side housing for back flushing system:
- code E..
- code F..
- code T..
- code U..
PE
PE cond.
PTFE
PTFE cond.
7 15 110 51
7 15 110 55
7 15 110 60
7 15 110 65
7 25 110 51
7 25 110 55
7 25 110 60
7 25 110 65
7 40 110 51
7 40 110 55
7 40 110 60
7 40 110 65
7 50 110 51
7 50 110 55
7 50 110 60
7 50 110 65
31 2 O-ring, side housing EPDM 9 20 631 72 9 20 631 72 9 33 632 72 9 33 632 72
32 2 Drain plug PTFE 2 15 023 60 2 15 023 60 2 40 023 60 2 40 023 60
33 4 Plug PTFE 7 15 022 60 7 15 022 60 7 40 022 60 7 40 022 60
R2 as R 1, but:
31 2 O-ring, side housing FEP/FKM 9 20 631 59 9 20 631 59 9 33 632 59 9 33 632 59
R3
as R 1, but:
32 2 Piston PTFE 2 15 024 60 2 15 024 60 2 40 024 60 2 40 024 60
35 2 Piston housing PE cond. 2 15 025 56 2 25 025 56 2 40 025 56 2 50 025 56
36 2 Piston cover PE cond. 2 15 026 55 2 15 026 55 2 40 026 55 2 40 026 55
37 4 O-ring, piston and piston cover NBR/EPDM 9 28 534 71 9 28 534 71 9 37 603 72 9 37 603 72
R4 as R 3, but:
31 2 O-ring, side housing FEP/FKM 9 20 631 59 9 20 631 59 9 33 632 59 9 33 632 59
R5 as R 1, but:
31 2 O-ring, side housing NBR 9 20 631 71 9 20 631 71 9 33 632 71 -
R6 as R 3, but:
31 2 O-ring, side housing NBR 9 20 631 71 9 20 631 71 9 33 632 71 -
Drainingsystem,
hand‐operated
(CodeR1/R2/R5)
Drainingsystem,
pneumatic
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