Trane LWHA Owner's manual

TRANE
®
TRANE
R
Installation
Operation
Maintenance
Belt Driven & Direct Drive
Low Height Air handler
(LWHA)
Model
LWHA
BC-SVX002-E4
(Sept 2011)

TRANE
®
i
General Information
Foreword
These instructions do not attempt to
cover all variations in systems, nor to
provide for every possible contingency
to be met in connection with
installation. Should further information
be desired or should particular
problems arise which are not
sufficiently covered for the purchaser's
purpose, the matter should be referred
to the manufacturer.
Warranty
Warranty is based on the general terms
and conditions of The Trane Company.
The warranty is void if the equipment
is repaired or modified without the
written approval of the manufacturer, if
the operating limits are exceeded or if
the control system or the electrical
wiring is modified. Damage due to
misuse, lack of maintenance or failure
to comply with the manufacturer's
instructions or recommendations are
not covered by the warranty obligation.
Reception
On arrival, inspect the unit before
signing the delivery note. Specify any
damage on the delivery note, and send
a registered letter of protest to the last
carrier of the goods within 72 hours of
delivery. Notify the local Trane Sales
Office at the same time.
The unit should be totally inspected
within 15 days of delivery. If any
concealed damage is discovered,
stop unpacking the shipment.
Notify the carrier immediately by phone
or any registered mail. Notify the local
Trane Sales Office. Conceal damage
must be reported within 15 days of
delivery. Check the unit nameplate to
confirm that the proper unit was
shipped. Available power supply must
be compatible with electrical
characteristics specified on
component nameplates.
Installation
This manual covers the installation,
operation and maintenance of the
Trane Chilled Water Blower coil Air
Handlers. LWHA is completely
designed to incorporate a single slab
coil assembly, improved application
flexibility, servicing and maintenance
accessibility and an improved
accessory line.
LWHAs are specially designed to meet
tight ceiling space requirement.
Note:
"Warnings" and "Cautions" appear at
appropriate places in this manual.
Your personal safety and the proper
operation of this machine require that
you follow them carefully. The
manufacturer assumes no liability for
installations or servicing performed by
unqualified personnel.
Handling
The unit will be supplied with a
shipping based and protective
packaging over the unit casing. The
packaging should be kept on the unit
during handling or storage on site.
If it is necessary to remove the
packaging for inspection prior to
completion of on site handling, retain
packaging parts and reapply them by
tapping in position to prevent damage
to the casing. The unit as supplied
has a shipping base which is suitable
for handling by a fork lift truck.

TRANE
®
Contents
Model Nomenclature
General Specification
Unit Installation
Dimension Data
Electrical Wiring Diagram
Operation / Start Up
Maintenance
Trouble Analysis
ii
1-2
3-4
5-8
9-12
13
14
15-17
18-20

TRANE
®
Low Height Ahu
Airflow Configuration
H = Horizontal Discharge
Development Sequence, A = First
Unit Models
013 033 053
023 043 063
Minor Design Sequence
E = Double Wall Unit
Installed Motor kW
Electrical rating / Utilization Range : Volt/Phase/Hz.
1 = 200V / 3PH / 50HZ
2 = 380 - 415V / 3PH / 50HZ
3 = 230V / 3PH / 60 Hz
4 = 380V / 3PH / 60 Hz
5 = 220-240 / 1PH / 50HZ
S = SPECIAL
Motor shaft diameter, (for belt driven only)
Motor pulley size
Fan Model
Fan shaft diameter, (for belt driven only,)
1
LWHA Model Nomenclature
Digit 1,2
Digit 3
Digit 4
Digit 5,6,7
Digit 8
Digit 9
Digit 10
Digit 11
Digit 12
Digit 13
Digit 14
L W
H
A
0 1 3
E
A
2
A
A
A
A
L W H A 0 1 3 E A 2 A A A A A 1 A 1 2 0 0 4 X L 2 X 0 0 0 E
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
X = None
For Direct
Drive
Code
Dia
KW
A
11
0.18
B
14
0.37
C
19
0.75
D
24
1.1/1.5
E
28
2.2/3
G=90
N=132
X=None
A=63
H=95
O=140
B=67
I=100
P=150
C=71
J=106
Q=160
D=75
K=112
R=170
E=80
L=118
S=180
F=85
M=125
T=190
Model Belt Driven Direct Driven
LWHA 013
LWHA 023
LWHA 033
LWHA 043
LWHA 053
LWHA 063
A=8/8 Single
B=9/7 Single
B=9/7 Single
C=9/7 Twin
D=10/8 Twin
D=10/8 Twin
E=KDD 9/7T 350W 4P-1 3SK
F=KDD 9/9T 550W 4P-1 3SK
G=KD2 9/7T 600W 4P-1 3SF
H=KD2 9/7 750W 4P-1 3SF
I=KD2 9/9 1550W 4P-1 3SF
Code Fan Model Model
B = 25
X = None
None (For DirectDrive Fan)
LWHA 013-063
Fan Motor Size (kW),
LWHA 013
LWHA 023
LWHA 033
LWHA 043
LWHA 053
LWHA 063
Low Static
A=0.18
B=0.37
B=0.37
C=0.75
D=1.1
E=1.5
Std.Static
B=0.37
C=0.75
C=0.75
D=1.1
E=1.5
F=2.2
High Static
C=0.75
D=1.1
D=1.1
E=1.5
F=2.2
G=3
For
Direct
Drive
K=0.35
L=0.55
M=0.6
N=0.75
Q=1.55
For Belt Drive
8-8 Single, 9/7 Single,9/7 Twin
10-8 Twin

TRANE
®
Fan pulley size
Number of Grooves
1 = 1 Groove 2 = 2 Grooves 3 = 3 Grooves X = None
Belt type
A = SPA B = SPB C = SPC Z = SPZ X = None
Belt length xxxx
Cooling Coil Row
4 = 4 Rows 6 = 6 Rows X = None
Heating Coil Row
X = None 1 = With Hot Water coil, 1 Row
Coil Connection
L = LH R = RH
Filter, Washable Type
2 = 2” Washable (STD) X = None
Electric Heater
X = None 1 = Yes
0 = Future Use
0 = Future Use
0 = Future Use
Service Indicator, E = Revised Fan Model
2
LWHA Model Nomenclature
Digit 15
Digit 16
Digit 17
Digit 18,19
20,21
Digit 22
Digit 23
Digit 24
Digit 25
Digit 26
Digit 27
Digit 28
Digit 29
Digit 30
A
1
A
1 2 0 0
4
X
L
2
X
0
0
0
E
L W H A 0 1 3 E A 2 A A A A A 1 A 1 2 0 0 4 X L 2 X 0 0 0 E
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30
G=90
N=132
X=None
A=63
H=95
O=140
B=67
I=100
P=150
C=71
J=106
Q=160
D=75
K=112
R=170
E=80
L=118
S=180
F=85
M=125
T=90

TRANE
®
General Specification -
LWHA-013 thru 063-EE
3
Model
Nominal Airflow at 2.55m/s(500ft/min)
Coil Face Velocity
Unit Dimensions
Unit Width Height Length
Basic Weight
Discharge Opening, W H
Coil CAP. Data
Chilled Water Coil
4 Row/144 Fin per Foot
Cooling Capacity
Water Flow Rate
Water Pressure Drop
Cooling Capacity
Water Flow Rate
Water Pressure Drop
Heating Capacity
Water Flow Rate
Water Pressure Drop
Chilled Water Coil
6 Row/144 Fin Per Foot
Hot Water Coil
1 Row/144 Fin per Foot
Fan Data (Belt Driven)
Fan Type
Fan Size
Ma RPM
Available ESP
Model Data (Belt Driven)
Motor Type
Motor Size - Low / Std / High Static
Electrical Rating / Utilization Range
FLA @ 400 Vac, 3Phase, 50Hz
LRA @ 400 Vac, 3Phase, 50Hz
Cooling (CHW) Coil Data
Coil - Width (Vertical Dim.)
Coil - Length (Horizontal Dim.)
Coil Face Area
Coil Rows
Fin Material
Tube Material / Size, OD
Header Material Size (Standard)
Header Material Size (Optional)
CFM
CMH
mm
kg
mm
MBH(KW)
GPM(L/S)
ft.wg(kPa)
MBH(KW)
GPM(L/S)
ft.wg(kPa)
MBH(KW)
GPM(L/S)
ft.wg(kPa)
kW
mm (inch)
mm (inch)
m2 (ft2)
Inch
Inch
Inch
LWHA 01
1076
1828
992 423 1008
100
265 233
38(11.15)
7.58(0.48)
10.52(31.4)
50(14.49)
9.85(0.62)
24.36(72.8)
23(6.85)
2.6(0.16)
0.42(1.3)
8/8
1750
0.18/0.37/0.75
0.7/1.2/2.0
2.5/5.0/10.4
254(10)
787.4(31)
0.2(2.15)
LWHA 02 LWHA 0 LWHA 04 LWHA 05 LWHA 06
1750
2973
1118 523 1008
120
240 270
63.5(18.62)
12.66(0.80)
15.91(47.6)
73(21.43)
14.57(0.92)
4.7(14.0)
39(11.48)
4.36(0.28)
0.64(1.9)
9/7
1750
0.37/0.75/1.1
1.2/2.0/2.5
5.0/10.4/14.6
355.6(14)
914.4(36)
0.33(3.5)
2042
3469
1271 523 1008
130
240 270
76(22.24)
15.12(0.95)
24.22(72.4)
88.5(25.95)
17.64(1.11)
7.31(21.8)
47(13.74)
5.22(0.33)
0.97(2.9)
9/7
1750
0.37/0.75/1.1
1.2/2.0/2.5
5.0/10.4/14.6
355.6(14)
1066.8(42)
0.38(4.08)
2625
4460
1578 523 1008
170
654 270
90(26.34)
17.91(1.13)
6.24(18.7)
118.5(34.75)
23.63(1.49)
14.62(43.7)
62(18.30)
6.95(0.44)
1.9(5.7)
9/7 Twin
1750
0.75/1.1/1.5
2.0/2.5/3.6
10.4/14.6/19.8
355.6(14)
1371.6(54)
0.49(5.25)
3188
5416
1578 588 1128
200
750 298
109(31.99)
21.75(1.37)
6.33(18.9)
144(42.20)
28.69(1.81)
14.79(44.2)
76(22.38)
8.5(0.54)
2.17(6.5)
10/8 Twin
1750
1.1/1.5/2.2
2.5/3.6/4.8
14.6/19.8/32
431.8(17)
1371.6(54)
0.59(6.375)
3838
6521
1858X588X1128
230
750X298
137(40.11)
27.27(1.72)
10.8(32.3)
177(51.96)
35.33(2.23)
24.51(73.3)
94(27.47)
10.43(0.66)
3.53(10.6)
10/8 Twin
1750
1.5/2.2/3.0
3.6/4.8/6.3
19.8/32/46.8
431.8(17)
1651(65)
0.71(7.67)
Centrifugal Forward - Curved Fan
5- -300Pa (0.2-1.2 wg)
3 Phase, 50/60Hz, 4 Poles, TEFC, Class F Insulation. IE1, Induction Motor
4 or 6 Rows
Aluminum
Cooper / 3/8 OD
MILD STEEL PIPE / 1-1/2 BSPT (E t.Thd.)
Cu Tube / 1-5/8 OD
400+/-6%, Vac, 3Phase, 50Hz

TRANE
®
4
General Specification -
LWHA-013 thru 063-EE

TRANE
®
DO NOT LIFT THE UNIT WITHOUT
TEST-LIFTING FOR BALANCE AND
RIGGING. DO NOT LIFT THE UNIT
ABOVE PERSONNEL. FAILURE TO
OBSERVE THESE WARNINGS MAY
RESULT IN PERSONAL INJURY,
DEATH OR EQUIPMENT DAMAGE.
WARNING
!
CHECK THAT THE SUPPORTING
STRUCTURE IS STRONG ENOUGH
TO SUPPORT UNIT WEIGHT.
WARNING
!
Unit Installation
5
Unit Location Recommen-
dations
When selecting and preparing of the
unit operating location, consider the
following:
1. LWHA shall be installed for hori-
zontal application only.
2. Available power supply must agree
with electrical data on unit
nameplate.
3. Consider the weight of the unit .
4. Allow sufficient space for the recom-
mended clearances. Refer to
Figure 1.
5. Installer must provide suspension
rods (threaded) for ceiling mounted
unit.
6. All unit must be installed level.
7. Coil piping and condensate drain
requirements must be considered.
Allow room for proper ductwork and
electrical connections. Support all
piping and ductwork independently
of unit to prevent excess noise and
vibration.
Lifting / Rigging Recom-
mendations
Before preparing the unit for lifting,
estimate the approximate center of
gravity for lifting safety. Because of
placement of internal components, the
unit weight may be unevenly
distributed, with more weight in the coil
area. Before hoisting unit into position,
be sure that a proper rigging method
is used, with straps or slings and
spreader bars for protection and safety
during lifting. Always test-lift the unit to
determine exact unit balance and
stability before hoisting it to the
installation location.
MOUNTING
Unit Suspension - Typical
If the unit will be suspended, use
suspension mouting kit to isolate the
unit from structure. This is usually
accomplished through the use of
spring or rubber type vibration
isolators. The units are designed to be
suspended from ceiling on threaded
rod size 3/8” or 1/2”(M12), furnished by
the installing contractor. Four external
mounting lugs are provided at bottom
of the unit. The false ceiling opening
must be large enough for future
maintenance.
pan. Refer to drain trap sketch in the
piping section.
4. Connect the ductwork to the unit.
Auxiliary Drain Pan
A field fabricated auxiliary drain pan
may be installed under the unit, and
when condensate overflow may cause
damage. This drain pan will eliminate
any excess condensation that may be
due to extreme humidity or an
obstructed drain in the primary drain
pan. Drain lines from this pan must be
installed, but should not be connected
to the primary drain line from the unit.
Isolate the auxiliary drain pan from both
the air handler and the structure.
Air Filters
LWHAs are shipped with 2” Washable
filters installed in the unit as standard.
For filter dimension and quantity, refer
to General Specification. Filter loading
method is sliding type and accessible
from both sides.
Duct Connections
The Inlet and Discharge air duct
connections to the unit should be
made with a flexible material
minimizing noise and vibration.
Typically, about 3 inches(75mm) is
needed for this connection to rigid
ductwork.
Duct turns and transitions must be
made carefully to minimize air friction
losses. Avoid sharp turns and use
splitters or turning vanes when elbows
are necessary. Discharge (supply)
ductwork should run in a straight line,
unchanged in size or direction, for at
least a distance of 1-1/2 fan diameters
(see General Specification, for fan
diameter).
The return duct should be sized to the
same dimensions as the return inlet
the return inlet of the unit.
All ductwork should be properly
insulated to prevet condensation and
heat loss.
To install unit complete the
following:
1. Determine the unit mounting hole
dimensions. Prepare the hanger
rod isolator assemblies (provided
by installing contractor) and install
them in the selected area. Threaded
rods are recommended for leveling
the unit.
2. Hoist the unit to the suspension rods
and attaché with washers and lock
nut. Refer to figure 2, for specific
mounting details.
3. Level the unit for proper coil drainage
and condensate removal from drain

TRANE
®
Unit Installation
6
Coil Connections
The water coils for LWHA units are of a
1-Row(Heating), 4-Row or 6-
Row(Cooling) design with high
efficiency Wavy 3BS aluminum fins and
3/8”(9.5mm) OD Copper tubes.
Proper installation and piping is
necessary to insure satisfactory coil
operation and prevent operational
damage. Water Inlet and Outlet
connections protrude through the
coil section side panel. Follow the
industry standard practices when
piping the coil.
Note the following:
1. Support all piping independently of
the coils.
2. Provide swing joints or flexible
fittings in all connections that are
adjacent heating coils in order to
absorb thermal expansion and
contraction strains.
3. When attaching piping to the coil
header, make the connection only
tight enough to prevent leaks, the
maximum recommended torque is
200ft-lbs.
4.Teflon tape or teflon piping
compound should not be used
because of its high lubricity, Teflon
makes it easier to tighten the pipe
to the hander joint past the point
where an effective seal is created,
thus damage to the coil could result.
5. “White Zinc” compound / pipe sealer
on all threaded connection is
recommended, instead.
Note: DRAIN AND VENT
CONNECTIONS ARE PROVIDED AS
STANDARD ON COIL HEADERS. IF
EXTENEDED DRAINS AND VENTS
ARE REQUIRED, THEY MUST BE
FIELD PROVIDED.
IMPORTANT
!
TO AVOID DAMAGING THE COIL
CONNECTION IT IS ESSENTIAL
TO GRIP THE PIPE CONNEC-
TION WHILST APPLYING
COUNTER PRESSURE TO
TIGHTEN THE JOINT (REFER TO
FIGURE 3) USE “BACK-UP
WRENCH” WHEN ATTACHING
PIPING TO COILS, ON
THERADED CONNECTIONS.
Condensate Drain Con-
nections
CAUTION
!
FAILURE TO PROVIDE ADEQUATE
CONDENSATE PIPING MAY RESULT
IN WATER DAMAGE TO THE
EQUIPMENT OR BUILDING. DRAIN
TRAPS MUST BE PRIMED. IF THEY
ARE NOT, THE TRAP IS ESSEN-
TIALLY NON-EXISTENT AND DRAIN
PAN WILL LIKE OVERFLOW.
The threaded condensate drain
connection is provided on the coil
section drain pan. Pitch the line
downward toward an open drain and
install a plugged Tee to facilitate
cleaning. Condensate lines should not
be connected to a closed drain. This
is to avoid the possibility of drawing
sewer gasses into the unit. Make sure
the drain pan connection opening is
unobstructed. Trap the drain line as
Electrical Connection
All electrical line sizing, protection and
grounding must comply with all
National Electric and local electrical
codes.
The contractor must also furnish an on/
off switching system, thermostat (if
controlled temperature is desired) and
fuse disconnect switch in compliance
with national/local electrical codes, if
not supplied by Trane. Refer to General
Specification, for electrical cha-
racteristics of motors.
CAUTION
!
USE COPPER CONDUCTORS
ONLY FOR TERMINAL CON-
NECTIONS. USE OF ALUMINIUM
OR OTHER TYPE OF WIRING MAY
RESULT IN GALVANIC CORROSION
OR OVERHEATING AND RE-
SULTANT EQUIPMENT DAMAGE.
WARNING
!
DISCONNECT ELECTRICAL
POWER SOURCE BEFORE
SERVICING THE UNIT OR
CONNECTION ELECTRICAL
WIRES. FAILURE TO DO SO MAY
RESULT IN PERSONAL INJURY OR
DEATH FROM ELECTRICAL SHOCK
OR ENTANGLEMENT IN MOVING
PARTS.
shown in Figure 4. Drain Connection
size is 1” BSPT for all units.
Figure 3
Typical Piping for Water Coil

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®
Unit Installation
7

TRANE
®
Unit Installation
8

TRANE
®
9
Dimension Data
Low Height Air Handling Unit
Double Wall - Direct Driven
LWHA 013/023 - LH Coil

TRANE
®
10
Dimension Data
Low Height Air Handling Unit
Double Wall - Direct Driven
LWHA 033/043/053 - LH Coil

TRANE
®
11
Dimension Data
Low Height Air Handling Unit
Double Wall - Belt Driven
LWHA 013/023/033 - LH Coil

TRANE
®
12
Dimension Data
Low Height Air Handling Unit
Double Wall - Belt Driven
LWHA 043/053/063 - LH Coil

TRANE
®
13
LWHA Electrical Wiring
Diagram
Below are the wiring diagrams for
LWHA.
Motors up to 2.2 kW or 3.0 HP are
suitable for Direct-On-Line starting.
Larger Motors are suitable for both
autotransformer and Star-Delta
starting.
Fan Motor Wiring Termination
(Three Terminal)
Fan Motor Wiring Termination
(Six Terminal)

TRANE
®
14
Operation / Start-Up
Pre-Start-Up Inspection
Perform the following checks and
inspections before operating the unit.
Inspection Checklist
a)Unit is mounted securely to the
ceiling support rods (mounting
units).
b)Ductwork connections are
complete, valve and piping have
thoroughly insulated.
c)Coil connections are complete
and tight.
d)Condensate drain pan
connections are complete and
tight.
e)Electrical connections
completed. Wiring is correct and
in accordance with the wiring
diagram. Ground connection
completed.
f)Check and retighten, if necessary
all the motor, fan pulley, fan
bearings and wheel.
g)Rotate fan by hand, to ensure that
is runs freely and that there is no
interference.
h)Check and retighten, if
necessary, drive and bearing
bolts, motor clamp plate bolts
and isolator bolt.
i)Check to ensure that pulley is
correctly aligned and that shaft
is parallel.
j)Check belt tension as per
instruction given in the
maintenance section.
Start-Up procedures
After completing all items under "Pre-
Start-Up", the unit may be started and
the following checks and adjustments
performed:
a)Bump start the motor to check
the direction of rotation. If the
rotation need to be changed,
stop the motor completely and
change the direction of rotation
by changing the line connection.
b)After connecting the load, the
motor should start quickly and
run smoothly. If it does not, the
power supply should be
switched off at once and all
connections, as well as the
power supply, should be re-
checked before re-starting.
c)In the event of excessive vibration
or unusual noises, the motor
should be disconnected from the
load and checked for poor
alignment, loose mounting bolts,
etc.
d)When the motor has been
operated under load for a short
period of time, check that the
operating current with the
nameplate current.
e)Measure the motor voltage and
amps on all phases to insure
proper operation.
Compare these reading with the
motor nameplate

TRANE
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15
Maintenance
Monthly Inspection
1.Check condition of air filters and
replace them if necessary.
2.Check the drain pan to be sure that it
is clean and free to carry the flow of
condensate through the drain line.
3.Check the coil surface for
cleanliness. Clean if necessary.
Yearly Inspection
1.Replace filters.
2.Check coil surface, clean by
vacuuming or flushing with cold
water. Do not use steam or hot water.
3.Carry out check (g) through (j) as
detailed in inspection checklist in the
Operation Section.
4.Inspect the condition of the fan belt
and replace if necessary.
The belts fitted to units cannot achive
design performance without the
correct tensioning.
5.Check condition of external vibration
isolators, replace if there is any sign
of wear, loosening or material
deterioration.
6.Check fan bearings for noisy
operation and excessive lubricant
leakage. Replace if necessary.
7.Inspect the condensate drain pan
and condensate piping to make sure
they are clear and will carry away all
water.
8.Inspect the control panel wiring to
make sure connections are tight and
insulation is intact.
9.Check system for water leaks.
Change / Clean Filters
Change or clean air filters at least twice
a year. Filters will require more
frequent care under high load
conditions or dirty air. A clogged air
filters reduces airflow, cooling capacity
and increases energy usage.
To clean washable filters, remove the
filter media and wash it in water to
remove dust, dirt and lint; allow to dry
thoroughly before re-installing in the
units. Do not rub or wring.
Washable filters can also be cleaned
by blowing with compressed air in
opposite direction of filter airflow.
Fan Belt Tension
Note: Fan belt tension should be
checked at least twice during the first
day of operation, since there is a rapid
decrease in tension until belts are run
in.
Proper belt tensioning is required to
ensure maximum bearing and drive
component life and is based on fan
brake horsepower requirement.
Belt Tension Measurement
Check the belt tension as follows:
Measure the span length mm of the
drive. With a belt tensioner at the
center of the span. apply a force K
(perpendicular to the span) large
enough to deflect the belt 15mm per 1
meter of span. Refer to figure 5.
The deflection force for the belt should
be within the minimum and maximum
force shown in the Table 1. When the
tension drops to the minimum value,
DEFLECTION = SPAN mm X 15/1000mm
readjust to the maximum value.
To measure belt tension, use a belt
tensioner as shown in Figure 6.
Determine actual deflection by
depressing one belt with the belt
tensioner and measuring the
deflection relative to the other belts or
to belt line. Adjust the belt tension to
the correct force (Newton) and tighten
all setscrews to the proper torques.
Figure 5
Belt Tension Measurement
Fan /Motor Bearing
IMPORTANT
!
THE MOTOR & FAN FURNISHED
WITH SHIELDED BEARINGS.THE
BEARINGS ARE PRE-LUBRI-
CATED FOR LIFE AND MAIN-
TERANCE FREE. REPLACE THE
BEARING IF DAMAGED/NOISY.
WARNING
!
WHEN INSTALLING OR
SERVICING THIS EQUIPMENT,
ALWAYS EXERCISE BASIC
SAFETY PRECAUTIONS TO
AVOID THE POSSIBILITY OF
ELECTRIC SHOCK THAT COULD
RESULT IN SEVERE PERSONAL
INJURY OR DEATH.

TRANE
®
16
Maintenance
Figure 6 Belt Tension Measurement
Table1: Deflection Force, K

TRANE
®
17
Maintenance
Maintenance Contract
Training
It is strongly recommended that you
sign a maintenance contract with your
local Service Agency. This contract
provides regular maintenance of your
installation by a specialist in our
equipment.
Regular maintenance ensures that any
malfunction is detected and corrected
in good time and minimizes the
possibility that serious damage will
occur. Finally, regular maintenance
ensures the maximum operating life
of your equipment. We would remind
you that failure to respect these
installation and maintenance
instructions might result in immediate
cancellation of the warranty.
The equipment described in this
manual is the result of many years of
research and continuous
development.
To assist you in obtaining the best use
of it, and maintaining it in perfect
operating condition over a long period
of time, the constructor have at your
sisposal a refrigeration and air
conditioning service school. The
principal aim of this is to give operators
and maintenance technicians a better
knowledge of the equipment they are
using, or that is under their charge.
Emphasis is particularly given to the
importance of periodic checks on the
unit operating parameters as well as
on preventative maintenance, which
reduces the cost of owning the unit by
avoiding serious and costly
breakdown.
Fan Belt Maintenance
Clean fan belts and pulleys with a dry
cloth. Oil and grease must be kept off
belts. The use of a belt dressing is not
recommended. When replacing belts,
use a matched set. Do not force belts
onto pulleys, but adjust motor position
to allow mounting and then re-tighten.
Sheave (Pulley) Alignment
To prevent interference of the fan frame
with the belt, make sure that the belt
edge closest to the motor has the
proper clearance from the fan frame,
as shown in Figure 7.
Align the fan and motor sheaves by
using a straightedge as shown in
Figure 8. The straightedge must be
long enough to span the distance
between the outside edges of the
sheaves.
When the sheaves are aligned, the
straightedge will touch both sheaves
at points A throught D.
CAUTION
!
DO NOT OVER-TENSION THE
BELTS. EXCESSIVE TENSION WILL
REDUCE FAN AND MOTOR
BEARING LIFE,ACCELERATE BELT
WEAR AND POSSIBLY CAUSE
SHAFT FAILURE. CLEAN THE
SHEAVES AND BELT WITH A DRY
CLOTH. OIL AND GREASE SHOULD
BE KEPT AWAY FROM THE BELT
BECAUSE THEY CAN CAUSE
DETERIORATION AND SLIPPAGE.
THE USE OF BELT DRESSING IS
NOT RECOMMENDED