Kidde Fire Systems ECS Manual page 110

6. Check the ambient temperature where the HFC-227ea cylinders are stored and record the
temperature.
7. Refer to the appropriate calibration charts (see Figure 5-2 through Figure 5-7) and locate
the level reading on the vertical axis (labeled Flexible Tape Reading). Trace horizontally to
the right to the appropriate temperature line. Read the weight of HFC-227ea from the scale
at the bottom of the chart. Record the weight and date on the record tag attached to the
cylinder.
8. After taking the reading, carefully push the tape down into the liquid level housing. Replace
the protective cap.
Note: If the weight measured by the liquid level indicator indicates the cylinder should be re-
charged, we recommend the cylinder first be removed from service and the weight loss
verified using a weigh scale before recharging.
All HFC-227ea cylinders must be filled or recharged by weight using a platform scale or
equivalent. If weight loss is more than 5% of the HFC-227ea charge, the unit must be
recharged.
06-236115-001
READING TAKEN AT TOP
EDGE OF FITTING
TAPE INSIDE
BRASS TUBE
HFC-227ea
LIQUID LEVEL
RETAINER - FLOAT RESTS
HERE WHEN CYLINER
IS EMPTY.
Figure 5-1. Liquid Level Indicator
CAP
GRADUATED TAPE
SHOWN IN MAGNETIC
INTERLOCK POSITION
READY TO TAKE
READING.
O-RING
BRASS TUBE
HFC-227ea
CYLINDER
MAGNETIC END OF
TAPE ENGAGES
IN MAGNETIC FIELD
OF FLOAT WHEN
TAPE IS PULLED
UP TO TAKE READING.
MAGNET EMBEDDED
IN FLOAT.
FLOAT - FLOATS ON SURFACE
OF LIQUID HFC-227ea
FREE TO MOVE UP OR DOWN
OUTSIDE OF BRASS TUBE.
5-7
Maintenance
October 2014