Watson-Marlow 825 - Manual (Page 9)

Watson-Marlow 825 and 840 User Manual 9
13 SIP
Observe a 1m safety area to avoid possible scalding if a tube burst occurs. Monitor
the process continuously .
If a tube burst occurs shut down the process, do not touch the pumphead until a 10
minute cooling period has been observed. Ensure a 15 minute acclimatisation peri-
od is observed before running the pump following SIP.
Maximum permissible SIP process temperature is 135 C.
14 High pressure operation
Ensure rocker mechanisms are locked to avoid premature wear.
Observe a 1m safety area to avoid contact with high pressure jets in the case of
a tube burst.
Please note that only tubing elements and not continuous lengths of tubing can be
used for higher pressure operation.
No quick connectors are to be used with element tubing during high pressure
operation.
15 Tubing
No length of tubing which has previously been used as a pumping element should
be used in the transfer section due to the fact that it may be in a weakened condi-
tion.
16 Materials of construction
Description Material Finish
Pumphead body Aluminium Epoxy polyester powder coated white finish
Pumphead door Aluminium Epoxy polyester powder coated white finish
Pumphead rotor Aluminium Epoxy polyester powder coated
Rollers Stainless steel 316
Frame Stainless steel 304
Connectors Stainless steel 316
Door fixings High tensile steel
Motor fixings High tensile steel
Frame fixings Stainless steel
Rocker locking
knob, 840
Polypropylene
Rocker locking
knob, 825
Stainless steel
Ensure that the pumphead door is closed and tool-
locked before SIP cleaning