Tadano TT-800XXL1, Service Manual

Page: 179 / 267

K-2 K-2
Air Conditioner
26
W701-0160E
10.2 How to charge air conditioner gas
Flow
No.
Procedure Safety point
Jigs and
tools
1 Plug the power supply cord of the main unit.
2 Connect the coupler of the high-pressure side (red hose) and the
low-pressure side with the compressor main body sequentially.
Purge residual pressure before connecting because the
connection of coupler becomes firm if there is residual pressure in
the unit.
(Usually it has been performed at work end. Refer to Flow No.16.)
Be careful to the
scaffold
3 Attach one freon can.
(Put the blind caps to the couplers which gas-can has not been
attached.)
Tighten as it is though the gas leaks a little when attaching. Be careful that gas
liquor does not splash
4 Set the time switch to the position of gas replenishment.
5 Turns the power switch to the manual side. (with 3 seconds
automatic air purge)
6 Start the engine.
- Engine speed: Idling
- Temperature control: Maximum cool
- Blower: Lo-Hi
Make sure to check
surroundings
7 Check the condition of bubble in the sight glass. (Check whether
the bubble disappears.) Make sure to check
surroundings
8 Turn OFF the power switch when the gas disappears from the
remainder gas sight glass of the main unit. Be careful to the
scaffold
9 Detach the empty gas can, and attach another gas can. Be careful that gas
liquor does not splash
10 Turns the power switch to the manual side. (with 3 seconds
automatic air purge)
- Repeat Flow No.7 until the bubble disappears.
(The charging amount should be 200g
±
50g after the bubble
disappears.)
11 Turn OFF the power switch when the gas disappears from the
remainder gas sight glass of the main unit.
12 Check the air-conditioning capability
Temperature control: : Maximum cool
Blower: : Hi
Engine speed : Approx. 2000 rpm
The blowing temperature must be in the graphic chart value.
(Refer to the graphic chart.)
(Near the outside air temperature scale in the gauge is a standard
pressure.)
13 Stop the engine Pull out the key
14 Wait for two minutes until pressure falls, and detach the
high-pressure side and low-pressure side quick couplers. Be careful to the
scaffold
15 Test gas leakage. (for all hose connections)
(Check the gas leakage from the lower side because the freon is
heavier than air.)
Compressor: 2 places
Compressor charge coupler: 2 places
Receiver: 2 places
Condenser Assy: 2 places
Main body of air conditioner: 2 places
Pressure switch hose connections : 1 place
11 places in total Be careful to the
scaffold Gas
leak
tester