Hale SMR - Manual (Page 7)

PROTECTION AGAINST FROST
As a precautionary measure, when frost is anticipated, drain all water from the pump
and its ancillaries.
Removing the drain plug from the base of the volute drains the pump. If the primer
exhaust is piped away to above the primer outlets, these must be provided with drain
valves.
If the water ring primer is fitted, removing the drain plug at the base of the water trap
housing drains it.
IMPORTANT:
It is essential to carry out the pump tests detailed in Section 13
whenever any part of the pump or priming system is dismantled.
This will ensure that reassembly has been carried out correctly
and that there are no leaks.
©Godiva, Warwick
September 2000
wsmaint-Issue2 25-9-02 7