MAC 10 Original VE5 SERVICE MANUAL
PAGE 15
VII. LIMITED WARRANTY
ENVIRCO CORPORATION (“ENVIRCO”) warrants the equipment will be free of defects
in materials and workmanship under normal use for a period of three (3) years. The
HEPA filter shall only be warranted against loading for a period of two (2) years when
operated in cleanroom conditions. ENVIRCO’s sole obligation under this warranty is to
repair or replace any parts of the equipment which are defective for a period of three
(3) years from the invoice date, provided that the repair or replacement is actually
performed within the three(3) year period from the invoice date. The buyer agrees to
assume any incidental expenses including but not limited to the cost of transporting the
defective equipment to ENVIRCO’s repair facility. The buyer’s sole remedy under this
limited warranty is the repair or replacement of any defective part of the equipment.
ENVIRCO
DISCLAIMS ANY IMPLIED WARRANTIES INCLUDING WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. In no event
shall ENVIRCO be liable for punitive, incidental, or consequential damages arising out
of this sale, including, but not limited to damage to persons or property, loss of use,
loss of time, inconvenience, equipment rental, loss of earnings or profit or any other
commercial loss. This warranty excludes certain expendable items such as light tubes,
prefilters, etc. ENVIRCO expressly disclaims and excludes from this warranty any
responsibility for equipment failures and/or defects attributable to improper
maintenance, abuse, accident or modification of the equipment (such as application of
an adjustable frequency drive).
X.
TESTING
Each MAC 10 VE5 filter unit is thoroughly tested at the factory before shipment.
However, because of the “rigors” of shipping, ENVIRCO encourages its re-test after
installation.
ENVIRCO recommends that the customer contact an independent organization, with
technicians trained and experienced in performance evaluation and maintenance of
clean air equipment.
Some of the testing procedures performed on the MAC 10 VE5 include PS challenge of
HEPA filters to assure specified performance, along with air velocity measurement and
adjustment tests.
Recommended Testing
All units that are airflow tested at Envirco are tested using a Shortridge
Airdata
Multimeter 800 series
with a Velgrid head. The recommended method of
reading is to place one corner of the Velgrid head 1-1/4” from the corner of the
filter face and then take four reading evenly spaced along the four foot side, then
repeat these reads for the other long side. This gives a total of eight reading to
test the unit. All advertised data is based on using the Velgrid with 8 readings
(128 velocity points). Envirco recognized the using 8 reading during a