COMMERCIAL STEAM GENERATOR
EXECUTIVE SERIES (ES) WITH AUTO POWER FLUSH
START UP PROCEDURE There is a boiler tank inside the steam generator that is equipped with
several heating elements. In the boiling (steaming) cycle, first the tank
fills up with water, then the heating elements will power up, and boils
the water. Therefore it is crucial to monitor the start up procedure as
follows in this section to make sure the heating elements do not energize
before filling the tank. After the boiling cycle finished (at the time which
is set by timer) the unit will go to cleaning cycle. In this cycle the unit
will be filled with pressured water and drained repeatedly for ½ hour.
1. Boiling (steaming) Cycle
Note: Make sure all solenoid coils are properly installed on all external valves
before proceeding with start up.
1. Turn on all water supplies and check for leaks.
2. Turn the timer that is mounted on the front of the unit to the OFF
position.
• For mechanical timer: Push the manual ON/OFF lever to OFF position.
• For digital timer: Press the ENTER (OVERRIDE) button and verify the
OFF sign shows up on the display.
3. Hook a clamp AMP Meter to L1 (red) and turn it on to monitor the
amperage during the start up cycle. Turn the
breaker and the Fuse
Disconnector Switch to the ON position.
4. The amperage is less than 1 Amp. Steam valves will open. Check all
steam valves for magnetic energy by using a
non-magnetized wrench,
screwdriver etc. and touching the top of each steam valve (where the clip
holds the
solenoid coil in place). If you feel a magnetic pull, the valves are
open.
5. The thermostat display will start flashing.
6. Turn the unit “ON” at the Timer.
• For mechanical timer: Push the manual ON/OFF lever to ON position.
• For digital timer: Press the ENTER (OVERRIDE) button and verify the ON
sign shows up on the display.
7. The amperage is less than 1 Amp.
8. You will hear a “click” sound inside the unit, which shows that water
inlet solenoid is energized. Water will immediately enter unit through
1/4" inlet line. You can verify it by touching the ¼” line to feel the water
flow. Depending on the water pressure, tank will fill within 2-5 minutes,
and then it will stop.
9. Caution: Up to this point the amperage must always stay less than 1
Amp. If you noticed amperage higher than 1
Amp, turn off the breaker
immediately and call the manufacturer for further assistance.
10. After 10 seconds, you will hear a bigger “click” sound that indicates the
contactors are engaged. The amperage will jump to the 1st stage or 2nd
stage value, depending on your control options. Read your work order
sheet to find the nominal current for your unit.
11. If you have optional controls such as 30-minute timer or in-room-touchtimer,
turn them ON to elevate to the 2nd stage. You will notice that the
amperage is even higher than the 1st stage.
12. Unit produces steam in 2 to 8 minutes depending on the kW of your
unit and the distance between the unit & steam room. Allow the unit to
produce steam for ½ hour and observe the temperature in the steam
room and compare it with your thermostat set up. See the operating
manual for further information.
TIMER CHECK (FOR 2 ROOMS UNITS ONLY)
To verify that the 30-minute timer or in-room-touch timer controls the
same room that is installed in, turn the timer in each room ON and OFF
separately and make sure it controls the steam in the same room, not
the other room.
2. Cleaning (Flush) Cycle
The cleaning cycle will start after the boiling cycle is finished according to
the daily schedule that is set to the 24h/7day timer. In this cycle the hot
water will be drained from the boiler through the drain valve. Then the
boiler will be filled through the water inlet and the power flush valves
and drained through the drain valve several times within ½ hour.
Observe this cycle for a ½ hour period and make sure that during this
cycle you will see the change (from open to close or vice versa) of the
following solenoid valves at least once:
1. Turn the 24h/7day timer OFF.
• For mechanical timer: Push the manual ON/OFF lever to OFF position.
• For digital timer: Press the ENTER (OVERRIDE) button and verify the
OFF sign shows up on the display.
2. The drain valve is draining the water from the tank. The first drain is hot
water and the other drains are cold water. You can check its function by
touching the 1” drain line to feel the water flow.
3. The water inlet valve on ¼” line is filling the tank. You can check its
function by touching the ¼” line to feel the water flow.
4. The power flush valve on ½” line is filling the tank. You can check its
function by touching the ½” line to feel the water flow.
5. (Only for 2Rooms) The steam valves on top of the unit get engaged and
disengaged. Use a non-magnetized wrench, screwdriver etc. and touch
the top of each steam valve (where the clip holds the solenoid coil in
place). If you feel a magnetic pull, the valves are open.
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