Pack aging. 30, Cus tomer ser vice. 30, Sales / re pair fa cil ity. 30 – Bird Technologies 6091P Manuale d'uso
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Troubleshooting
Table 5 contains troubleshooting information for problems which can occur during
normal operation. Locate the problem, review the possible cause, and perform the
corrective action listed.
Bird Model 6091 Calorimeter
28
Symptom
Probable Causes
Corrective Action
Fan and pump will
not operate.
Blown power line fuses.
Voltage selector set to wrong voltage.
Faulty ac power cable.
Check power line fuse and replace if blown.
Reset voltage selector.
Repair or replace the cable.
Inaccurate RF
power measure-
ments.
Faulty RF power source.
Faulty RF power cable. Dirty RF in-
put or RF power cable connector.
Bent or Broken center pin in the RF
load resistor.
Low coolant level.
Coolant temperature not stable.
Unstable room temperature.
Check power source with another power meter.
Repair or replace faulty RF cable. Clean the
RF input and RF power cable connector.
Return unit to nearest authorized service cen-
ter.
Check level. If low, add coolant.
Run Calorimeter 30 minutes without RF power
input.
Stabilize room temperature to within ±5°C.
∆
T greater than
8.500°C
Excessive RF input power.
Air intake obstructed.
Coolant flow rate less than 0.284 li-
ter/min.
Reduce RF power.
Clean air filter element.
Replace the coolant filter.
Coolant flow rate
too low.
Low coolant level.
Blocked coolant filter.
Pump or analog controller PC board
faulty.
Fill coolant reservoir.
Replace coolant filter.
Return unit to the nearest authorized service
center.
High load resistor
VSWR.
Dirty input connector.
Bent or broken center pin in the RF
load resistor.
Damaged load resistor.
Clean input connector.
Return unit to the nearest authorized service
center.
Check load resistor. If damaged, return unit to
the nearest authorized service center.
No response to
GPIB controller.
Loose GPIB cable connection.
Calorimeter set to wrong address.
Incompatible terminator settings.
Connect the GPIB cable.
Check current address of calorimeter unit. If
address is incorrect, change the address.
Default terminator code is a carriage return
[CR] followed by a line feed [LF]. If necessary,
change the terminator settings.
Table 5
Troubleshooting