Maintenance; Troubleshooting - Delta AG812 Instruction Manual

Maintenance

Good maintenance is essential to the long life of your Delta AG812 Access Gate. Long, trouble
free operation is obtained by adhering to the following suggestions:
1. Check belt tension every 60 days to control Gate over travel. Consistent tension will
allow the gate to stop in the same position every time.
2. Adjust limit switches (See section above) for proper gate arm travel if extremes in
temperature are encountered. In cold weather, gearbox lubrication will stop arm travel in
a shorter time. Lengthening the travel may be necessary. Conversely, in summer, hot
temperatures may cause the gate arm to over travel the desired position. Shortening the
travel can compensate.
CAUTION: Do NOT attempt to adjust the limit switches with the power on. Power switch
must be placed in the 'OFF' position before adjustments are made.
1. Service the gearbox annually by draining old oil and refilling with clean Texaco
Vanguard oil or equivalent.
2. Tighten all nuts, bolts, and screws on the Gate assembly every 60 days or as
necessary.
3. Wash and wax the Gate cabinet exterior, once a quarter, or as necessary to maintain
the bright gloss finish of your Delta Gate.

Troubleshooting

If Gate fails to move:
1. Check Gate 'Power' switch. Switch must be in the 'ON' position.
2. Check thermal overload on motor. If overload is tripped, reset by pushing trip button. If
motor is hot, let it cool before trying to reset.
CAUTION: Power switch should be in the 'OFF' position when resetting the thermal trip
to prevent hands from being caught in the drive belt pulleys if motor should happen to
start on reset.
1. Check circuit breaker/disconnect feeding the Gate. Reset as necessary.
2. If there is power to the Gate (120/1/60 at terminal 1 and terminal 2):
A. Try switching the 'AUTO-MANUAL' switch to 'MANUAL'. The gate arm should go up. If
not, turn Power switch 'OFF' and disconnect Gate at the Main. Check all electrical
connections (terminals and screws) for tightness. If Gate still will not function when
power is restored, call factory for assistance.
Copyright 2013 Delta Scientific Corporation
All Rights Reserved
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Document A2021.6