8
SUPPORT THE PUMP BY ITS ELECTRICAL CABLE !
Each pump must be treated as an individual unit as far as
cabling and overload protection is concerned. Individual cables
must be run up to each pump controller for proper protection.
Provide suitable protection for the cable rubbing against the
caisson. This is particularly important around the pump housing
of the upper pumps. PVC pipe or steel braiding may be in order
in extreme cases of tight clearances. Some have crimped (both
ends) stove pipe around the cable and pump (See Fig. 2).
Check valves in a clean system where no or small amounts of
solids are entrained, will not be troublesome. If they leak, no
harm will be done. It should be noted that substantial amounts
of solids will tend to block check valves after shutdown. If check
valves are placed in an “S” bend ABOVE the lowest point, solids
will drop out below the valve (See Fig. 3).
C-2.2) Series Connection of Dissimilar Pumps:
(Optional) In some cases where high heads and relatively
low-flow rates are desired at the most economic cost, two or
more different size pumps may be used.
IT IS VERY IMPORTANT THAT THE FLOW RATE
PRODUCED IS WITHIN THE CAPACITY OF THE
SMALLER PUMP, PUMP B.
If the system is flowing more
than the smaller pump can handle, i.e., greater than Q, the
smaller pump, Pump B, will actually retard the flow, and can
induce cavitation in Pump A. To predict the performance,
simply add the heads produced at a particular flow rate,
H<M>T = H<M>A + H<M>B. (See Fig. 4).
C-3) Liquid Level Controls:
(If Applicable)
Attach “ON” float to discharge hose or pump cable at desired
pump “ON” level. Attach “OFF” float to discharge hose or
pump cable at desired pump “OFF” level. The “OFF” float
must be below the “ON” float.
To attach the floats, thread the cable strap through the buckle
with the ratchet pawl, cinch up tight, thread excess strapping
through outer buckle slot. Be certain that the level controls
cannot hang up or foul in its swing. It is recommended that
the pump is completely submerged when the level control is
in the “Off” mode.
C-4) Galvanic Protection Kit:
(If Applicable)
For protection against Electrolytic action, whether in saltwater
or in other reactionary applications, the Galvanic Protection Kit
is a proven method for protecting the pump against corrosion
by using a Zinc Anode fitted to the pump. See page 29.
C-5) Electrical Cables:
WARNING! - All model pumps and control panels
must be properly grounded per THE NATIONAL
ELECTRIC CODE or CANADIAN ELECTRIC CODE
and STATE, PROVINCE and LOCAL CODES.
Improper grounding voids warranty.
FIGURE 2
FIGURE 3
FIGURE 4
Summary of Contents for PROSSER STANDARD-LINE 9-81000 Series
Page 5: ...5 inches mm MODEL A B 9 81000 27 38 696 24 00 610 9 81500 29 12 740 25 75 654 A B ...
Page 6: ...6 inches mm MODEL A B 9 82500 33 95 862 30 69 780 9 85000 36 68 932 33 69 856 A B ...
Page 14: ...14 FIGURE 9 ...
Page 19: ...19 FIGURE 14 PUMP SERIES 9 81000 9 81500 ...
Page 20: ...20 FIGURE 15 PUMP SERIES 9 81000 9 81500 ...
Page 23: ...23 FIGURE 16 PUMP SERIES 9 82500 9 85000 ...
