V' Packings (Packing Seal Item 5) - Acromet 3000 Series Manual

7.4

'V' Packings (Packing Seal Item 5)

Pump maintenance should only be carried out by authorised qualified
personnel with appropriate metering pump and system maintenance
experience.
The suction and discharge lines must be isolated and pipework de-
pressurised and drained of chemicals.
Procedure for replacing packing seals is as follows:
7.4.1 First isolate suction and discharge lines.
7.4.2 Disconnect suction and discharge pipe work from Pumping Head.
CAUTION If liquid is hazardous then all necessary precautions must be taken.
7.4.3 Slacken off Adjustment Cap (Item 9).
7.4.4 Remove Pumping Head securing bolts (Item 20) and gently slide off
pumping head.
7.4.5 Remove Adjustment Cap (Item 9) Follower (Item 8) Glad Spacer (Item 7)
Lantern Ring (Item 6) V-Packings (Item 5) and Necking bush (Item 4).
7.4.6 Discard damaged or worn V-Packing seals and thoroughly was and clean
all parts.
excessive wear or scoring. If excessive wear or scoring is evident, then
parts must be replaced.
7.4.7 Re-assemble in reverse order using new V-Packing Set.
NOTE V-Packings must face towards pressure (Product).
7.4.8 Adjust seal pressure via Adjustment Cap (Item 9). Correct adjustment is
critical and care must be taken not to over tighten.
Adjust as Follows:
(i)
(ii)
NOTE
(iii)
MP3000PR 001 to 010 Plunger PumpUpdated January 2017
Check plunger, gland spacer and necking bush for signs of
Rotate Adjustment Cap (Item (9) just sufficient to stop end float of
Packing Seal arrangement. (No pressure on seal).
Start up pump. Slowly adjust Cap (Item 9) until leakage stops.
Adjustment should be just sufficient to stop leakage.
Run pump and check for leakage re-adjust as necessary as seals bed
in.
Page 7
Series 3000PR