Carrier 39G handleiding
Handleiding
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13
9.12 Chilled Water and Hot Water Coil.
To vent the coils, proceed as follows :-
a) Close all coil water supply and return main
valves.
b) Open all vents but no more than 2 full turns.
c) If vent is clogged up with dirt it may be necessary
to remove needle valves from vents and clean
as necessary.
d) Open coil water supply and return valves. Fill
coil with water until all air is expelled. This
occurs when the hissing sound from the vent
stops and only water is oozing out from the vent.
e) Close vent needle valves.
10.4 To clean the coil, spray mild detergent solution
on the coils with garden type sprayer. Rinse with
fresh water. Check to ensure that the condensate
line is not clogged up.
10.5 Winter shutdown for chilled water coil, proceed
as follows :-
1) Anti freeze methods of coil protection.
a) Close coil water supply and return valves.
b) Drain coil as follows :
Method 1
“Break” flange of coupling at each header location,
separate flange or coupling connection to facilitate
coil drawing.
Method 2
It is recommended that the auxillary drain be
added to coil piping if yearly “Winterizing” of coils
is anticipated. This auxillary piping should be located
at the highest and lowest point on the respective
header connection for each coil. Hence, to drain
the coil, open both valves to the auxillary drain
piping.
c) After coil is drained, Method 1, connect line
with a service valve and union from upper
nozzle to an anti freeze reservoir. Connect a
self priming reversible pump between the low
header connection and the reservoir. Method
2, make connection to auxillary drain valves.
d) Fill reservoir with any inhibited anti-freeze
acceptable to local authority codes.
e) Open service valve and circulate solution for
15 minutes, then check its strength.
f) If solution is too weak, add more anti-freeze
until desired strength is reached, then circulate
solution through coil for 15 minutes or until
concentration is satisfactory.
g) Remove upper line from reservoir to reversible
pump. Drain coil to reservoir and close service
valve.
h) Break union and remove reservoir and it lines.
i) Leave coil flanges or coupling open and auxillary
drain valves open until spring.
10.6 Coil Removal
a) (Refer to Fig. 6 and 7) for service clearance area.
b) For chilled water coil, shut off the valves.
c) Disconnect the chilled water and condensate
piping.
d) Remove coil section panel (all screws are located
on the inside of the unit).
e) On header end, remove screws holding the
block off and the coil casing.
f) Slide coil and baffles out of unit.
g) Lift coil using hooks at the coil casing. Do not
lift by header or center of coil.
h) Reinsert coil by reversing order of procedures
listed.
i) Apply sealant as necessary to edges to ensure
air tightness.
9.13 Direct Expansion Coil
Charge refrigerant in accordance with the
recommendation as shown in the Installation
Operating and Maintenance instructions for the
condensing unit.
10.0 GUIDE TO SERVICING
10.1 Review the safety considerations at the beginning
of these instructions. Good safety habits are
important tools when performing servicing
procedures.
10.2 Use a strobe type tachometer or calculate as per
item 9.9.
10.3 To replace the fan motor, proceed as follows :-
a) Shut off the power of the motor.
b) Disconnect the tag power wires at motor
terminals.
c) Loosen motor brace-to-mounting rails attaching
bolts. Loosen belt tensioning bolts to adjust
the motor position so V-Belts can be removed
without stretching over grooves.
d) Mark belts as to position. Remove and set aside
belts, tag as necessary.
e) Remove motor to motor bracket hold down bolts.
f) Remove motor pulley and set aside.
g) Remove the motor.
h) Install the new motor. Re-assemble by reversing
steps a to f. Be sure to re-install multiple belts
in their original position. Use a new set if
required. Do not stretch belts over the pulleys.
Align belts as per item 7.3.
i) Re-connect motor leads and restore power.
Check fan proper rotation as described in
item 9.10 Start-Up procedure.
CAUTION
The venting procedure for hot water coil must be
done when the water is not heated up.
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Productinformatie
| Merk | Carrier |
| Model | 39G |
| Categorie | Niet gecategoriseerd |
| Taal | Nederlands |
| Grootte | 3661 MB |
