Tuttnauer 2301006, Operation & Maintenance Manual

Page: 90 / 122

Page 85 of 117 pages
Symptoms
Possible causes check-ups and
tests
Corrections
13. Door not closing. 13.1 Low pressure at the air
supply line.
13.1 Set the air pressure.
13.2 Solenoid valve transmitting
air pressure to door cylinder
for lifting the door is stuck or
damaged.
13.2 Repair or replace the
solenoid.
13.3 Close Door button is
defective.
13.3 Replace the button.
13.4 Safety switch stuck or
damaged.
13.4 Fix or replace the
safety switch.
13.5 Control system trouble. 13.5 Replace the control
board.
14. Door locked but
chamber is not sealed. 14.1 Low pressure at the air
supply.
14.1 Set the air pressure.
14.2 Low steam pressure at the
door gasket.
14.2 Set the steam
pressure.
14.3 One of the two valves
pressure or vacuum to
gasket blocked or damaged.
14.3 Fix or replace the
pneumatic valve.
14.4 Solenoid valves pressure or
vacuum to gasket, blocked
or damaged.
14.4 Repair or replace the
solenoid valve.
14.5 Control system trouble. 14.5 Replace the control
boards.
15. Door not opening. 15.1 Low pressure at the air
supply line.
15.1 Set the correct air
pressure.
15.2 Insufficient vacuum to
gasket, due to trouble with
the vacuum system.
15.2 See par. 2.
15.3 Gasket improperly seated or
damaged.
15.3 Mount the gasket
correctly, or replace
it.
15.4 Solenoid valves operating
the two pneumatic valves,
pressure to gasket or
vacuum to gasket defective.
15.4 Repair or replace the
damaged solenoid
valve.
15.5 The vacuum to gasket valve
blocked or damaged.
15.5 Replace or repair the
damaged valve.
15.6 The solenoid valve which
transmits air pressure to the
door cylinder for lowering
the door is stuck or
damaged.
15.6 Replace or repair the
valve.
15.7 Control system trouble. 15.7 Replace control
boards.