Model 1011
Installation and Operation Manual
16
Par
t No
. 51
2083 Dra
wing No
. 1
29-0205a 03/09
Troubleshooting Procedures
Problem or Fault
Possible Causes
Corrective Action
Enclosure pressure control
regulator will not hold a safe
pressure.
Leakage around gasketing, covers,
seams, piping and tubing connections,
conduit connections and electrical
conduit seals of the enclosure.
Tighten enclosure latches: Where tightening is not
feasible, and gasketing materials are not practical,
holes or gaps can be closed with silicone sealant
applied from inside the protected enclosure.
Enclosure pressure indicator
reading is difficult to stabilize.
Insufficient enclosure leakage or opening
of the venturi orifice is crimped too small.
Remove the orifice, cut off the crimped end and
ream the tube, then recrimp and reinstall the tube
to note effect. As tube is shortened, reamed, and
recrimped, sensitivity decreases, allowing easier
adjustment of setpoint on the enclosure.
Enclosure pressure indicator
"drifts" up or down from the
"safe" pressure setting.
Application involves a small, tightly sealed
enclosure and/or a fluctuating protective
gas supply.
Pre-regulate the protective gas supply upstream of
the enclosure protection system to 5 psi maximum.
For dramatic fluctuations in the protective gas
supply, it may be neccessary to utilize a self-relieving
low flow precision regulator to pre-regulate the
protective gas supply.
Enclosure pressure loss
alarm switch does not appear
to be operating.
Pressure switch is out of calibration.
Calibrate by slowly adjusting counterclockwise to
decrease the setpoint, and clockwise to raise the
setpoint. (Do not attempt to calibrate the switch until
all efforts to make the switch respond properly have
failed)
Problems persists, or if the
system does not appear to
be operating properly.
Problems persist
Contact Fuchs Applications/Customer
Service Department at (330) 486-0002 for more
information.
This section covers the most common problems documented with this system. Any problems not covered in this section should be
addressed directly to our factory. Please address all service needs to:
Fuchs, Inc.
Customer Service Department
