Steris SYSTEM 1E, Maintenance Manual

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5-13
764333-675
5.2.13 Concentration Monitor Failed (cont.) If the readings are more than five counts off on
either reading, re-calibrate as per maintenance
manual and re-verify readings. If the above
readings are correct, then the fault is mostly a failure
of the unit to drain completely. Troubleshoot a drain
problem remembering that the H. P. pump is
running during the drain portion of the diagnostic
to help remove water from the high pressure
transition block.
If the Concentration Monitor Test fails with the
following printout (MINIMUM value prints 0):
CONC. MONITOR FAILED
MINIMUM 0
SHOULD READ -3
It could be due to low conductivity water being
supplied to the unit such that the conductivity
differential requirements is not being satisfied.
5. H. P. Pump output low – check H. P. pump
operation.
5.2.14 MaxPure Filter Membrane Fault (a.
without numbers and b. with numbers)
Description
– a. (without numbers) The housing of the
MaxPure Filter is pressurized. The pressure must reach
>55 psi in three minutes or the alarm occurs. If this
portion passes, the housing pressure is maintained for
three minutes. After this three-minute stabilization
period, the pressure must be >52.83 psi or the alarm
occurs. If this portion passes the control waits
15 seconds and checks the housing of the MaxPure
Filter pressure again. The pressure must be >51.73 psi
and <58.75 psi or the alarm occurs.
Action:
1. Air leak – repair.
2. Faulty COMP1 – replace.
3. PT1 out of calibration – recalibrate.
4. PT1 – replace. (Refer to Figure 5-1 and 5-2.)
5. Faulty FLT1 – replace.
6. Faulty CK4 – replace.
7. Faulty CK6 – replace.
8. Faulty housing of the MaxPure Filter –
repair/replace.
9. Faulty CK11 – replace.
Description – b. (with numbers) A two-minute hold
test is performed. The pressure in the housing of the
MaxPure Filter is monitored for two minutes. During
this two-minute hold period, if the pressure drop
exceeds 4.4 psi, an alarm occurs. Three numbers are
printed; start pressure, finish pressure and the elapsed
time of the failure (seconds). Pressure prints are in psi.
Action:
1. Faulty FLT1– replace and rerun test.
2. Air leak – repair.
3. Faulty SOL8 – replace. (Refer to Figure 5-5.)
4. Faulty housing of the MaxPure Filter – replace.
5. PT1 out of calibration – recalibrate.
6. Faulty PT1 – replace. (Refer to Figure 5-1 and 5-2.)
7. Faulty CK11 – replace.
5.2 DIAGNOSTIC CYCLE FAULTS (CONTINUED)