Maintenance - York YMB Installation & Operation Manual

MOTOR
The blower motor should be cleaned annually and if it
has oiling ports, it should be oiled with a good grade
of SAE 20 oil. Normally a few drops of oil in each
bearing is sufficient.
COIL
The coil must be kept clean by any of the following
methods.
1. Cleaning with low-pressure compressed air.
2. Flushing or rinsing with water (a detergent is
advisable for greasy surfaces).
FILTERS
Clean or Replace Air Filters Regu-
larly
The intervals at which filters require replacement
depend on local conditions.
Because of dust and lint in the room, room-air filters
load up much more rapidly than outdoor-air filters.
Under normal conditions, the room air filter requires
replacement every six to eight weeks.
To ensure proper maintenance of the filters, it is best
to follow an organized maintenance procedure. The
following one is recommended:
P.O. Box 1592, York, Pennsylvania USA 17405-1592
Copyright © by York International Corporation 2004
Form 115.20-NOM4 (105)
New Release

MAINTENANCE

Divide the total number of units on the job into six
equal groups. Each week inspect, clean or replace
the filters in each group, in rotation. This insures
a uniform servicing interval. The interval may be
lengthened or shortened as determined by experience.
If inspection shows only the room-air filter to be dirty,
this one alone should be replaced.
CLEAN UNIT INTERIOR
Once a year clean the fans and coils of the unit thor-
oughly. Remove the access panel as necessary.
Wipe the interior of the unit clean with a rag. Wipe
the motor and inside and outside of the fan housings.
(In cooling units, clean out the drain pan.)
Tele. 800-861-1001
www.York.com
Dirty filters reduce the air and heat-
ing capacities of the Unit Ventilator.
When the filters are excessively dirty,
the unit heating capacity will be so re-
duced that it is ineffective for heating
the room. When a room fails to heat,
always check the filters.
Subject to change without notice. Printed in USA
ALL RIGHTS RESERVED