Trouble Shooting Aids; Door Blocking; Too Long Filling Time - Primus MB 90 Installation And Maintenance Manual

www.groupdynamics-laundry.com
sales@groupdynamics.lv

6. TROUBLE SHOOTING AIDS

6.1. DOOR BLOCKING

DESCRIPTION OF OUTER DOOR LOCK FUNCTION
– The door is closed by the hook closure with electro-pneumatic control. In case of power failure or
compressed air failure, the door remains closed.
– The door is moreover secured by the spring-pneumatic lock, even in case of failure state, e.g. in case of power
failure, compressed air failure, before or after the machine installation.
– Only emergency opening the door is possible, according to the following procedure:
EMERGENCY OPENING OF OUTER DOOR
WARNING !
!
BEFORE EMERGENCY OPENING THE DOOR, TURN OFF THE MAIN SWITCH OF THE MACHINE !
DO NOT OPEN THE DOOR WHILE THERE IS WATER IN THE DRUM !
DO NOT OPEN THE DOOR, IF THE WASHING BATH IS TOO HOT ! DANGER OF SCALD OR BURN !
DO NOT OPEN THE DOOR, UNTIL THE DRUM STOPS !
OPEN THE DOOR ONLY AT THE LOADING SIDE TO PREVENT CONTAMINATION OF THE CLEAN
SIDE OF LAUNDRY !
OPENING THE DOOR
– In case of power failure during operation, the part of compressed air remains closed in pneumatic system
and the door is still closed and locked. At first it is necessary to release compressed air from the circuit
of outer door lock.
– Remove the cabinet under the outer door on the loading side. Disconnect one supply of the plastic pneumatic
tube on the connector of shape T, fig.6.1.A.pos.1. Hereby the compressed air is blown away from the circuit
of outer door lock. Open the hook closure by pulling the piston rods from pneumatic cylinders.
– The door is still kept in secured position by the spring-pneumatic lock.
– Unlocking is executed as follows: push the safety bar of the lock by screw driver, fig.6.1.B.pos.1 to
unlocked position (get over the spring) and open the outer door slowly. The lock itself returns back to
secured position (by spring influence).
– Attention! When handling with outer door always avoid striking the door into the piston rod
of spring-pneumatic lock.
Fig.6.1.A. Air releasing
CLOSING THE DOOR
Connect supply of plastic pneumatic tube with T connector. Install the cabinet under the outer door. After
resettlement of power supply and compressed air supply, it is possible to close the outer door and continue
the washing cycle, see „User´s Manual".

6.2. TOO LONG FILLING TIME

Low water pressure:
– more machines are being filled up at the same time.
The inlet valve filter clogged:
513289 PUBLICATION DATE 07/04
Fig.6.1.B. Unlocking the door lock
INSTALLATION AND MAINTENANCE MANUAL 25