Maintenance
1. Normal maintenance on all conditioners is generally lim-
ited to filter changes. Lubrication of the fan motor is not
required but may be performed to extend motor life. Use
SAE-20 nondetergent electric motor oil.
2. Filter changes are required at regular intervals. The time
period between changes will depend upon the project
requirements. Some applications such as motels pro-
duce a lot of lint from carpeting and linen changes, and
will require more frequent filter changes. It is suggested
that the filter be checked at 60-day intervals for the first
year until experience is acquired. If light cannot be seen
through the filter when held up to sunlight or a bright light,
it should be changed. A more critical standard may be
desirable.
3. The condensate drain pan should be checked annually
and cleaned and flushed as required.
4. Recording of performance measurements of volts, amps,
and water temperature differences (both heating and
cooling) is recommended. A comparison of logged data
with start-up and other annual data is useful as an indica-
tor of general equipment condition.
5. Periodic lockouts always are caused by air or water
problems. The lockout (shutdown) of the conditioner is a
normal protective result. Check for dirt in the water
system, water flow rates, water temperatures, airflow
rates (filter may be dirty), and air temperatures. If the
lockout occurs in the morning following a return from
night setback, entering air below machine limits may be
the cause.
©2006 McQuay International • www.mcquay.com • 800-432-1342
IM 407-16 (6-06)
®
Warranty
All McQuay equipment is sold pursuant to its standard terms and conditions of sale, including Limited Product
Warranty. Consult your local McQuay Representative for warranty details. Refer to Form
933-43285Y. To find your local McQuay Representative, go to www.mcquay.com.
This document contains the most current product information as of this printing. For the most up-to-date
product information, please go to
www.mcquay.com.
Products Manufactured in an ISO Certified Facility.