UltraViolet Devices MP22A User Manual

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Problem Possible 
Cause 
Corrective 
Action
No electrical power… 
Verify that the purifier is connected to a live power source. 
Ballast 
Disconnect the purifier from utility power. Replace lamp.
Lamp-out Protection
The purifier must remain disconnected from power for
(MP16A, MP22A & MP36C)
two (2) minutes to reset.
Cracked or broken 
Shut down purifier, drain, and replace quartz sleeve.
quartz sleeve…
See “Quartz Sleeve Cleaning or Replacement” in the
Maintenance” section.
Water leaking into/from 
Quartz sleeve sealing 
Shut down purifier, drain, and remove static gland nut,
purifier.
o-ring (s) worn, damaged… 
replace sealing o-ring. See “Quartz Sleeve Cleaning or
Replacement
” in the “Maintenance” section.  
Poor, or loose, connections 
Tighten suspect connection or fitting; or shut down
or fittings…
purifier, drain, and remove fitting or connection.
Clean threads; reapply thread sealing tape and reinstall.
Quartz sleeve fouled… 
Clean quartz sleeve, see “Quartz Sleeve Cleaning
or Replacement
” in the “Maintenance” section.
Sensor Probe, if equipped, 
Clean lens or Quartz Rod, see “Optional Ultraviolet 
lens fouled… 
Monitor Sensor Probe Cleaning” in the “Maintenance” 
section.
Poor purifier performance
Germicidal lamp output 
Replace lamp, as it nears its end of life (EOL). See
AND/OR Low UV intensity
depreciating… “Lamp Replacement” in the “Maintenance” section. 
(As indicated on Optional 
Germicidal lamp not
Replace lamp. See “Lamp Replacement” in the
Guardian
functioning… “Maintenance” section.
Ultraviolet Monitor).
Low input voltage… 
Verify input voltage to purifier.  
Change in water quality… 
Have water tested to confirm that it does not exceed 
maximum recommended concentration levels for use 
with this purifier.  
TROUBLESHOOTING
CAUTION:
Always disconnect power to the water purifier, before performing any service.
IMPORTANT: This unit is to be serviced ONLY by qualified, and appropriately licensed, personnel.
Table 3 - Troubleshooting
!
Purifier not operating.