frequently asked questions

(Causes) 1) Lead pot alloy composition not ok
2) Improper controlling of Lead pot temperature
3) Strap and pole part cooling not ok.
4) Overage strap and pole parts use
5) Mishandling during burning process
6) Bad condition of Mould
(Causes) 1) Acid wash not done after pasting.
2) Higher moisture content paste used.
3) Low flash drying oven temperature.
4)Plates stacked tightly in racks.
(Causes) 1) Variation in Grid Panel weight.
2) Variation in Paste Density than specification.
3) Improper condition of Pasting Hooper.
4)Improper condition of Pasting Machine.
5) Pasting Machine setting problem.
(Causes) 1) Lead alloy composition not ok.
2) Improper Mould Temperature.
3) Poor cork powder spray on mould.
4)Improper surface of Grid Mould due to age
5) Mould closing mechanism is not proper.
(Causes) 1) Lead alloy composition not ok.
2) Improper Mould Temperature.
3) Mould water Cooling path chocked.
4) Improper Mould spraying.
5) Mould Air venting is not proper.
6)Machine speed higher than standard.
(Causes) 1) Internal Spark.
2) Higher Gas Generation.
3) Vent path chocked.
4) Gassing Space not maintained.
5) Material and Process of Plastic Moulding.
(Solutions) 1) Improper paste Density.
2) Improper curing of plates.
3) Loose Cell fitment.
4) Improper Side packing.
5) Design of Pasting Hopper.
(Solutions) 1) High Antimony percentage in Lead Alloy for grid casting
2) Design the Battery in such a way to accommodate more quantity of acid on top of the plates
3) Over charging of Battery
(Solutions) 1) Poor inter cell welding.
2) Poor group burning.
3) Active material sheading.
4) Iron & Chloride contamination
5) Micro Short
Cause :-
1) Lead Run during Group Burning
2) Lead Run During Pole Burning
3) PE- Separator misalignment
4) PE- Separator Puncher
5) Improper cleaning of Paste on Lug and Plate’s side
6) Separator Height overlapping by 8 to 10 mm
Causes: -
1) Loose wire Connection
2) Improper Pole Burning
3)Highly Oxidised
4)Pole crack
5) Terminal crack
(Causes: -) 1) Lid & container Sealing joint not ok
2) Grade of PPCP Material is not proper
3) Mishandling
4) Acid level is not maintained
5) Vent Plug design is not proper
(Causes: -) 1) PAM/NAM Softening
2) Hard Sulfation formed during plate making process
3) Positive / Negative paste Degradation
4) Improper Charging Inputs
5) Week intercell wielding
(Causes: -) 1) Lead alloy composition not ok.
2) Melting pot dross cleaning not maintained
3) Pencilling in grid mould not done properly
4) Mould Improper cleaning
5) Mould heating is not proper
6) Cork Spray Quality
7) Operator Skill
(Causes: -) 1) Lead alloy composition not ok.
2) Improper Cork spray
3) Improper Mould Temperature
4) Improper Molten Lead alloy temperature
5) Improper cleaning of Mould air vent Bar
6) Mould Surface venting is not proper
7) Mould open/ close system is not proper
8) Improper Lead pouring from Laddle
(Causes: -) 1) Curing reaction not properly done
2) Paste to grid bonding not done
3) Curing program not ok
4) Paste moisture was not maintained
5) Free Lead conversion is not proper
(Causes) 1) Centralising of Spine inside the Bag
2) Flash in spine.
3) Moisture in Oxide
4) Heavy particles like lumps, are formed during mixing.
5) Improper vibration of Oxide Filling Machine
(Causes) 1) Design and dimension of Bottom bar is not correct
2) There is no 2 nd time use of Bottom bar and spine
3) Spine cutting length not proper.
4) Wrong design of Oxide Filling Machine
5) Due to operator skill