Owner`s manual

SYSTEM INSTALLATION AND SERVICE
AT AND 3T STEAMERS
4211-103 10-10-11
Page 10
SECTION 7: OPERATIONAL TEST After controls and slave generators are connected
After connecting the control, temperature sensor and slave generator(s) to the master generator:
1. Assure power and water are on.
2. Press the control’s ON/OFF switch. A light vibration should be felt in the control and the control’s display should light-up.
(see control instructions included with control kit)
3. Allow 10 minutes for the steam to start. The time to see steam start will vary depending on each generator’s power rating.
4. Once the steam starts, press the ON/OFF switch. The steam should stop; there shouldn’t be any water fl ow.
5. Press the ON/OFF switch.
6. Within one minute the units should again produce steam. The generators should call for water once every two minutes or more depending
on their power rating. It’s normal for the fl ow of steam out the steam head to slow for up to 10 seconds each time a unit calls for water.
7. The units will shut down automatically in 60 minutes. When the time runs out the steam will stop and there should not be any water fl ow.
8. If the units do not operate as described above, refer to SECTION 8: TROUBLESHOOTING GUIDE.
THE SYSTEM IS NOW READY FOR OPERATION.
SECTION 8: SERVICE
1. DESCRIPTION OF STEAM GENERATOR
The Printed Circuit Assembly (the “PCA”) provides the basic functions necessary to produce steam. The
PCA controls makeup water, provides a water level permissive for powering the elements and provides
raw DC power for the system. The PCA also provides regulated non-interruptible low voltage VDC power
for the T100 control and the temperature sensor. It also provides the interface circuitry between the control
and the PCA. The T100 control provides the room temperature control loop, an adjustable bath timer and
power switching for “soft steam”.
2. MAINTENANCE OF STEAM GENERATORS
- VISUAL INSPECTION - Whenever the generator is opened, inspect for any evidence of water leaks. I
nspect the wiring for any evidence of overheating. Check all electrical connections for tightness.
- FLUSH TANK - Flush monthly, or more often, depending on local water conditions.
- FLUSHING PROCEDURE:
1. The generator should be cool.
2. Press the ON/OFF button. The control should light.
3. Open the manual drain valve (if installed) and manually open the Autodrain valve by moving the lever
until it latches.
4. The unit will drain without heating the water.
5. Allow the water to run for a full 10 minutes, then press the ON/OFF button. The control should turn off.
6. Allow the unit to drain completely. When the water stops, close the drain valves.
3. REPAIR OF GENERATORS
A. ELEMENT REPLACEMENT: Disconnect power from the unit. Drain the tank. Remove the front and HEATING ELEMENT ACCESS covers. Note the wire con-
nections. (See diagrams 14 & 15) Remove the element wires. Using a hot water element socket, remove the element.
To install a new element, mount a new element gasket on the element. Clean the element port and add a light coat of Rectorseal No. 5 pipe thread compound
to the threads. Insert and hand tighten the element-gasket combination. Notice the element end orientation as shown in diagram. Tighten the element until the
orientation is the same as the diagram, ± 15°. The gasket should be set and tight but not deformed to a rounded or bulbous appearance. If the drain valve was
removed reinstall it. Reconnect the wiring. Test the unit per SECTION 7: OPERATIONAL TEST. Check for leaks at the element. Replace the front and HEATING
ELEMENT ACCESS covers. (Replace with factory supplied elements only)
B. PRINTED CIRCUIT REPLACEMENT: Printed circuit assembly (PCA) removal and replacement must be performed in the following
sequence, any other
method can damage the PCA. (See diagram 16-19)
Disconnect power from the unit. Note and tag the positions of all wires that plug into the printed circuit assembly mounted relays. Remove all the wires from the
relays. When removing these wires, pull on the connector, not the wire. Note the blue connected to the shortest of the triple pronged water level probe rods and
the black wire connected to the rod with black tubing. Disconnect all three wires from the water level probe. Remove PCA from all fi ve standoffs by pinching the
tops or removing the screws. When it is completely disconnected, it may be lifted out of the enclosure.
To install the board, reverse this procedure. The wire lugs must fi t tightly onto the relay tabs! Test the unit per SECTION 7: OPERATIONAL TEST.
Electrical shock hazard!
Disconnect all electrical power
before servicing the generator.
All wiring should be installed by a licensed
electrical contractor in accordance with
local and national codes.
For continued safe operation use factory
authorized replacement parts only.
IMPORTANT
The PCA’s contain static sensitive devices.
Static electricity may damage PCA’s.
Handle accordingly
The blue wire connected to MAX on the
PCA must be connected to the shortest
of the three level probes, the black
wire (MID) to the long probe with black
tubing and the white wire (MIN) connected
to the longest probe with white tubing.
WARNING