The Routine Maintenance of HVAC Re-circulated Water System
Routing maintenance of HVAC re-circulated water system is recommended to
keep the system any kind of trouble free. Routine maintenance or preventive
maintenance determines the continuous services as well as ensure increasing the
life time of machinery.
Strainer Maintenance:
The
pan strainer should be removed and cleaned at least once a month or as often as
necessary to keep it clean.
Pan Maintenance:
The
pan should be flushed out quarterly or as often as necessary to keep down any
accumulation of dirt.
Maintain Water Make-Up:
The
float switch and valve should be checked at least once a month to make sure
that the recommended water level is correct.
The correct water level must vary according to model number. Recommended
water level should be found out from the manufacturer provided catalog.
Sponsored:
Sponsored:
Initial
starting time or after drain down the unit, the water system must be filled to
overflow. Overflow is above the normal
operating level and accommodates the volume of water normally in suspension and
in the water distribution system.
The
water level should always be above the strainer and pump suction. Check by running the pump with the fans off
and observing the water level through the access door. Maintain make-up water pressure within the
manufacturer prescribed value.
Pressurized Water Distribution Systems Maintenance:
Check
the water distribution system every month to ensure its operating properly. Check
the spray system with the pump on and the fans off. The diffuses are essentially non-clogging
and should rarely need cleaning or maintenance.
If
dirt or any foreign matter accumulated in water system or pan and system
strainer is not working properly then water diffuser may malfunction. The
nozzles can be cleared by using a small pointed probed and moving it rapidly
back and forth in the diffuser opening with the pumps running and the cooling
load and fans off.
If
the dirt or foreign matter occurs extremely, remove the end cap in each branch
to flush the debris from the header pipe.
The branches or header can be removed for cleaning. Check the strainer
condition and position; also check that the orientation of the water diffusers
is placed correctly.
Gravity Feed Water Distribution Systems Maintenance:
Cross-flow
cooling towers use a gravity-feed distribution system. Hot water is pumped into distribution pans
and is drained by gravity through a matrix of diffusers heads. The hot-water distribution pans and diffusers
are accessed from the top of the unit by sliding back the FRP pan cover. The top of the anti-vortex type diffuser can
be pulled off if necessary, allowing debris to be removed. The lower body of the diffuser can be removed
by turning and pulling.
Bleed-Off Valve Maintenance:
The
bleed-off valve may factory pre-fitted or installed at site, that’s not matter,
must be checked once a week. If not working properly, be sure may be cause scaling
or corrosion.
Pump and Pump Motor Maintenance:
The
pump and pump motor should be checked regularly, if necessary lubricated and
serviced in accordance with the pump manufacturer’s instructions as supplied
with the unit.
Sponsored:
Following
the “routine
maintenance of re-circulated water system” as per manufacturer’s
instruction, optimized performance and maximum efficiency might possible to get
from the re-circulated water system equipment.
No comments:
Post a Comment
WAZIPOINT:
Thank you very much to visit and valuable comments on this blog post. Keep in touch for next and new article. Share your friends and well-wisher, share your idea to worldwide.