41
RP DEVICE - INITIAL START UP
RP DEVICE
The reduced pressure principle device (RP) is required to
prevent contaminated water from backflowing upstream
to potable water. The unit provided in the Gaylord control
cabinet is manufactured by Watts Regulator Co.
1.
Initial Start-up
- To avoid water hammer or shock dam-
age perform the following initial start-up procedures:
A. Close the outlet hand valve.
B. Open the inlet hand valve slowly, fill the valve and bleed
the air through test cock number 2, 3, and 4.
C. When the valve is filled, open the hand valve slowly
and fill the remaining supply system. The initial start-up
procedure is now complete.
The reduced pressure principle device type backflow pre-
venter (Refer to illustrations on this page) consists of two
primary chambers with spring loaded check valves and a
secondary chamber with a spring loaded relief valve. This
device prevents backflow by opening and closing the check
valves if the pressure from the inlet side to the outlet side
of the device varies.
1. Intermittent Discharge
- Intermittent discharge of water
through the relief valve is fairly common and usually oc-
curs if there is inlet pressure fluctuations of more than 3
psi and when the solenoid valve closes after a wash cycle.
2. Continuous Discharge
- If there is continuous discharge
of water out the relief valve when the ventilator is not in
a wash cycle, do the following:
A. Leave the inlet hand valve open and close the outlet
hand valve. If there is still continuous discharge it indi-
cates that foreign material is preventing the first check
valve from closing. If flushing will not clear the unit, re
move and clean the first check valve.
B. If there is continuous discharge of water out of the relief
valve during a wash cycle, there is foreign material pre-
venting complete closing of the relief valve. Flushing the
relief valve may correct this condition.
Repeat procedure if necessary. If flushing does not stop dis-
charge with flow through the device, remove and clean relief
valve.
In no case should the relief valve outlet port be plugged,
closed off or restricted.
This device should be inspected occasionally for continual
discharge from the relief valve, which indicates a need for
maintenance. It is recommended that the RP device be
inspected and tested once a year.
NOTE
: Some regulations require annual inspection and
testing by a company certified to perform such duties.
See Instruction Manual IS-TK-DP, obtainable from your
Watts installer or distributor. For the name of your nearest in-
staller or distributor, call Watts Regulator at (978) 688-1811.
REDUCED PRESSURE PRINCIPLE DEVICE
BACKFLOW PREVENTER
REDUCED PRESSURE PRINCIPLE DEVICE
BACKFLOW PREVENTER
INLET HAND VALVE OUTLET HAND VALVE
Содержание ClearAir RSPC-ESP SERIES
Страница 9: ...9 TYPICAL INSTALLATION ...
Страница 46: ...46 PARTS DETERGENT PUMP 45 PARTS DETERGENT PUMP ...
Страница 53: ...53 C 6000 ESP INTERNAL WIRING DIAGRAM ...
Страница 56: ...56 RSPC ESP DRAIN ...
Страница 57: ...57 SPRAY ODOR WIRING ...
Страница 59: ...59 1 2 3 4 5 6 7 8 9 10 11 12 13 14 20 19 18 17 16 15 MODEL C 6000 ESP S SERIES CONTROL 1 3 TRANSFORMERS ...
Страница 61: ...61 1 2 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 MODEL C 6000 ESP S SERIES CONTROL 4 OR MORE TRANSFORMERS ...
Страница 68: ...INTENTIONALLY LEFT BLANK ...