Teledyne API M751H High Performance Zero Air Generator MAINTENANCE
07773A DCN6833 31
WARNING
EVEN THOUGH THE INSTRUMENT PANEL POWER SWITCH IS
OFF, THERE IS LINE VOLTAGE PRESENT AT THE POWER ENTRY
TERMINALS, POWER SWITCH TERMINALS AND ON THE
CONTROL BOARD. FOR ADDED SAFETY, REMOVE THE POWER
CORD FROM THE INSTRUMENT PANEL RECEPTACLE.
Before emptying the used charcoal, wearing a dust mask is recommended as a
preventive measure since it is possible that some charcoal dust may rise when
emptying and refilling the canister.
1. Turn off the 751H and wait for the pressure to go to zero.
2. Remove the 1/4” tubing connected to the top of the scrubber canister.
3. Release the fastening strap to free the can ister.
4. Remove the 1/4” tubing connected to the bottom of the canister.
5. Unscrew the cap of the canister.
6. Remove the pad from the top of the canister.
7. Pour out the charcoal and dispose of it properly.
8. Refill the canister with fresh charcoal, up to 3/8” to 1/4” from the top. Rap the
sides of the canister gently to settle the charcoal and add more as necessary.
9. Replace the pad on top of the charcoal.
10. Wipe any charcoal dust from the top edge of the canister. This is the surface
which seals against the gasket.
11. Check that the gasket is in place in the cap.
12. Replace the cap and tighten it “hand-tight”.
13. Reconnect the lower 1/4” tube connection.
14. Reattach the canister with the fastening strap.
15. Reconnect the upper 1/4” tube.
16. Enable “maintenance mode” (Section 5.2) which will bypass the dewpoint
warnings during scrubber drying.
17. After the compressor is turned on, it may be wise to check the scrubber for leaks
(see Section 5.11).