ClimaCool UCA 20, Installation, Operation And Maintenance Manual

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What is Water Hammer?
ƒ–‡”Šƒ‡”‹•ƒ’Š‡‘‡‘–Šƒ– ƒ‘ —”‹ƪ—‹†
systems with long pipes. Water hammer is a rapid change
‘ˆ’”‡••—”‡ ƒ—•‡†„›ƒ”ƒ’‹† Šƒ‰‡‹˜‡Ž‘ ‹–›Ǥˆ–Š‡ƪ‘™
Šƒ•„‡‡ƒ„”—’–Ž›•Š—–‘ơ†‘™•–”‡ƒǡ–Š‡’”‡••—”‡‹–Š‡
entire system is raised very quickly.
What Causes Water Hammer?
Any action that can cause a rapid change in the velocity
‘ˆ–Š‡ƪ‘™ ƒ•‡–‘ơƒ™ƒ–‡”Šƒ‡”ǡ•— Šƒ• Ž‘•‹‰ƒ
downstream valve, pump stoppage, etc. Typically, for short
lengths of pipe (below 500 feet) downstream valves that
are closed within 1/10 of a second can generate
water hammer.
What Can Water Hammer Do?
”‡••—”‡•’‹‡•ˆ”‘™ƒ–‡”Šƒ‡” ƒ”ƒ‹•‡ƪ—‹†’”‡••—”‡•
to dangerously high values. These pressure spikes can cause
•‡”‹‘—•†ƒƒ‰‡–‘˜ƒŽ˜‡•ǡ’‹’‡•ǡ•–”ƒ‹‡”•ǡŒ‘‹–•ǡ‡– ǤŠ‡
CS strainer is rated to an absolute maximum pressure of 150
psi for bolted lid models, and 125 psi for clamped lid models.
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 Can I Do to Prevent Water Hammer?
There are certain precautions that can be taken to prevent
‘”†‡ ”‡ƒ•‡–Š‡‡ơ‡ –‘ˆ™ƒ–‡”Šƒ‡”ǤŠ‡ƒ††‹–‹‘‘ˆƒ
•—”‰‡–ƒ‘”ƒ ——Žƒ–‘”Ƥ––‡†™‹–Šƒ•—‹–ƒ„Ž‡’”‡••—”‡
relief valve strategically located within the water system
ƒ›’”‘˜‹†‡ƒ†‡“—ƒ–‡’”‘–‡ –‹‘ƒ‰ƒ‹•––Š‡‡ơ‡ –•ˆ”‘
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.
Stainless Steel Strainer Options
Automatic Timer Flush (ATF) Package Option
Š‡ ǦǦ͕Ǥ͙ƪ—•Š˜ƒŽ˜‡’ƒ ƒ‰‡’”‘˜‹†‡•ƒƒ—–‘ƒ–‹
‡–Š‘†ˆ‘”ƪ—•Š‹‰ƒ™ƒ›–Š‡†‡„”‹• ‘ŽŽ‡ –‡†‹–Š‡
strainer’s reservoir. The power supply and timer controls for
the valve package are housed inside the ATF control box.
Š‡ ‘–”‘Ž• ƒ„‡’”‡Ǧ’”‘‰”ƒ‡†–‘•‡––Š‡ƪ—•Š‹‰
†—”ƒ–‹‘ƒ†–Š‡–‹‡‹–‡”˜ƒŽ„‡–™‡‡ƪ—•Š‡•Ǥ
System Components
1.
Timer based valve controller: (see Figure 31) sets the
ƪ—•Š†—”ƒ–‹‘ȋŽ‡‰–Š‘ˆ–Š‡ƪ—•ŠȌƒ†–Š‡ƪ—•Š‹–‡”˜ƒŽ
ȋ–‹‡„‡–™‡‡ƪ—•Š‡•ȌǤ
2.
Electric Ball Valve: designed for dirty water use (see
Figures 31 and 32).
Figure 31 - Timer Based Valve Controller
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 32 - Electric Ball Valve
B
12VDC@2.5A 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
‹‰—”‡͛͛ǦƒŽ˜‡’‡ ‹Ƥ ƒ–‹‘•
ƒŽ˜‡’‡ ‹Ƥ ƒ–‹‘•ȋ‡‡ ‹‰—”‡͗͗Ȍ
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° F bi-directional rotation
G. Controller case
Stainless Steel Strainer Option