ELECTRICAL STAGES OF THE MACHINE
All JET TECH high temperature washers operate in the same basic manner. Ensure that the proper electrical, water supply and drain connections have
been made, that the overflow tube (stand-pipe) is properly positioned in t he washtank and the machine is level.
1. Press the GREEN POWER BUTTON SWITCH (TL) and the POWER ON (LL) indicator light will illuminate as well as the digital temperature gauges
(TR) (if so equipped).
2. If the washtank is empty, the water inlet valve (ELB) will open and the washtank will start to fill through the rinse arms. The door switch (MP) is
bypassed and the fill cycle will continue even if the washer door is opened. NOTE: On models so equipped, the automatic drain pump (MPS) and/or the
liquid detergent pump (MPD), are energized at the same time as the water fill valve (ELB). The water level is controlled by an air trap in the washtank
and an air pressure switch (PS). As the water level increases, air pressure from the air trap is directed to the pressure switch (PS). When the preset
pressure is attained, the pressure switch transfers power from the fill valve (ELB) to the booster thermostat (TB).
3. If the rinse water temperature is below the preset level, the thermostat energizes the booster element (RB) (through coil (BCB), activating contactor
(CCB) on some models). When the proper rinse water temperature is attained, power is transferred to the wash tank thermostat (TV).
4. If the wash water temperature is below the preset level, the wash thermostat (TV) energizes the wash tank element (RV) (through coil (BCV)
activating contactor (CCV) on some models). When the proper wash water temperature is attained, power is transferred to the READY (LP) indicator
light. IMPORTANT: THE TWO ELEMENTS ARE NEVER ENERGIZED AT THE SAME TIME. THE BOOSTER ELEMENT ALWAYS HAS
PRIORITY OVER THE WASH TANK ELEMENT.
5. The READY (LP) light indicates that the temperatures are ideal for a wash cycle. It is normal for this light to cycle on and off as the elements maintain
the proper rinse and wash temperatures
6. Press the BLACK CYCLE START BUTTON (TC). This activates a micro relay (BR). This momentary relay energizes two internal micro switches
(CR1 & (CR2). When CR1 is closed, it bypasses the CYCLE SWITCH (TC), keeping the relay (BR) closed. CR2 energizes the timer motor (MT) and the
CYCLE INDICATOR LIGHT (LC) illuminates, starting the wash cycle.
7. As the timer motor (MT) starts to turn, the cam closes the first timer micro switch (Ml) and opens the circuit energizing the relay (BR). This new
connection bypasses the relay (BR) and keeping the timer motor (MT) and the CYCLE INDICATOR LIGHT (LC) energized. This micro switch stays
closed for the length of the wash cycle.
8. One or two seconds after the wash cycle is initiated, the second timer micro switch (M2) is closed. M2 energizes the wash pump(s) (MPL) (through
coil (BCMPL) activating contactor (CCMPL) on some models), starting the wash cycle.
9. At the end of the wash cycle, timer micro switch M 2 opens, stopping the wash pump (MPL), sending power to timer micro switch (M3). Micro switch
(M3) energizes the water inlet valve (ELB), starting the rinse cycle. NOTE: On models so equipped, the automatic drain pump (MPS) and/or the liquid
detergent pump (MPD), are energized at the same time as the water fill valve. (ELB). At the end of the rinse cycle, the water inlet valve (ELB) closes and
CYCLE INDICATOR LIGHT (LC) extinguishes.
Any of stages 2 through 5 may activate simultaneously during any of the wash cycle stages 6 through 9.
IMPORTANT NOTES:
• Models F-16 and F-16 DP feature an alternative warm water rinse. Activating the Black button on the front control panel bypasses the booster tank for
the final rinse and rinses using incoming water from the water inlet valve. • JET TECH ware washers do not dump and fill after every cycle. The wash
water is refreshed during every cycle by the hot rinse water. Excess stale water is expelled from the machine via the overflow pipe. • Some models are
equipped with an automatic drain pump (MPS)(White button on the front control panel) that will evacuate water to a maximum height of 36" (0.9M).
Please see the section on: DRAIN PUMP OPERATION.