ClimaCool UGW Manual - Manual (Page 57)

55
www.climacoolcorp.com
Stainless Steel Strainer Option
What Causes Water Hammer?
Any action that can cause a rapid change in the velocity
of the flow can set off a water hammer, such as closing a
downstream valve, pump stoppage, etc . Typically, for
short lengths of pipe (below 500 feet) downstream valves
that are closed within 1/10 th of a second can generate a
water hammer .
What Can Water Hammer Do?
Pressure spikes from water hammer can raise fluid pressures
to dangerously high values . These pressure spikes can cause
serious damage to valves, pipes, strainers, joints, etc . The
CS strainer is rated to an absolute maximum pressure of 150
psi for bolted lid models, and 125 psi for clamp lid modes .
A water hammer pressure spike that raises the pressure
higher than the maximum rated pressure may result in
strainer damage, voiding the manufacturer’s warranty .
What Prevents Water Hammer?
There are certain precautions that can be taken to prevent
or decrease the effect of water hammer. The addition of a
surge tank or accumulator fitted with a suitable pressure
relief valve and strategically located within the water
system may provide adequate protection against the
effects from water hammer. Careful attention should be
given to the design and control strategy for valves and
pumps so their actions do not invite a water hammer .
Automatic Timer Flush (ATF) Package Option
The ATF-EA-1.5 flush valve package provides an automatic
method for flushing away the debris collected in the
strainer’s reservoir . The power supply and timer controls for
the valve package are housed inside the ATF control box .
The ATF controls can be pre-programmed to set the flushing
duration and the time interval between flushes.
System Components
1. Timer based valve controller: (see Figure 22) sets the
flush duration (length of the flush) and the flush interval
(time between flushes).
2. Electric Ball Valve: designed for dirty water use (see
Figures 22 and 23) .
A
GREEN POINTER
INNER RING
(LENGTH OF FLUSH)
(FACTORY SET AT
8-SECONDS)
RED POINTER
OUTER RING
(TIME BETWEEN
FLUSHES)
(FACTORY SET AT
24-HOURS)
Figure 23
B
[email protected] POWER
FROM PDA OR 120V PLUG
IN TRANSFORMER
OPEN/CLOSE
INDICATOR
COVER-PLATE SCREWS
(4) IN CORNERS OF BOX
(TIMER BASED VALVE
CONTROLLER)
CONTROL SWITCH
Figure 24
Valve Specifications (See Figure 24)
A . Water-resistant polypropylene motor case
B . High torque motors with perma-lube gears
C . Open and close indicator
D . Stainless steel ball valve and hardware
E . Auto reset circuit breaker
F . 90
o bidirectional rotation
G . Controller case
Figure 22