Altec AIR MHT Series, Руководство пользователя

Страница: 7 / 22

7
INITIAL RUN PROCEDURE
After start up and checks are complete and after the main electrical power to the dryer has been
connected, follow the procedure below to put the dryer in operation:
1. Turn ON the dryer ON/OFF switch.
2. Let the dryer run for 15 minutes.
IMPORTANT NOTE: All 230/460/575 VAC, 3 Phase motors MUST be wired for proper rotation.
After the air dryer is turned ON, the suction pressure should DECREASE (pull down) instantly. If
the suction pressure does not pull down TURN OFF THE AIR DRYER IMMEDIATELY and contact
your local distributor or Altec AIR for assistance
3. Check the Refrigerant Suction Pressure (on Gauge UA75/MHT40 and above):
R134a dryers. (28 psig to 34 psig)
R404a dryers. (72 psig to 80 psig)
4. Check the Refrigerant Discharge Pressure (on Gauge UA400/MHT200 and above):
R134a dryers. (90 psig to 150 psig)
R404a dryers. (220 psig to 350 psig)
5. Verify that the condenser fan motors are operating. On units UA400/MHT200 and above fan will cycle
ON and OFF as follows:
FAN 1 R404a dryers. (ON at 230 PSIG, OFF at 135 PSIG)
FAN 2 R404a dryers. (ON at 275 PSIG, OFF at 195 PSIG)
5. Allow compressed air to flow through the dryer.
6. Confirm that condensate is discharging from the condensate drain. This may take 30-60 minutes.
7. Make sure bypass valves are closed and 100% of the air from the compressor is flowing
through the dryer.
HOW TO SET THE CONDENSATE DRAIN OPEN &
CLOSED TIME (LOCATE DRAIN VALVE)
The OPEN (ON) time is adjustable from 0.5 sec to 10 sec. Drains are
set at factory to open for 6 sec. When drain opens the on light will light
The CLOSED (OFF) time is adjustable 0.5 min to 45 min. Drains are set
at factory to stay closed for 10 min. When drain is closed the off light
will light.
You may increase or decrease this based on moisture levels in the air.
Push the TEST button to manually open the drain valve.
TO CLEAN VALVE
1. Close isolation valve
2. Push the push to test button to release the
pressure
3. Remove strainer/filter and screen.
4. Clean screen and replace.