Vertiv Liebert Mini-Mate MT036 User Manual

WARNING! Risk of electric shock. Can cause injury or death. The DIP switches must be set
exactly as indicated in 9.4.3 on the previous page. Failure to correctly set the DIP switches may
result in an electrical or water hazard.
The DIP switch sets the capacity of the humidifier. If you replace the humidifier, set the DIP switches on
the circuit board based on the voltage and capacity of your unit shown in Table 9.3 below.
Voltage SW1 SW2 SW3 SW4 Amps
3-ton Units
208/230 Off On Off On 6.4
460 On On Off Off 3.4
4-ton and 5-ton Units
208 On On On Off 8.9
240 Off On On Off 8.5
460 On On On Off 4.5
575 On On Off Off 3.4
Table 9.3 DIP switch settings for humidifier control board
9.4.4 Humidifier Troubleshooting
Symptom Possible Cause Check or Remedy
Humidifier
does not
operate
DIP switch not set to
enable humidifier option
See DIP-switch settings in Table 9.3 above.
Display does not show
humidification mode
Increase humidity-control setpoint
Defective board
Check the voltage at P35-1 on the unit's iCOM board, and P1-9 and P1-7 on the
humidifier-interface board for 24VAC ±2VAC.
If no voltage is detected, check wiring and/or replace board. Check the wiring from the
iCOMboard to the humidifier-interface board.
Failed humidity sensor
Display shows "RET sensor invalid" warning. Check wiring from the
temperature/humidity board to the control board. Replace temperature/humidity
sensor if defective.
No water flow
Make sure that the switch is in "RUN" position. Check the humidifier water (including
filter screen) and check the nylon overflow line if the canister is full.
Canister fill rate does not
keep up with steam
output
Check the fill-valve screen opening and capillary tube for obstructions. Check the
water-supply pressure (minimum 10psig).
Table 9.4 Steam generating humidifier troubleshooting guide
9.5 Condensate-drain and Condensate-pump System Maintenance
9.5.1 Condensate Drain
Check for and clear obstructions in tubing during routine maintenance.
Vertiv | Liebert® Mini-Mate™ Installer/User Guide
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Vertiv Liebert Mini-Mate MT036 Specifications

General

Frequency	60 Hz
Cooling Capacity	36, 000 BTU/hr
Power Supply	208-230V, 1-phase, 50/60 Hz
Refrigerant	R410A
Airflow	1200 CFM
Humidity Range	20% to 80% RH, non-condensing