Humboldt Deluxe Series User manual

product manual
05.08
H-1390, H-1392, H-1394
Humboldt
Deluxe Water Baths

Introduction
Product Description
Humboldt Deluxe Water Baths provide Microprocessor-based temperature
control throughout the unit’s range from ambient to 180°F (82°C), with an
accuracy of ±0.1% of input span. All models are fully-insulated and models
H-1390 and H-1394 include a magnetic stirrer which assures constant water
temperature throughout bath. Model H-1392 does not have a magnetic
circulator. All units provide:
• auto-tuningisfast&effortless;
•dual,digitaldisplaysimultaneouslyshowssetpointand
processtemperature;
•ramp-to-setpointhandlescriticaltemperatureprocessessmoothly;
•setpointrangelimitingprotectsprocessandequipment;
•percentpowerlimitprotectscomponentsfromstress;
•rapidcyclingprovidesfastsystemresponse;
•operatorlockoutguardsagainstunwantedchanges,and
• allexposedpartsarestainlesssteel.Frontpaneliswaterand
corrosion resistant.
Models covered in manual include:
Deluxe Water Bath, 110V 60Hz— H-1390
Deluxe Water Bath, 220V 50/60Hz— H-1390.4F
Microprocessor-based temperature control for precise temperature control
throughout the range. Includes magnetic stirrer, ensuring constant water tem-
perature, and, a stainless steel shelf, which stands 2" (51mm) above the bottom
of the unit for free circulation of water above and below test samples. Volume is
7.76 gallons (29.40L) and dimensions are: ID: 19.5"L x 11.5"W x
8"D (495.3 x 292.1 x 203.2mm). Meets ASTM D6926. Shipping wt. 47 lbs.
(21.4kg)
Large Deluxe Water Bath, 110V 60Hz— H-1394
Large Deluxe Water Bath, 220V 50/60Hz— H-1394.4F
Same as H-1390, except volume is: 14 gallons (53L) and dimensions are 20"L
x20"Wx10"D(508x508x254mm).Shippingwt.74lbs.(33.5kg)
Water Bath, 110V 60Hz— H-1392
Water Bath, 220V 50/60Hz— H-1392.4F
Same as H-1390, except it does not have a magnetic stirrer.
Shippingwt.74lbs.(33.5kg)

Product Description
This product is intended for use only in accordance with the directions and
specifications contained in this User Guide. While Humboldt Deluxe Water
Baths can be used for many uses within labs, they were designed specifically
for use in providing a consistent temperature bath for storing asphalt Marshall
specimens in accordance with ASTM D6926, AASHTO T245 and British
Standard BS 598: Part 107. The control processor in all our water baths provides
a temperature range from ambient to 180°F (82°C) accurate to within 0.1% of
input span ±1°C.
Humboldt Water Baths are fully insulated to help maintain constant
temperatures easily. Models H-1390 and H-1392 can accommodate (12) 4"
diameter or (3) 6" diameter Marshall specimens at a time. And the model
H-1394 can accommodate (16) 4" and (9) 6" diameter Marshall specimens at
a time. All models include a stainless steel shelf, which supports specimens
while allowing 2" of free circulating water above and below specimens. Models
H-1390 and H-1394 also utilize a magnetic stirring bar to induce water flow
within the bath and ensure a uniform temperature is maintained. Model H-1392
does not have a magnetic stirring bar.
Initial Installation
Your Humboldt water bath was thoroughly inspected and tested prior to being
shipped and should be ready to operate once initial installation procedures
arecompleted.Tobegin,pleaseremoveallpackaging.Waterbathsare
packed,onetoabox,withthebath,shelf,stirringbarandglassstirrerplateall
individuallywrapped.Pleasemakesureyouremovethetapefromthestirring
barandglassstirrerplate.Inspectallcomponentsandmakesuretheyarefree
of any damage, which could have occurred during shipping. If shipping damage
is observed, please contact Humboldt or your local agent and file a claim with
any carriers involved.
You Humboldt water bath should be placed on a table or bench that is level.
Checkunitforpowerrequirementsandconnectthelinecordplugintoa
suitable electrical outlet.
Using the white stirring bar, locate the magnetic field, generated on the bottom
ofthewaterbathtank.Oncetheeldinlocated,placetheroundglassstirrer
plate over the field and place the stirring bar on top of the glass stirrer plate.
The stirring bar should spin in the middle of the glass, if not, shift the stirrer
plate position until the stirring bar is located in the center. ( See figure #1)

Figure #1
Once the spin bar and stirrer plate are in position, carefully place the shelf into
the unit without disrupting the placement of the spin bar.
Slowly fill the bath with water. The water level should be approximately 1" from
the top when specimens are placed in the bath.
Every Humboldt Deluxe Water Bath is calibrated to a certified thermometer to
ensure accurate temperatures during operation. In most cases you should not
need to recalibrate you water bath. However, if you need to access the controller
for calibration purposes, please contact Humboldt for step-by-step directions.
WARNING
DO NOT RUN UNIT DRY.
UNIT SHOULD NEVER BE USED WITH LESS THAN 2 INCHES OF WATER.
IF UNIT IS EMPTIED WHEN HOT, IMMEDIATELY REFILL WITH A MINIMUM
OF 2 INCHES OF WATER
NEVER USE FLAMMABLE LIQUIDS IN BATH
Figure #1

Operation
Once you have completed set-up and have filled the water bath with water. You
are ready to operate the bath. To turn the unit on, Push the POWER switch down
to turn it on. The heating indicator to the left of the POWER switch will illuminate
and show you the current temperature of the bath on top of the controller in red
and the current set point, on the bottom in green.
At this point you can also turn on the spin bar by pushing down on the STIR
switch.
Usethearrowsonthecontrollertosetthedesiredtemperatureyouwouldlike
to operate the bath at, i.e. the setpoint. The setpoint is the lower number, which
is in green. Humboldt Deluxe Water Baths are only capable of heating the bath,
there is no cooling function.
Once you have set the setpoint for the bath, the heating element will begin
to heat the bath. This will be indicated by a flashing light to the right of the
actual temperature reading, the top number on the controller. Once the bath
temperature has stabilized at the desired temperature, the heat pilot light will
cycle on and off as the thermostat calls the heaters to maintain that temperature.
Typical time to heat a bath from 70°F to 140°F is 1 hour.
Figure #2

Switching from °F to °C
Humboldt 120V Deluxe Water Baths come set to °F and 220V models come set
to °C for the controller. If you desire to change this setting, hold the two arrow
buttons in at the same time and hold for 5-10 seconds. The controller will switch
to this view, Figure #3:
Push the blue scroll button on the far left of the controller twice, which should
change the controller view to this, Figure #4:
Now you can use the arrows to toggle between °F and °C. Set the controller
to the desired choice and push the blue scroll button repeatedly until the unit
returns to the setpoint and current temperature view. Once there the blue
button will no longer change the display. This will set the temperature reading to
your desired view.
Figure #3
Figure #4

Power Cord
Your bath is fitted with a molded vinyl grounding plug. The cord is made of
three conductors: ( American color coding):
120V Models 220V Models
Green = Ground (Earth) Green = Ground (Earth)
White = Cold (neutral) Blue = Cold (neutral)
Black= Hot(Live) Brown= Hot(Live)
Fuse
All Humboldt water baths use a fast-blow fuse that is fitted into the left rear of
the machine. Water baths for 120V service use a 15 amp, Optifuse #FCA-15A
fuse. The Humboldt replacement part for this fuse is: H-2986.6.1.
Water baths for 220V service use a 7.5 amp, Optifuse #FCA-7.5A fuse. The
Humboldt replacement part for this fuse is: H-2986.6.2.
Maintenance
Waterbathscangenerallybemaintainedbykeepingthemcleanandproperly
filled.
WARNING
DO NOT RUN UNIT DRY.
UNIT SHOULD NEVER BE USED WITH LESS THAN 2 INCHES OF WATER.
IF UNIT IS EMPTIED WHEN HOT, IMMEDIATELY REFILL WITH A MINIMUM
OF 2 INCHES OF WATER
NEVER USE FLAMMABLE LIQUIDS IN BATH

www.humboldtmfg.com
HUMBOLDT
Testing Equipment for Construction Materials
Humboldt Mfg. Co.
3801 North 25th Avenue
SchillerPark,Illinois60176U.S.A.
U.S.A. Toll Free: 1.800.544.7220
Voice: 1.708.456.6300
Fax: [phone]
Email: [email protected]
Warranty
Humboldt Mfg. Co. warrants its products to be free from defects in material or
workmanship.TheexclusiveremedyforthiswarrantyisHumboldtMfg.Co.,
factory replacement of any part or parts of such product, for the warranty of this
product please refer to Humboldt Mfg. Co. catalog on Terms and Conditions
of Sale. The purchaser is responsible for the transportation charges. Humboldt
Mfg. Co. shall not be responsible under this warranty if the goods have been
improperly maintained, installed, operated or the goods have been altered or
modified so as to adversely affect the operation, use performance or durability
or so as to change their intended use. The Humboldt Mfg. Co. liability under
the warranty contained in this clause is limited to the repair or replacement of
defectivegoodsandmakinggood,defectiveworkmanship.