JOHNSON CONTROLS
89
FORM 155.30-ICOM2.EN.UL
ISSUE DATE: 12/21/2018
5
SECTION 5 - COMMISSIONING
GENERAL GUIDELINES FOR USE
Before Operation
Charge the solution and the refrigerant water if the so-
lution and refrigerant water is in the barrels during the
delivery.
During commissioning, check the motor’s rotating
direction of the solution pump, refrigerant pump, and
purge pump:
The rotation direction can be tested by using a rotation
detector (Bell and Gosset or WILO DKG). If a rota-
tion detector is not available, use the procedure shown
below:
1. Remove the plugs at the solution and refrigerant
sampling valves.
2. Make sure the valves are completely closed.
3. Conrm that the absorber and refrigerant tank
contain enough solution and refrigerant.
4. Connect a compound gauge (NPT 1/2") to the
sampling valve with Teon tape.
5. Operate the pump.
6. Open the valve.
7. Read and record the delivery pressure of the solu-
tion pump and the refrigerant pump.
8. Close the valve.
9. Check the pressure readings. See Table 23 on
page 89 to see if your pump rotation is in the
right direction. The correct direction shows a
higher discharge pressure.
TABLE 23 - ROTARY PUMP ROTATION
CORRECTION ROTATION
Solution Circulation
Pump
14.5 to 29 PSIG
Solution Spray Pump -7.25 to -2.90 PSIG
Refrigerant Pump -11.6 to -2.90 PSIG
10. Remove the compound gauge.
11. Put the plugs back on the valves.
12. Clean the gauge with water.
13. For refrigerant, conrm the correct rotation by
looking at the refrigerant spray through the sight
glass.
After the completion of the equipment work (instal-
lation of the chiller, thermal insulation for cold/hot
surfaces, or other installation processes), operate the
chiller and measure the noise around the chiller unit.
The noise data of the chiller unit was measured in deci-
bels at the factory. See Figure 35 on page 80.
CAUTION: Do not run the solution pump
without solution. Do not run the refridger
-
ant pump without refrigerant water.
NOTE: The ow of uid cannot be seen
because the solution and refrigerant
pumps are hermetically sealed.
NOTE: The gauge's scale must be -760
mm Hg. to 2 Kg / cm
2
g, or -30" Hg. to 30
psig. To prevent corrosion of the gauge,
clean it thoroughly and check for leaks
after use.
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