DETAILED METHOD OF PROCEDURE (MOP) FORM
For
Office:
Start Date/Time: TBD
Address:
Complete Date/Time: TBD
Engagement # :
General Description of Work: Major Inspection on UPS and Batteries
Risk (High, Medium, Low): High (There is a chance of loss of load if there is a commercial power failure
during the time the UPS system is in maintenance By-pass)
Service Impairment Hazards: By-pass is required to perform maintenance
Distribution: One Copy Each to: Site Contacts and DC Group Service Engineer
Responsibility for supervision of this job is assigned to the persons listed on the Emergency Call List.
This MOP has been prepared by: Zach Grube – Regional Account Manager, DC Group
The undersigned Representatives have reviewed this M.O.P. and here-by release it for implementation. This
review and release does not relieve the work performer of any responsibility or accountability for the
consequences of adhering to the M.O.P. The undersigned work performer agrees to abide by the terms of the
M.O.P. and prominently post a copy on the premises when the work is being performed. Changes not
specifically allowed by the M.O.P. shall not be made without the concurrence of the undersigned parties.
Site Contacts:
Work Performer:
Other:
DETAILED METHOD OF PROCEDURE (MOP) FORM
For
Notification of alarm center should appear on the Project Call-out list.
The Method of Procedure is as follows:
Step
No.
Procedure / Task (1)
1.
2.
Arrive at site and meet with site contact
(2)
(3)
(4)
Resp Party
Start
Time
Finish
Time
Plan
3.
Review MOP with on-site contact
________________________________________________________
Signature and Printed Name
Date
Proceed to
UPS unit
C/PM
C/PM
C
Serial Number: _ _
4.
5.
6.
Set up tools, equipment and materials necessary to perform work
7.
With UPS operating in normal condition, measure and record the following
parameters using a calibrated DMM and AC/DC ammeter:
Perform any necessary LO/TO procedures
Note the event history and battery voltages; Ensure there are no alarms or
anomalies present; If so, immediately advise on-site contact
C
C
C
C
Rectifier Input Voltage and current, Bypass Input Voltage
and current, Bypass Frequency, UPS Output Voltage and current, UPS Output
Frequency, Delta Voltages, Rectifier Ripple, and Battery Ripple
8.
9.
10.
11.
12.
13.
Compare the applicable front panel meter readings with the measured readings.
Note any deviation greater than 2%.
Check all Control and Status Annunciators. Note any abnormalities.
Observe Input/Inverter Output voltage/current waveforms. Record any
abnormalities. Measure total harmonic distortion, thd. (When applicable)
Place UPS in by-pass and open battery breaker; Transfer critical load (s); Verify
proper transfer of load
Inspect the electrical connections and components; Tighten as may be appropriate
Proceed to associated battery string (s)
Record
Battery Manufacturer:
_____________________________
C
C
C
C
C
C
Battery Model Number: _____________________________
Battery Date Code:
_____________________________
Number of strings: _______________ Batteries per string: _________
14.
Check and record DC Charging current flowing through each battery string, Check
and record AC ripple voltage of each string,
Check and record AC ripple current of each string
C
15.
Verify battery voltages and record; Check and record the voltage from
positive to ground as well as negative to ground.
Check and record ambient room temperature - _________ degrees
Visually inspect rack/cabinet and associated components and hardware
as well as connection of cells, covers, jars, seals, and vent caps for signs
of cracks, corrosion, leakage, dragon-tooth washers, frame ground and
anchors. If there are any leaks inform the site and take pictures. Clean
the leakage completely and as is appropriate.
Record milli-volt drop across shunt. Compare with the meter reading.
Ensure the shunt reading is correct. (When applicable)
C
16.
17.
18.
19.
20.
Perform internal voltage and conductance test
Verify battery rack grounding
C
C
C
C
21.
22.
23.
24.
25.
26.
27.
28.
29.
Vacuum and clean UPS interior and exterior.
Inspect air filters. Replace if necessary.
Retransfer load (s) to UPS; Test UPS to ensure proper
operation per OEM specifications
Record percent load (s)
Perform visual inspection to ensure there are no other
issues needing to be addressed; Ensure there are no
alarms or anomalies present
Perform any necessary LO/TO procedures
Clean up all tools, materials, and equipment
Advise on-site contact that work has been successfully
completed and/or advise there are additional issues needing
to be addressed
Sign out and return temporary visitor badge
C
C
C
C
C
C
C
C
Back Up Plan
1.
2.
Note
If there is any problem during preventive maintenance of
UPS unit or associated batteries, stop work and switch UPS
out of by-pass
Inform manager and on-site contact of issue and that UPS is
back online with load
C
N/A
N/A
C
N/A
N/A
If immediately prior to or during maintenance/repair,
there is severe weather forecasted for the area or being
experienced, work should be stopped immediately and
the UPS brought back on line
C/PM
End of MOP
(1) If appropriate indicate in the procedure / task column where the point of no return is
(2) Party Responsible for the task (C = Contractor; D&C = Design & Construction; N = Network; PM =
Property Management
(3) Indicate the time each task is scheduled to start
(4) Indicate the time each task is scheduled to complete