Vogt P-34AL-15, Руководство по обслуживанию

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P34AL-15 & P34ALOF-15 Service Manual
START-UP & OPERATION
9/22/05
5-6
6. Set the thaw gas pressure regulator (18R) and the suction regulator (if used). See “Thaw Gas
Regulator” and “Suction Regulator” for instructions.
7. When the suction pressure raises to 50-55 psig, any ice made should release and discharge.
After all of the ice clears the cutter and auger, turn the Hand/Auto switch to “Hand” and back to
“Auto”. This will interrupt the harvest cycle and start another freeze cycle. See “Freeze Cycle”.
As the machine continues its freezing cycle, the liquid ammonia will feed into the freezer until the
level float switch (10) is satisfied (flooded only). The float switch will open and close the liquid line
solenoid valve (20) to maintain that level of ammonia in the freezer during the freeze cycle. When
the freeze timer (1TR) times out the switch will close and initiate the harvest cycle. If a freezer
pressure switch (2PS) has been installed, the suction pressure will decrease to the setting of the
freezer pressure switch (2PS), the switch will close and initiate the harvest cycle. See “Harvest
Period”.
Be sure to observe several complete cycles of ice production to confirm the satisfactory operation of
the machine.
! IMPORTANT !
Complete the remaining part of the “Warranty/Registration Start-Up Report”
and return it to the Tube-Ice
! IMPORTANT !
Check the refrigerant level at the receiver liquid gage glass to make sure it is near the operating level
mark.
Adding Refrigerant. Add refrigerant while the machine is running by the following procedure:
1. With a cylinder of anhydrous ammonia laying on its side, cylinder valve outlet pointing up and
bottom end raised two inches higher than the valve end, connect an “approved for ammonia”
charging hose between the freezer charging valve (28) and the cylinder valve.
2. Purge all air from the charging hose and open the cylinder valve gradually to check for possible
leaks around the packing nut or hose fittings. Then open the cylinder valve fully.
3. While the “ammonia feed light is not illuminated, open the charging valve (28) and ammonia
will flow from the cylinder to the freezer.
4. Close the cylinder valve immediately when the ammonia feed light comes on and reopen it when
the light goes out. Repeat until properly charged.
! CAUTION !
Do not leave a refrigerant cylinder attached to the machine unattended.
Disconnect it immediately when the machine is charged or the cylinder is empty.
! CAUTION !