Liebert Industrial Cooling Series

Liebert Industrial Cooling Series
Liebert Small System MCD and PFH Condensers
(1-5 Ton)
Warranty Inspection Check Sheet
The following information must be fully completed and forwarded to your local Liebert
sales office to establish your equipment warranty.
Installer______________________________ Address _______________________________
________________________________
________________________________
Owner______________________________ Address ________________________________
________________________________
________________________________
Owner e-mail address ___________________
Installation Date __________________
Was the unit received in good condition?
Yes
No
If no, has the carrier been notified?
Yes
No
Have the manuals been kept with unit?
Yes
No
PRE-START-UP
Condenser / Drycooler Serial Number: ____________________
Condenser / Drycooler Model Number: ____________________
Indoor Unit Serial Number: ____________________
Indoor Unit Model Number: ____________________
Compressor Serial Number: ______________________
Compressor Model Number: _______________________
Page 1 of 5
©2014 Emerson Electric Co. All rights reserved
PSWI-8542-411-RE
Rev. 3 10/2015
Liebert Small System MCD and PFH Condensers
(1-5 Ton)
Warranty Inspection Check Sheet
WARNING
Arc flash and electric shock hazard. Open all local and remote electric power
disconnect switches, verify with a voltmeter that power is off and wear personal
protective equipment per NFPA 70E before working within the electric control enclosure
or any hazardous voltage electric connection enclosure. Failure to comply can cause
serious injury or death.
With the electric power to the unit OFF check the following items as noted:
Is condenser at least 18” from any obstructions, walls, or adjacent units?
Field piping properly supported and secure.
All piping secured and isolated for vibration reduction.
Refrigerant lines pitched according to User Manual.
Field piping trapped according to User Manual.
Field piping properly sized according to the User Manual.
ALL electrical connections are tight and properly terminated on Evaporator and
Condenser.
Heat Rejection Interlock wiring has been correctly installed between Evaporator and
Condenser.
Equipment is installed level.
Remove all debris from unit area.
Condenser fan is secure, blade rotate freely with no obstructions.
All panels are securely fastened to unit?
Page 2 of 5
©2014 Emerson Electric Co. All rights reserved
PSWI-8542-411-RE
Rev.3 10/2015
Liebert Small System MCD and PFH Condensers
(1-5 Ton)
Warranty Inspection Check Sheet
Condenser Inspection
WARNING
Risk of electric shock, contact with high speed moving parts and hot surfaces, Can
cause serious injury or death. Use extreme caution when working inside the unit
cabinet of an energized unit near bare live hazardous voltage terminals, high speed
moving parts such as fan blades and hot surfaces such as motors, hot gas lines
1. Check voltage at disconnect and record.
L1-L2 ______
(If Applicable) L2-L3 ______
(If Applicable) L1-L3 ______
2. Close all local and remote electric power disconnect switches. Verify with a voltmeter that
power is on and the supply voltage matches the marked unit voltage rating.
WARNING
Arc flash and electric shock hazard. Wear personal protective equipment per NFPA 70E
before working within the electric control enclosure or any hazardous voltage electric
connection enclosure. Use extreme caution when checking the status of live hazardous
voltage circuits. Failure to comply can cause serious injury or death.

Check unit electrical phasing with a phase meter. If phasing is incorrect, change
wiring at input source to unit. Do not change any unit or component phasing.
Air Cooled Field Charge Verification
An integral sight glass is provided with the receiver to assist in field charge verification. During
charge verification set the control temperature down to keep the system running. If the system
is equipped with hot gas bypass, de-energize it by removing power from the hot gas solenoid
valve coil. When charge verification has been completed, replace and secure all wire
connections and covers.
During operation at design ambient conditions (95 or 105°F; 35 or 41°C) the charge level will
be above the sight glass in the receiver. If levels are below the sight glass an undercharge
condition is likely. If levels are above the sight glass and higher discharge pressures than
normal are observed an overcharge condition may be likely. However, verify that other high
discharge pressure causes such as dirty coil and restricted airflow are not responsible before
removing charge.
At temperatures below design ambient, refrigerant backs into the condenser coil and the level
in the receiver will drop below the sight glass. If you are trying to verify charge level at lower
ambient, block the condenser coil to maintain 230psig (1585kPa) discharge pressure to ensure
the head pressure control valve is closed. At these conditions the charge level should be
above the sight glass in the receiver.
Page 3 of 5
©2014 Emerson Electric Co. All rights reserved
PSWI-8542-411-RE
Rev.3 10/2015
Liebert Small System MCD and PFH Condensers
(1-5 Ton)
Warranty Inspection Check Sheet
Note:
The 5-ton high ambient, 5-ton Quiet-Line and 8-ton models consist of two condenser coils and
two receivers. When restricting airflow on these units, the coils should be blocked off
proportionally. If one coil is restricted significantly more than the other, liquid can remain in the
restricted coil causing lower levels in the receivers. The receiver liquid level should be above
the sight glasses in both receivers. There may be some variation in charge level between the
two receiver sight glasses due to piping and assembly variations. When adding charge,
determine which receiver level is lower and use that sight glass to gauge charge level.
Note:
If no level is visible in the sight glass, add charge until the level is in the middle of the sight glass.
Check the discharge pressure during this procedure and adjust coil restrictions to maintain 230
psig (1585 kPa). Once the charge is in the middle of the sight glass, add additional system
charge. After charging, unblock the coil and allow the unit to operate normally. After conditions
have stabilized, restrict the coil if required to maintain 230psig (1585kPa) discharge pressure
and verify that the charge level is above the sight glass.
Water/Glycol System Operation

If the head pressures recorded above equal 105°F condensing temperature, no
adjustment of the glycol/water regulating valve are required.

If the condensing temperatures are above 110°F, adjust the glycol/water regulating
valve to lower the head pressure. If the system has balancing valves in it, these valves
should be adjusted to the required GPM for this piece of equipment.

After the condensing temperature has been set up properly, the system should be
allowed to run for 10 to 15 minutes to obtain stable conditions.
Entering condenser water/glycol temperature __________
Leaving condenser water/glycol temperature ___________
After the refrigeration system is completely charged. Check and record the following.
3. Check compressor operating pressures and record.
Suction Pressure ____________
Discharge Pressure ____________
4. Check and record superheat (should be between (10-15°F) __________°F
5. Check and record the compressor amperage.
L1 __________
Page 4 of 5
L2 __________
(if Applicable) L3 __________
©2014 Emerson Electric Co. All rights reserved
PSWI-8542-411-RE
Rev.3 10/2015
Liebert Small System MCD and PFH Condensers
(1-5 Ton)
Warranty Inspection Check Sheet
6. Check and record amperage of compressor crankcase heater.
Compressor CCH __________
7. Check and record amperage to receiver heater.
Receiver Heater __________
8. Check condenser fan motor for proper rotation and record condenser fan amperage.
L1 __________
L2 __________
(If Applicable) L3 __________
Your start-up is now complete.
Your input is important to us. Did you encounter any factory or field issues? If YES,
please check the YES box and supply detailed description below. If NO, please check
the NO box; however please feel free to provide any additional comments or
suggestions.
YES
NO
Comments:
START-UP
PERFORMED BY _____________________________ START-UP DATE _______________
(Please print name)
COMPANY __________________________________ PHONE # ______________________
IMPORTANT:
This form must be properly completed and returned to your local Liebert Sales office. If
you do not know who your local Liebert sales office is, call 1-800-Liebert or check our
website at:
http://www.emersonnetworkpower.com/en-US/Brands/Liebert/Pages/default.aspx
Page 5 of 5
©2014 Emerson Electric Co. All rights reserved
PSWI-8542-411-RE
Rev.3 10/2015
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