Parr Instrument 6400 - Manual (Page 79)

Troubleshooting
6400 11
w w w . p a r r i n s t . c o m 77
Bomb ID – Has Been Fired – Times Which Exceeds the Bomb
Service Interval.
The calorimeter controller keeps track of how many
times the bomb has been fired. When this count
exceeds a preset limit (usually 500) this message
will be issued each time the bomb is used for a test.
Perform bomb maintenance and reset counter on
Calibration Data and Control page for appropriate
bomb number.
You Have Exceeded the Run Data File Limit (1000 Files).
The memory set aside for test runs has been filled.
Use the memory management techniques to clear
out non-current tests.
Bomb EE Standard Deviation Warning.
The relative standard deviation for the calibration
runs in memory for the indicated bomb exceeds the
preset limit.
Sample Weight Warning.
The entered sample mass exceeds the value entered
via the Sample Weight Warning Above key on the
Data Entry Controls page. This warning threshold is
normally 2 grams.
The Lid has Failed to Lock or is not Closed Properly.
This error will be reported when the controller fails
to detect continuity through the bomb ignition cir-
cuit. The most probable cause will be either a poor
electrical connection between the bomb’s internal
electrodes and the fuse wire, carbon build up on
the electrodes or a fuse wire that has burned out.
This will also occur if the lid is not down before the
pretest or test is initiated.
The heater loop break limit has been detected. The heater
will now be shutdown.
This error means that the calorimeter is trying to
heat the water in the unit for an extended period of
time. When the heater and pump are initially turned
on the heater will be at 100% power until the jacket
temperature approaches 29.5 C. Once it gets close
the power being applied to the heater will be cut
back to avoid overshooting the target of 30 °C.
The calorimeter will turn off the heater and pump
if the heater is at 100% power for more than 10
minutes. If the jacket water is approximately 21 ºC or
less when the heater and pump is first turned on it
is not unusual to get this error. In this case clear the
error and restart the heater and pump. If the error
occurs again then there could be a problem.
• Check the 2040E Thermostat reset
• Check the water level in the calorimeter
Could Not Cool the Bomb Successfully.
The calorimeter has failed to establish the desired cool
down temperature within the time allowed. Check the
flow of cooling water to see that it is not restricted. It
may also be that the water is not cold enough.
Rinse Tank Level May Be Low.
The controller decrements the rinse tank counter
each time the bomb is rinsed. This message will be
issued when the counter is at or below zero when the
bomb rinse sequence is executed. This message is a
reminder that the rinse tank needs refilling, followed
by a manual resetting of the bomb rinse counter.
Note: To release the pressure inside the rinse
tank turn off the gas supply and open the gas
release lever. Gas will exhaust out of this
connection. Once the pressure has equalized
remove the lid to refill the rinse tank.