Replacing diaphragms in a Micro Seiki rp-5070 air pump for rx-5000 turntable

[Juiced]

The rp-5070 i have is extremely noisy.




It uses a 'NISSO α-6000' air pump.
I've only found one website who apparently sales 'α-6000' diaphragms but it doesn't appear to be online.

ニッソー ポンプパーツα6000用（デルンダー・ポラリス）共用 AQ-53 【レヨンベールアクア】

www.rva.jp

The alternative is to buy diaphragms in Aliexperesss but i'm not sure what the exact size.

Did any one here replaced the diaphragms in a 'NISSO α-6000' air pump and know where or what to buy?

 

[DasguteOhr]

I would ask here, they will definitely know. It is the first address when it comes to micro seiki my opinion.

TOPCLASS

 

[Juiced]

Turns out switching the power setting to "Low" is still enough air being pushed to make the platter spin,
and now the pump is much quieter.

Not bad for 40yr pump

just had to remove that 40yr sellotape..



I already ordered the strong pump "made in japan" that can push up to 8Liter /Min,
but judging by the 'NISSO α-6000' specs, 1.5L/M is enough.

 

[bingewes]

I already ordered the strong pump "made in japan" that can push up to 8Liter /Min,
but judging by the 'NISSO α-6000' specs, 1.5L/M is enough.

View attachment 143016

How is your new pump? i am looking for pump for MS 1500 as well.

 

[microstrip]

I had success replacing the old Forsell pumps with Hiblow linear silent pumps - one good thing is that I could get them using Amazon.

https://www.hiblow-usa.com/product-finder/pressure-pumps/

As far as I could find HiBlow is the same company as Takatsuki , the company that manufactured the original Eminent Technology and Forsell air pumps.

 

[Juiced]

How is your new pump? i am looking for pump for MS 1500 as well.

it was too noisy.

i bought a new SSPP-2S for the rp-1090 and found a NOS α-6000 for the rp-5070

https://buyee.jp/item/yahoo/auction/1166396017?conversionType=YahooAuction_DirectSearch

https://buyee.jp/item/yahoo/auction/s1173445022

what pump are you using, rp-1090 or rp-1110?

 

[bingewes]

I had success replacing the old Forsell pumps with Hiblow linear silent pumps - one good thing is that I could get them using Amazon.

https://www.hiblow-usa.com/product-finder/pressure-pumps/

As far as I could find HiBlow is the same company as Takatsuki , the company that manufactured the original Eminent Technology and Forsell air pumps.

Thats good to hear, which one you got?

 

[bingewes]

it was too noisy.

i bought a new SSPP-2S for the rp-1090 and found a NOS α-6000 for the rp-5070

https://buyee.jp/item/yahoo/auction/1166396017?conversionType=YahooAuction_DirectSearch

https://buyee.jp/item/yahoo/auction/s1173445022

what pump are you using, rp-1090 or rp-1110?

Thats nice! Im using RP-1100 right now. The pump works fine but a bit noisy. That SSPP-2S looks great. Are you planning to place it inside your RP-1090?

 

[microstrip]

Thats good to hear, which one you got?

I got three HP-40 - separate pumps for platter, flywheel and tonearm, keeping the Forsell surge tanks and filters.

 

[Juiced]

Thats nice! Im using RP-1100 right now. The pump works fine but a bit noisy. That SSPP-2S looks great. Are you planning to place it inside your RP-1090?

There are two version of the RP-1100.

MICRO SEIKI RP 1110

MICRO RP 1110

Do you know which version you have?

"Replacement unit for SSPP-2S" for the RP-1100 version.1 will be perfect.



I've already replaced the original pump (SSPP-2) in the RP-1090 with a new SSPP-2S.
The suction hold down now is crazy! It pretty much flattens all records.

 

[bingewes]

Do you know which version you have?

Nicely done!! I got the first version if im not wrong.

Guess i can now refurbish the entire unit with the new pump.

 

[Johan K]

There are two version of the RP-1100.

MICRO SEIKI RP 1110

MICRO RP 1110

Do you know which version you have?

"Replacement unit for SSPP-2S" for the RP-1100 version.1 will be perfect.
View attachment 147461


I've already replaced the original pump (SSPP-2) in the RP-1090 with a new SSPP-2S.
The suction hold down now is crazy! It pretty much flattens all records.

Awesome !

/ Jk

 

[Juiced]

Nicely done!! I got the first version if im not wrong.

Guess i can now refurbish the entire unit with the new pump.

just remeber to re-seal with fresh silicon.