METRON QA-90, User & Service Manual

Page: 45 / 112

5-1
5. Control and Calibration
This chapter explains the QA-90 maintenance procedures, including
testing and calibration.
5.1 Required Test Equip-
ment
•
Power source with a range of 0 - 10 mA (Variref VF12).
•
Digital multimeter: Range 0 - 16 A.
•
Digital multimeter: Range 0 V and 500 V (HP34401 or similar).
•
Metron calibrating unit for earth protection, M
Ω
.
•
Metron calibrating unit for insulation resistance, M
Ω
.
•
Adjustable equipment with an effective output ranging from 0 to
16A for calibrating current consumption.
•
Test leads.
•
Insulated transformer.
5.2 Preparation and
Adjustments
1. Startup Preparation
a. Press MORE (F1) in MAIN MENU.
b. Press Test according to (F7) , and select UL 2601.1 .
c. Press Test Type (F6) , and select Rapid .
d. Press Test Mode (F5) , and select Manual .
e. Press START (F4) then press MORE (F1) twice to advance
to Manual Test Setup Window 3.
Equipment Code : ...> F7
Sequence Name : ...> F6
Class: CL1 ,0 leads in 0 modules.......> F5
MORE MEMORY SETUP START
F1 F2 F3 F4
IMPORTANT!
BEFORE TESTING
THE QA-90 MUST BE POWERED ON FOR AT LEAST 30 MINUTES
PRIOR TO CONDUCTING ANY TESTING.