Chromalox MicroTherm, Руководство по установке и эксплуатации

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Damage to the pump and/or heater may occur
if the system is operated without fluid. Fill sys-
tem prior to starting. Operate in 105°F or less
surrounding temperature.
Note: Read and understand instructions on the
temperature control before operating the system.
1. Check to ensure the fluid is the same as or com-
patible with the fluid with which the system was
factory pretested. (Mobiltherm 603)
IMPORTANT: For disposal see fluid manufac-
turer’s recommendations .
2. The system is filled with heat transfer fluid directly
from the 55 gallon drum by simply connecting a
hose from the expansion tank (located on the top
of the system) to the drum. Fill expansion tank until
sight glass indicates it is approximately 1/3 full.
3. The overheat temperature control is located inside
the control panel. Setpoint should be adjusted
50°F higher than the indicating temperature con-
trol. WARNING: Never exceed a setting of
600°F on the overtemperature control.
4. Close control box door and turn circuit breaker on.
Start pump — do not be alarmed if the pump is
noisy during the initial start-up operation, this is
due to air in the system.
5. Bleed out all air by opening bleeder valves in the
customer’s piping. The pump should become quiet.
CAUTION: During the initial start-up operation,
the liquid level in the expansion tank must be
checked continually. This level should not ex-
ceed the three-quarter mark on the glass nor
drop below the one-quarter mark.
N ote: If abnormal fluid expansion is detected, this
is probably due to a pocket of air or steam still
present in the system. Check all bleed valves.
If problem continues, de-energize pump and check
bleed valves.
6. Set indicating or controlling thermostat at 220°F,
which will energize the heater. The heater is inter-
locked with the pump motor starter so that, in the
event of motor failure, the heating elements will
shut off automatically.
7. Run the system until 220°F is reached. Periodically
open the bleed valves in the customer’s piping to
remove air from the system. At 220°F any moisture
that has been trapped in the system will flash into
steam as it goes through the heater and can be
bled out through the bleed valves.
8. Excessive moisture and air in the system will cause
the heat transfer liquid to back up into the expan-
sion tank, thus evacuating the piping or process. If
this happens, shut the system down, bleed off the
steam and air allowing the liquid to return. If prob-
lem persists, drain the system and recharge with
new moisture-free heat transfer liquid.
9. After the system is completely free of air pockets
and moisture, set control thermostat at the desired
temperature. Never set temperature control above
550°F.
10. For detailed operation and tuning procedure on the
temperature control, consult instruction manual on
the temperature control.
BURN HAZARD. Operating systems at tem-
peratures above 140°F will create surface
temperatures on pipes that can cause burns.
Precautions should be taken to prevent opera-
tor contact with hot pipes. Also, bleed valves
should be locked down to prevent release of
hot fluid.
Note: This is a PID type controller and cycling of the
heat and cool can be expected below and above set-
point.
11. For system shutdown, lower the setpoint to 90°F or
lower (see Section 3). Allow the system to cool to
this temperature.
12. Press STOP to de-energize the pump and disable
the system.
13. Disconnect power to the unit.
ELECTRIC SHOCK AND BURN HAZARD. Do not
leave system unattended in a HOT electrical
condition. Do not leave system unattended
while HOT.
Manual Cooling
If manual cooling is on, heaters will be off and water
cooling will be on. Normally, manual cooling is off and
the temperature controller determines when to heat or
cool. Manual cooling is optional.
To use manual cooling:
1. Turn manual cooling on and observe temperature.
2. Optional. If at a safe temperature, you may stop the
pump until you are ready to run again. Important,
even if the pump is off, cooling water will run to the
heater as long as manual cooling is on and there is
electricity to the product.
3. When ready, turn pump on and turn manual cool-
ing off. The temperature controller will heat or cool
to the desired temperature. Important, even if elec-
tricity is turned off to the product, when electric-
ity is turned on, the temperature controller will go
back to the previous temperature before manual
cooling. If this is not desired, it is best to use the
temperature controller instead of manual cooling.
Section 4 – Operation