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Ascend Single Phase Charger Operation Manual
8. MAINTENANCE
8.1. Preventive Maintenance
The ASCEND Series Charger is designed and manufactured to assure maximum reliability, flexibility,
serviceability, and performance.
To assure longer component life and trouble-free operation, minor preventive maintenance procedures
should be performed annually. More frequent inspection intervals are recommended for severe
operating conditions.
8.2. RecommendedMaintenance Procedures
Annual maintenance is adequate for environments that are relatively clean, and temperature controlled.
More severe conditions will warrant additional maintenance as needed.
1. Verify output voltage is within specifications.
2. Turn off all power to unit.
3. Ensure all cooling fans are operational, clean, and free of dust and debris.
4. During each service inspection, any accumulated dust, dirt, or foreign particles should be
carefully removed. Special care should be taken to avoid damage to controls and PCB's.
5. Inspect all wiring for loose connections, burnt, frayed or broken wires. Check for burned
semiconductor components and circuit boards.
6. Re-torque all high current connections and secure any loose connections. Refer to Torque
Specifications chart in this section.
NOTE: Information from P.A. Sturevant Co. & Snap-On Tool Co. & AMETEK Solidstate Controls part
vendors. Conversions: 12 in-lb = 1 ft-lb = 1.356 Nm
95-100167, Rev A
DANGEROUS HIGH VOLTAGE inside the enclosure
TO REDUCE RISK OF FIRE OR ELECTRIC SHOCK, do not attempt to open
enclosure or gain access to areas where you are not instructed to do so.
SERVICING IS TO BE DONE ONLY BY QUALIFIED SERVICE PERSONNEL
Table 5: Torque Specifications
Bolt
Mild Steel
in-lb ft-lb
#6
11
#8
20
#10
32
1/4"
5-6
5/16"
10-12 13.6-16.3
3/8"
16-20 21.7-27.1
1/2"
37-48
SAE 5
Nm
in-lb
ft-lb
1.2
2.3
3.6
6.8-8.1
9-10
12.2-13.6
14-18
19.0-24.4
25-31
34-42
50-65
37-74
50-100
48
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