Carrier 58DP - Manual (Page 9)

MANUAL ON/OFF
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ULATOR
USTMENT
MANUAL-
ON/OFF
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A78568
Fig. 13—Honeywell Model VR 800A
For continuing high performance, and to niinhnize possible
equipment failure, it is essential that periodic maintenance
be performed on this equipment. Consult your local Dealer
as to the proper frequency of maintenance and the availabil­
ity of a maintenance contract.
The abihty to properly perform maintenance on this equip­
ment requires certain mechanical skills and tools. If you do
not possess these, contact your Dealer for maintenance.
A WARNING
Turn off the gas and electrical supplies to the unit
before performing any medntenance or service it. FoUow
the rehghting instructions on the label attached to the
furnace. A failure to adhere to this warning can cause
personal injury.
The minimum maintenance that should be performed on the
equipment is as follows:
1. Check and clean or replace air filter each month or as
required.
2. Check blower motor and wheel for cleanliness and lubri­
cation each heating and cooUng season. Clean and
lubricate as necessary.
3. Check electrical connections for tightness and controls
for proper operation each heating season. Service as
necessary.
A WARNING
As with any mechanical equipment, personal injury can
result from sharp metal edges, etc.; therefore, be careful
when removing parts.
A. Air Filter
Each furnace accommodates two filters which can be
installed above the furnace in the return-air plenum. See
Fig. 12.
To clean or replace the filters, proceed as follows:
1. Disconnect electrical power before removing access
panel.
2. Remove upper access panel.
3. Reach up behind top plate, tilt filters toward center of
retum-air plenum, remove filters, and replace or clean
as needed.
REGULATOR
ADJUSTMENT
PILOT TUBE
CONNECTOR
MANIFOLD
PRESSURE TAP
A87230
Fig. 14—White Rodgers Model 36E
4. Some furnaces are equipped with permanent, washable
filters. Clean those filters as follows:
a. Clean with tap water.
b. Rinse and let dry. No oiling or coating of filters is
required.
c. Reinstall filters with cross-hatch binding facing
blower.
B. Blower Motor Wheel
Clean and lubricate as follows:
1. Remove upper access panel.
2. Loosen screw in vent pipe enclosure front and remove
vent enclosure front by sliding forward (toward front of
unit).
3. Disconnect vent pipe at first joint above unit and
swing vent pipe assembly to side, supported by suit­
able means (block of wood, etc.).
4. Shde vent pipe upward through rectangular opening in
top plate and remove vent pipe from furnace.
5. Remove four screws in vent pipe enclosure back, and
remove enclosure back by tilting top toward blower
and sliding bottom toward front of furnace.
6. Disconnect electrical leads from right side of motor
speed selector. Note location of wires for reassembly.
7. Remove screws holding blower assembly against
blower deck and shde blower assembly out of furnace.
8. Squeeze side tabs of motor speed selector and puU it
from blower housing.
V 4,
Fig. 15—Dual Blower With Left-Hand
Housing and Wheel Removed
A77007
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