MRSTEAM CU Maintance Manual
MrSteam CU Series
Installation, Operating & Maintenance Manual
23
Operation
With all power disconnected at main switch, insure all electrical and
mechanical connections are tight before energizing unit to prevent electrical
problems and mechanical leaks.
1.
Turn on water and electrical supply, power and control voltage suppliers.Turn unit switch to ON position; Switch light
will go ON and water level will reach operating level automatically.
2.
When proper operating level is reached (approximately half way up the gauge glass), the heating element(s) will be
energized. In approximately 20 minutes, steam will begin to be produced.
3.
Adjust the F1 Plus operating temperature control to the desired steam room setting at the sensor
(range 100°F – 120° F). Operating temperature is at the discretion of the owner/operator.
For user comfort, the F1 Plus operating control is provided with an adjustable
temperature range. The F1 Plus control will cycle automatically to maintain
the room operating temperature selected by the owner/operator at the sensor at the set
point temperature.
4.
If not supplied with an automatic blowdown system, the generator must be blown manually down daily. An optional
automatic blowdown assembly is recommended for daily maintenance. The steambath generator should be blown
down manually in accordance with manual blowdown instructions below. See below.
Blowdown is an essential part of operation. It is an excellent preventative maintenance procedure and will prolong steambath generator operation. Insure the following recommended blowdown schedule is established and followed daily:
1.
If blowdown is conducted manually, at the end of each working day while unit is still operating,
turn ON/OFF s
witch to the "OFF" position and close water supply valve. De-energize wall-mounted safety switch.
Open blowdown valve(s) SLOWLY.
IMPORTANT:
Pressure may still be in the generator.
2.
Discharge is complete when gauge glass shows no water. Unit has been effectively drained. Follow this
procedure:
a. Fully close the blowdown valve
b. Fully open water supply
c. Put ON/OFF switch in the "ON" position
d. Close wall-mounted safety switch
3.
When re-filling is complete (water feed solenoid valve de-energizes and water is visible to half-way level in gauge
glass), turn off generator unless further operation is required.
4.
If you have been supplied with a manual reset low water control, as required by some states, the reset button on the
control must be reset before unit will begin developing pressure. Do not push r
eset until unit has filled with water.
5.
More frequent blowdowns may be required in area with hard water or excessive usage. Please consult with factory.
Automatic Blowdown Systems drain the steambath generator every 24 hours (or more often if required or desired). It
also turns the generator "ON" and "OFF". Blowdown occurs after the timer turns the generator off. The blowdown pilot
light is energized during blowdown.To set the timer, refer to instructions on inside of element access door.
Use of chemical cleaning compounds voids warranty.
To provide for safe and low temperature blowdown, and to comply with
National and local plumbing and building Codes, it may be necessary to blowdown into an ASME Code blowdown separator tank, or to take other precautions to prevent
damage to building drain plumbing. Consult with a licensed plumber.
Automatic Blowdown Instructions
Manual Blowdown Instructions
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CAUTION
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CAUTION
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CAUTION
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CAUTION
MrSteam CU Series
Installation, Operating & Maintenance Manual
24
Maintenance Instructions
To establish a good preventive maintenance program, we suggest that the site equipment foreman, engineer or
owner/operator familiarize themselves with these guidelines:
1. Daily blowdown
at max 5 PSIG operating pressure is recommended for best steambath generator
performance. In order to safeguard the heating element(s) within the steambath generator, the main wall
switch and the steambath generator switch shall both be placed in the OFF position
prior to blo
wing down
the generator. Blowdown instruction should then be followed as outlined in this manual. Do not use chemical
cleaning compounds in the steambath generator since the chemical agents may damage some of the generator
components.A daily blowdown will assist in prolonging product operation.
2.
Only after electric pow
er supplies have been disconnected at main disconnect switch,
a
monthly
inspection
should be made of all wiring. All electrical connections should be checked for tightness. A check
for steam and/or water leaks should be made and any loose fittings must be tightened immediately. Check heating
element flange bolts for tightness. Specific torque in 22 Ft. lbs. cold.
3. In hard water areas
, generators equipped with the McDonnell-Miller control (Models CU-2000 and
larger), should be checked for proper operation every four months or sooner. At the same time, a bottom
heating element should be removed and inspected. If scale has begun to form, all elements should be cleaned and
re-installed, using only new gaskets and bolts. The pressure control should also be removed to insure that the
bellows has not become clogged. (See trouble-shooting guide for instructions.) Check valves should be inspected
for leakage and proper operation.
4.
Generators equipped with level probes (Models CU 2000 - CU 1400) for maintaining operating water level and
probe for auxiliary low water cut-off protection need special consideration. In hard water areas, the probe
should be checked for chemical deposits and cleaned if necessary. This should be done every four months or
sooner. See the trouble-shooting manual for instructions.
Under an
y circumstances, only qualified service personnel should attempt the above
procedures. Always insure all electrical power supplies are disconnected at the main disconnect
switches to prevent electric shock. Always insure that pressure within steam generator is 0 PSIG (zero pressure)
whenever plumbing connections, including any factory-plumbed components, are being disconnected.
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CAUTION
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