Stuart Turner CH 4-30 B Installation, Operation & Maintenance Instructions Manual page 17

'O'-Ring
Detail view of
'O'-Ring groove
in fitting point
6.15 Water scale: As water is heated scale deposits are released in areas of hard
water, scale can cause the mechanical seal to stick if left without use for long
periods. The pump must be run for at least 5 minutes every four weeks to
"exercise" all working parts. Run on cool water. See Section 7 - Technical
Specification for note on water temperature. This particularly applies to guest
bathrooms used infrequently.
6.16 Cleaners, Disinfectants and Descalents:
Fig. 14
Acid based descalents and aggressive cleaning agents must not
come into contact with the pump. The pump must be removed from
the system prior to the use of these products. The system should be
flushed to remove all chemicals before the pump is re-connected.
If in any doubt as to the suitability of the chemical solutions, please
contact our PumpAssist helpline on +44 (0) 800 31 969 80.
'O'-Ring
Fitting point
NOTE: Do not over tighten pressure vessel.
- 17 -
Model
CH 4-30 B
CH 4-40 B
CH 4-50 B
CH 4-60 B
Schrader valve
(under cap)
Pressure vessel
Note: This image is for
reference only
Air Charge
bar (psi)
1.3 (19)
1.8 (26.1)
2.8 (46.6)
Cont ...