Operating and Maintenance Manual
Scientek Washer Model SW-6000
Revision-3, Sept. 2007
3-2
•
The controller checks the state of the wash sump float switch. If it is in the closed (sump
full) position, then the controller proceeds to the next step. If it is in the open (sump not
full) position, then the fill solenoid is opened and fills the sump until the float switch
closes at which time the fill solenoid is closed. On units equipped with the
heat
exchanger option
, the water is preheated to 180
°
F (82
°
C) prior to entering the unit. On
units equipped with the
cold water prewash option
, a separate fill solenoid, attached to a
cold water line, is used to fill the unit. While the machine is filling, the
FILL
indicator
message is displayed. When the fill solenoid closes, the
FILL
indicator display is
extinguished.
WARNING: BURN HAZARD
•
Doors, washer interior and washed wares may be hot.
•
Hot water/steam may be sprayed through door opening if door is
opened too soon - press STOP button and wait until water flow stops
before opening door.
Wear gloves and face protection.
•
The recirculation wash pump is activated and the prewash water is pumped through the
piping, out the rotating arms and through the quicklock connection (if unit is so equipped)
to the quicklock cart. The
prewash counter
is also activated and the pump remains
energized until the counter times out. During the prewash, the Aqua-pulse control valves
sequentially turn on and off the flow of circulating water to the left and right side spray
arms, and (if so equipped) the quicklock connection.
•
When the prewash counter has completed its time, the
drain delay counter
is initiated.
During the drain delay, all the Aqua-pulse valves are left open and the water is allowed to
flow out of the spray arms back to the sump. At the end of the drain delay, the Aqua-
pulse valves are closed.
•
When the drain delay counter has completed its time, the
power drain counter
is
initiated. During the power drain, the drain line valve opens and the wash pump is
energized. This forces the bulk of the water from the sump to the drain.
WARNING: FALL HAZARD
To prevent falls, keep floors dry. Promptly clean up any spills or drippage.
•
When the power drain counter has reached its limit, the
gravity drain counter
is initiated.
During the gravity drain, the wash pump is deactivated, the drain valve remains open, and
(in units so equipped) the gravity drain valve is opened. This allows any residual water in
the sump, rotating spray arms and header to drain.
•
When the gravity drain counter has reached its limit, the
flush drain counter
is initiated.
During the flush drain, the drain line valve remains open and the fill solenoid is opened.
Scientek Technology Corporation
Tel: (604) 940-8084
7943A Progress Way, Delta, BC V4G 1A3
Fax: (604) 940-8085