IMM AGS-2
77
4.
Coil cleaning can be required more frequently in areas with a high level of airborne particles.
5.
Be sure fan motors are electrically locked out.
6.
Replace the filter if pressure drop exceeds 20 psi.
7.
The weekly fan filter cleaning schedule can be modified to meet job conditions. It is important
that the filter allows full air flow.
Warranty Statement
Limited Warranty
McQuay’s written Limited Product Warranty, along with any extended warranty expressly purchased is
the only warranty. Consult your local McQuay Representative for warranty details. Refer to Form
430285Y. To find your local McQuay Representative, go to www.mcquay.com.
Service
CAUTION
1.
Service on this equipment must be performed by trained, experienced
refrigeration personnel familiar with equipment operation, maintenance, correct
servicing procedures, and the safety hazards inherent in this work. Causes for
repeated tripping of equipment protection controls must be investigated and
corrected.
2.
Anyone servicing this equipment must comply with EPA requirements regarding
refrigerant reclamation and venting.
DANGER
Disconnect all power before doing any service inside the unit to avoid bodily injury or
death. MULTIPLE POWER SOURCES CAN FEED THE UNIT.
Liquid Line Filter-Driers
Replace the filter-drier cores any time excessive pressure drop is read across the filter-drier
and/or when bubbles occur in the sight glass with normal subcooling. There is one, two-
core drier in each circuit. Models AGS 180 to 210 have economizers that incorporate an
additional filter-drier that should also be checked. The maximum recommended pressure
drop across the filter-drier is 7 psi at full load.
The filter-driers should also be changed if the moisture indicating liquid line sight glass
indicates excess moisture in the system, or an oil test indicates the presence of acid.
High acid cores may be used temporarily, but replaced after two day use.