Tico Pro-Spotter, Service Manual

Page: 192 / 211

15-8 Service Manual
TICO Manufacturing
HEATING AND AIR CONDITIONING PRO-SPOTTER
7. When vacuum reaches specified level, close low side
and high side valves. Turn vacuum pump off.
8. If vacuum decreases more than specified amount in
5 minutes, there is a leak in the system.
9. Locate and repair leak. (See “R134a REFRIGERANT
LEAK TEST” on page 15-5.)
10. Start evacuation. Open low side and high side
valves.
11. Evacuate system for 30 minutes after initial specified
vacuum is reached.
12. Stop evacuation. Close low side and high side
valves.
13. Charge system. (See “Recharge R134a System” on
page 15-8.)
Recharge R134a System

CAUTION
1. Handle refrigerant safely. (See “R134a
REFRIGERANT HOSES AND TUBING” on
page 15-4.)
2. Park and prepare tractor for service. (See “Park
Tractor Safely” on page 1-3.)

CAUTION
IMPORTANT
Prevent possible air conditioning system damage.
Use correct refrigerant recovery, recycling, and
recharging stations. Do not mix refrigerant, hoses,
fittings, components, or refrigerant oils.
3. Connect refrigerant recovery, recycling, and
recharging station. (See “R134a REFRIGERANT
RECOVERY, RECYCLING, AND RECHARGING
STATION” on page 15-6.)
4. Evacuate system. (See “Evacuate R134a System” on
page 15-7.)
IMPORTANT
Before beginning to charge air conditioning system,
the following conditions must exist:
• Engine must be stopped.
• Pump must be capable of pulling at least 28.6 in
Hg vacuum (sea level).
• Adjust targeted vacuum if elevation is 300 m
(1000 ft) or more above sea level, if applicable.
Subtract 3.4 kPa (34 mbar) (1 in Hg) from 98 kPa
(980 mbar) (29 in Hg) for each 300 m (1000 ft)
elevation above sea level.
5. Follow manufacturer’s instructions and charge
system.
6. Add refrigerant until system is charged to
specification.
Specifications
Vacuum—Pressure at Sea Level 98 kPa
980 mbar
29 in Hg
Pressure Above Sea Level Subtract 3.4
kPa from 98
kPa for each
300 m
elevation.
Subtract 34
mbar from
980 mbar for
each 300 m
elevation.
Subtract 1 in
Hg from 29
in Hg for
each 1000 ft
elevation.
Specification
Leak Present—Decrease in Vacuum 3.4 kPa
34 mbar
1 in Hg
Prevent refrigerant from contacting eyes or skin.
Refrigerant will freeze eyes or skin on contact.
Wear goggles, gloves, and protective clothing.
Avoid possible injury from air conditioning
system refrigerant. Do not remove high-pressure
relief valve. Air conditioning system will
discharge rapidly.